Commit Graph

2570 Commits

Author SHA1 Message Date
Johan Hovold f0e4cba253 USB: option: reduce interrupt-urb logging verbosity
Do not log normal interrupt-urb shutdowns as errors.

The option driver has always been logging any nonzero interrupt-urb
status as an error, including when the urb is killed during normal
operation.

Commit 9096f1fbba ("USB: usb_wwan: fix potential NULL-deref at
resume") moved the interrupt urb submission from port probe and release
to open and close, thus potentially increasing the number of these
false-positive error messages dramatically.

Reported-by: Ed Butler <ressy66@ausics.net>
Tested-by: Ed Butler <ressy66@ausics.net>
Cc: <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
2014-08-18 11:05:37 +02:00
Patrick Riphagen 4bdcde358b USB: serial: ftdi_sio: Add support for new Xsens devices
This adds support for new Xsens devices, using Xsens' own Vendor ID.

Signed-off-by: Patrick Riphagen <patrick.riphagen@xsens.com>
Signed-off-by: Frans Klaver <frans.klaver@xsens.com>
Cc: Johan Hovold <johan@kernel.org>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-08-01 15:47:05 -07:00
Patrick Riphagen 9273b8a270 USB: serial: ftdi_sio: Annotate the current Xsens PID assignments
The converters are used in specific products. It can be useful to know
which they are exactly.

Signed-off-by: Patrick Riphagen <patrick.riphagen@xsens.com>
Signed-off-by: Frans Klaver <frans.klaver@xsens.com>
Cc: Johan Hovold <johan@kernel.org>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-08-01 15:47:05 -07:00
Preston Fick 934ef5aca9 USB: serial: cp210x: Removing unncessary `usb_reset_device` on startup
This `usb_reset_device` command has been around since the driver was
originally reverse engineered. It doesn't cause much issue on single
interface CP210x devices, but on the CP2105 and CP2108 with 2 and 4
interfaces respectively it will cause instability on enumeration and
delays enumeration noticably. There should be no reason to reset a device
at startup, per the CP210x AN571 spec.

Signed-off-by: Preston Fick <preston.fick@silabs.com>
Cc: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-07-17 17:12:13 -07:00
Greg Kroah-Hartman 46865bf3d6 USB-serial updates for v3.17-rc1
Here are some minor fixes and clean-ups to the ftdi_sio, mos7840 and kl5kusb105
 drivers for v3.17-rc1.
 
 Signed-off-by: Johan Hovold <johan@kernel.org>
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Merge tag 'usb-serial-3.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial into usb-next

Johan writes:

USB-serial updates for v3.17-rc1

Here are some minor fixes and clean-ups to the ftdi_sio, mos7840 and kl5kusb105
drivers for v3.17-rc1.

Signed-off-by: Johan Hovold <johan@kernel.org>
2014-07-16 09:19:26 -07:00
Greg Kroah-Hartman 85bf20d18a Merge 3.16-rc5 into usb-next
We want those fixes in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-07-13 15:54:09 -07:00
Michal Sojka d8279a40e5 USB: serial: ftdi_sio: Add Infineon Triboard
This adds support for Infineon TriBoard TC1798 [1]. Only interface 1
is used as serial line (see [2], Figure 8-6).

[1] http://www.infineon.com/cms/de/product/microcontroller/development-tools-software-and-kits/tricore-tm-development-tools-software-and-kits/starterkits-and-evaluation-boards/starter-kit-tc1798/channel.html?channel=db3a304333b8a7ca0133cfa3d73e4268
[2] http://www.infineon.com/dgdl/TriBoardManual-TC1798-V10.pdf?folderId=db3a304412b407950112b409ae7c0343&fileId=db3a304333b8a7ca0133cfae99fe426a

Signed-off-by: Michal Sojka <sojkam1@fel.cvut.cz>
Cc: Johan Hovold <johan@kernel.org>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-07-11 18:22:38 -07:00
Bert Vermeulen 5a7fbe7e9e USB: ftdi_sio: Add extra PID.
This patch adds PID 0x0003 to the VID 0x128d (Testo). At least the
Testo 435-4 uses this, likely other gear as well.

Signed-off-by: Bert Vermeulen <bert@biot.com>
Cc: Johan Hovold <johan@kernel.org>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-07-09 16:27:40 -07:00
Fabian Frederick 91c72df1fc drivers/usb/serial/mos7840.c: remove unnecessary null test before kfree
Cc: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-07-09 16:25:22 -07:00
Peter Senna Tschudin f4f8ae0568 USB: kl5kusb105: Remove klsi_105_tiocmset function
This patch remove the function klsi_105_tiocmset which was only
returning -EINVAL. It also removes the function prototype and
the .tiocmset entry in the struct usb_serial_driver.

Verified by compilation only.

Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-07-09 15:44:06 -07:00
Peter Senna Tschudin 5bc9e5933a USB: kl5kusb105: Remove klsi_105_tiocmset function
This patch remove the function klsi_105_tiocmset which was only
returning -EINVAL. It also removes the function prototype and
the .tiocmset entry in the struct usb_serial_driver.

Verified by compilation only.

Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
2014-07-07 10:49:28 +02:00
Bernd Wachter 3d28bd840b usb: option: Add ID for Telewell TW-LTE 4G v2
Add ID of the Telewell 4G v2 hardware to option driver to get legacy
serial interface working

Signed-off-by: Bernd Wachter <bernd.wachter@jolla.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
2014-07-07 10:31:14 +02:00
Andras Kovacs b9326057a3 USB: cp210x: add support for Corsair usb dongle
Corsair USB Dongles are shipped with Corsair AXi series PSUs.
These are cp210x serial usb devices, so make driver detect these.
I have a program, that can get information from these PSUs.

Tested with 2 different dongles shipped with Corsair AX860i and
AX1200i units.

Signed-off-by: Andras Kovacs <andras@sth.sze.hu>
Cc: <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
2014-07-07 10:28:18 +02:00
Fabian Frederick cca16d6242 USB: mos7840: remove unnecessary null test before kfree
Cc: Johan Hovold <jhovold@gmail.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: linux-usb@vger.kernel.org
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Johan Hovold <johan@kernel.org>
2014-07-07 10:19:29 +02:00
Johan Hovold 19de427812 USB: ftdi_sio: remove redundant mtxorb quirk
Remove redundant mtxorb quirk used to fix up incorrect wMaxPacketSize,
which was added before 895f28badc ("USB: ftdi_sio: fix hi-speed device
packet size calculation") which does the same thing for all devices.

Signed-off-by: Johan Hovold <johan@kernel.org>
2014-07-07 10:10:35 +02:00
Johan Hovold 47e575952b USB: ftdi_sio: clean up ftdi_set_max_packet_size()
Code and comment style clean ups of ftdi_set_max_packet_size().

Signed-off-by: Johan Hovold <johan@kernel.org>
2014-07-07 10:10:34 +02:00
Johan Hovold a90d84adb4 USB: ftdi_sio: fix max-packet-size warning
Promote max-packet-size-override message to warning level and use the
port device for logging, while using actual endpoint numbers in the
message itself.

Signed-off-by: Johan Hovold <johan@kernel.org>
2014-07-07 10:10:33 +02:00
Johan Hovold af6f9e8355 USB: ftdi_sio: make port probe less verbose
There's no need to print the number of endpoints per interface or
endpoint wMaxPacketSize during port probe. This information is readily
available using lsusb should it ever be needed.

Note that this also fixes the wMaxPacketSize being incorrectly reported
on big-endian systems due to a missing le16_to_cpu().

Signed-off-by: Johan Hovold <johan@kernel.org>
2014-07-07 10:10:32 +02:00
Bjørn Mork b0ebef36e9 usb: option: add/modify Olivetti Olicard modems
Adding a couple of Olivetti modems and blacklisting the net
function on a couple which are already supported.

Reported-by: Lars Melin <larsm17@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Johan Hovold <johan@kernel.org>
2014-06-23 12:27:42 +02:00
Johan Hovold aea1ae8760 USB: ftdi_sio: fix null deref at port probe
Fix NULL-pointer dereference when probing an interface with no
endpoints.

These devices have two bulk endpoints per interface, but this avoids
crashing the kernel if a user forces a non-FTDI device to be probed.

Note that the iterator variable was made unsigned in order to avoid
a maybe-uninitialized compiler warning for ep_desc after the loop.

Fixes: 895f28badc ("USB: ftdi_sio: fix hi-speed device packet size
calculation")

Reported-by: Mike Remski <mremski@mutualink.net>
Tested-by: Mike Remski <mremski@mutualink.net>
Cc: <stable@vger.kernel.org>	# 2.6.31
Signed-off-by: Johan Hovold <johan@kernel.org>
2014-06-23 12:27:41 +02:00
Oliver Neukum 1cab4c68e3 USB: option: add device ID for SpeedUp SU9800 usb 3g modem
Reported by Alif Mubarak Ahmad:

This device vendor and product id is 1c9e:9800
It is working as serial interface with generic usbserial driver.
I thought it is more suitable to use usbserial option driver, which has
better capability distinguishing between modem serial interface and
micro sd storage interface.

[ johan: style changes ]

Signed-off-by: Oliver Neukum <oneukum@suse.de>
Tested-by: Alif Mubarak Ahmad <alive4ever@live.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
2014-06-23 12:24:53 +02:00
Linus Torvalds 3f17ea6dea Merge branch 'next' (accumulated 3.16 merge window patches) into master
Now that 3.15 is released, this merges the 'next' branch into 'master',
bringing us to the normal situation where my 'master' branch is the
merge window.

* accumulated work in next: (6809 commits)
  ufs: sb mutex merge + mutex_destroy
  powerpc: update comments for generic idle conversion
  cris: update comments for generic idle conversion
  idle: remove cpu_idle() forward declarations
  nbd: zero from and len fields in NBD_CMD_DISCONNECT.
  mm: convert some level-less printks to pr_*
  MAINTAINERS: adi-buildroot-devel is moderated
  MAINTAINERS: add linux-api for review of API/ABI changes
  mm/kmemleak-test.c: use pr_fmt for logging
  fs/dlm/debug_fs.c: replace seq_printf by seq_puts
  fs/dlm/lockspace.c: convert simple_str to kstr
  fs/dlm/config.c: convert simple_str to kstr
  mm: mark remap_file_pages() syscall as deprecated
  mm: memcontrol: remove unnecessary memcg argument from soft limit functions
  mm: memcontrol: clean up memcg zoneinfo lookup
  mm/memblock.c: call kmemleak directly from memblock_(alloc|free)
  mm/mempool.c: update the kmemleak stack trace for mempool allocations
  lib/radix-tree.c: update the kmemleak stack trace for radix tree allocations
  mm: introduce kmemleak_update_trace()
  mm/kmemleak.c: use %u to print ->checksum
  ...
2014-06-08 11:31:16 -07:00
Linus Torvalds 776edb5931 Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into next
Pull core locking updates from Ingo Molnar:
 "The main changes in this cycle were:

   - reduced/streamlined smp_mb__*() interface that allows more usecases
     and makes the existing ones less buggy, especially in rarer
     architectures

   - add rwsem implementation comments

   - bump up lockdep limits"

* 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (33 commits)
  rwsem: Add comments to explain the meaning of the rwsem's count field
  lockdep: Increase static allocations
  arch: Mass conversion of smp_mb__*()
  arch,doc: Convert smp_mb__*()
  arch,xtensa: Convert smp_mb__*()
  arch,x86: Convert smp_mb__*()
  arch,tile: Convert smp_mb__*()
  arch,sparc: Convert smp_mb__*()
  arch,sh: Convert smp_mb__*()
  arch,score: Convert smp_mb__*()
  arch,s390: Convert smp_mb__*()
  arch,powerpc: Convert smp_mb__*()
  arch,parisc: Convert smp_mb__*()
  arch,openrisc: Convert smp_mb__*()
  arch,mn10300: Convert smp_mb__*()
  arch,mips: Convert smp_mb__*()
  arch,metag: Convert smp_mb__*()
  arch,m68k: Convert smp_mb__*()
  arch,m32r: Convert smp_mb__*()
  arch,ia64: Convert smp_mb__*()
  ...
2014-06-03 12:57:53 -07:00
Aleksander Morgado 0ce5fb5856 usb: qcserial: add additional Sierra Wireless QMI devices
A set of new VID/PIDs retrieved from the out-of-tree GobiNet/GobiSerial
Sierra Wireless drivers.

Signed-off-by: Aleksander Morgado <aleksander@aleksander.es>
Link: http://marc.info/?l=linux-usb&m=140136310027293&w=2
Cc: <stable@vger.kernel.org>	# backport in link above
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-29 11:20:26 -07:00
Aleksander Morgado ff1fcd50bc usb: qcserial: add Netgear AirCard 341U
Signed-off-by: Aleksander Morgado <aleksander@aleksander.es>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-28 14:56:36 -07:00
Rickard Strandqvist d5afce82e1 USB: keyspan: fix potential null pointer dereference
Move control-urb dereference to after NULL-check. There is otherwise a
risk of a possible null pointer dereference.

Was largely found by using a static code analysis program called
cppcheck.

[Johan: modify commit message somewhat ]
[gkh: remove stable tag as it's not a real problem that anyone has ever hit]

Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-27 15:14:13 -07:00
Alexej Starschenko 8a61ba3a47 USB: serial: option: add support for Novatel E371 PCIe card
Adds product ID for the Novatel E371 PCI Express Mini Card.

$ lsusb
Bus 001 Device 024: ID 1410:9011 Novatel Wireless

$ usb-devices
T:  Bus=01 Lev=01 Prnt=01 Port=03 Cnt=01 Dev#= 24 Spd=480 MxCh= 0
D:  Ver= 2.00 Cls=ef(misc ) Sub=02 Prot=01 MxPS=64 #Cfgs=  1
P:  Vendor=1410 ProdID=9011 Rev=00.03
S:  Manufacturer=Novatel Wireless, Inc.
S:  Product=Novatel Wireless HSPA
S:  SerialNumber=012773002115811
C:  #Ifs= 6 Cfg#= 1 Atr=e0 MxPwr=500mA
I:  If#= 0 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=option
I:  If#= 1 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=option
I:  If#= 2 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=option
I:  If#= 3 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=option
I:  If#= 6 Alt= 0 #EPs= 1 Cls=02(commc) Sub=06 Prot=00 Driver=cdc_ether
I:  If#= 7 Alt= 1 #EPs= 2 Cls=0a(data ) Sub=00 Prot=00 Driver=cdc_ether

Tested with kernel 3.2.0.

Signed-off-by: Alexej Starschenko <starschenko@gmail.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-27 15:12:57 -07:00
George McCollister d0839d757e USB: ftdi_sio: add NovaTech OrionLXm product ID
The NovaTech OrionLXm uses an onboard FTDI serial converter for JTAG and
console access.

Here is the lsusb output:
Bus 004 Device 123: ID 0403:7c90 Future Technology Devices
International, Ltd

Signed-off-by: George McCollister <george.mccollister@gmail.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-27 15:12:57 -07:00
Johan Hovold c03890ff5e USB: io_ti: fix firmware download on big-endian machines (part 2)
A recent patch that purported to fix firmware download on big-endian
machines failed to add the corresponding sparse annotation to the
i2c-header. This was reported by the kbuild test robot.

Adding the appropriate annotation revealed another endianess bug related
to the i2c-header Size-field in a code path that is exercised when the
firmware is actually being downloaded (and not just verified and left
untouched unless older than the firmware at hand).

This patch adds the required sparse annotation to the i2c-header and
makes sure that the Size-field is sent in little-endian byte order
during firmware download also on big-endian machines.

Note that this patch is only compile-tested, but that there is no
functional change for little-endian systems.

Reported-by: kbuild test robot <fengguang.wu@intel.com>
Cc: Ludovic Drolez <ldrolez@debian.org>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-27 15:12:57 -07:00
Johan Hovold 90419cfcb5 USB: kobil_sct: fix control requests without data stage
Fix incorrect pipe directions and remove bogus data buffer arguments
from control requests without data stage.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-27 15:04:08 -07:00
Johan Hovold 3fff3b4343 USB: serial: remove overly defensive port tests
The only way a port pointer may be NULL is if probe() failed, and in
that case neither disconnect(), resume(), or reset_resume() will be
called.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-27 15:04:08 -07:00
Johan Hovold c14829fad8 USB: serial: fix potential runtime pm imbalance at device remove
Only call usb_autopm_put_interface() if the corresponding
usb_autopm_get_interface() was successful.

This prevents a potential runtime PM counter imbalance should
usb_autopm_get_interface() fail. Note that the USB PM usage counter is
reset when the interface is unbound, but that the runtime PM counter may
be left unbalanced.

Also add comment on why we don't need to worry about racing
resume/suspend on autopm_get failures.

Fixes: d5fd650cfc ("usb: serial: prevent suspend/resume from racing
against probe/remove")

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-27 15:04:08 -07:00
Johan Hovold b0a9aa6da8 USB: usb_wwan: do not resume I/O on closing ports
Use tty-port initialised flag rather than private flag to determine when
port is closing down.

Since the tty-port flag is set prior to dropping DTR/RTS (when HUPCL is
set) this avoid submitting the read urbs when resuming the interface in
dtr_rts() only to immediately kill them again in shutdown().

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-27 15:04:08 -07:00
Johan Hovold 8bb7ec65d6 USB: usb_wwan: report failed submissions as errors
Promote failed-submission messages in open() and write() to error log
level.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-27 15:04:08 -07:00
Johan Hovold 89da4a49b9 USB: usb_wwan: remove bogus function prototype
The usb_wwan_send_setup() function has never existed.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-27 15:04:08 -07:00
Johan Hovold 7d5dddda08 USB: usb_wwan: remove some superfluous comments
Remove some more outdated or superfluous comments.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-27 15:04:08 -07:00
Johan Hovold 9fdf7063ec USB: usb_wwan: remove comment from close
Remove superfluous and cryptic comment from close.

It should be obvious that we're balancing the autopm_put in open (and
that operation already mentions the autopm_get done in the USB serial
core).

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-27 15:04:08 -07:00
Johan Hovold 3362c91c78 USB: usb_wwan: clean up delayed-urb submission
Clean up and rename delay-urb submission function using a more
descriptive name.

Also add comment on locking assumptions.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-27 15:04:07 -07:00
Johan Hovold 37357ca5a4 USB: usb_wwan: use interface-data accessors
Use usb_get_serial_data() rather than accessing the private pointer
directly.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-27 15:04:07 -07:00
Johan Hovold b0f9d0030d USB: usb_wwan: make resume error messages uniform
Make resume error messages uniform.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-27 15:04:07 -07:00
Johan Hovold ae75c94018 USB: usb_wwan: kill interrupt urb explicitly at suspend
As the port interrupt URB is submitted by the subdriver at open, we
should also kill it explicitly at suspend (even though this will be
taken care of by USB serial core otherwise).

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-27 15:04:07 -07:00
Johan Hovold 2b4aceabb1 USB: usb_wwan: remove redundant urb kill from port remove
Remove redundant usb_kill_urb from port remove, which is called
post-shutdown (close).

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-27 15:04:07 -07:00
Johan Hovold a427c179de USB: usb_wwan: remove unimplemented set_termios
The driver does not implement set_termios so the operation can be left
unset (tty will do the tty_termios_copy_hw for us).

Note that the send_setup call is bogus as it really only sets DTR/RTS
to their current values.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-27 15:04:07 -07:00
Johan Hovold 02803542b7 USB: usb_wwan: remove redundant modem-control request
The tty-port implementation has already made sure that DTR/RTS have been
raised by calling dtr_rts so remove the redundant call from open.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-27 15:04:06 -07:00
Johan Hovold c1c0180340 USB: usb_wwan: fix remote wakeup
Make sure that needs_remote_wake up is always set when there are open
ports.

Currently close() would unconditionally set needs_remote_wakeup to 0
even though there might still be open ports. This could lead to blocked
input and possibly dropped data on devices that do not support remote
wakeup (and which must therefore not be runtime suspended while open).

Add an open_ports counter (protected by the susp_lock) and only clear
needs_remote_wakeup when the last port is closed.

Note that there are currently no multi-port drivers using the usb_wwan
implementation.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-27 15:04:06 -07:00
Johan Hovold 7436f41283 USB: usb_wwan: fix discarded writes on resume errors
There's no reason not to try sending off any further delayed write urbs,
should one urb-submission fail.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-27 15:04:06 -07:00
Johan Hovold fb7ad4f93d USB: usb_wwan: fix potential blocked I/O after resume
Keep trying to submit urbs rather than bail out on first read-urb
submission error, which would also prevent I/O for any further ports
from being resumed.

Instead keep an error count, for all types of failed submissions, and
let USB core know that something went wrong.

Also make sure to always clear the suspended flag. Currently a failed
read-urb submission would prevent cached writes as well as any
subsequent writes from being submitted until next suspend-resume cycle,
something which may not even necessarily happen.

Note that USB core currently only logs an error if an interface resume
failed.

Fixes: 383cedc3bb ("USB: serial: full autosuspend support for the
option driver")

Cc: <stable@vger.kernel.org>	# v2.6.32
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-27 15:04:06 -07:00
Johan Hovold 9096f1fbba USB: usb_wwan: fix potential NULL-deref at resume
The interrupt urb was submitted unconditionally at resume, something
which could lead to a NULL-pointer dereference in the urb completion
handler as resume may be called after the port and port data is gone.

Fix this by making sure the interrupt urb is only submitted and active
when the port is open.

Fixes: 383cedc3bb ("USB: serial: full autosuspend support for the
option driver")

Cc: <stable@vger.kernel.org>  # v2.6.32: 032129cb03
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-27 15:04:06 -07:00
Johan Hovold 79eed03e77 USB: usb_wwan: fix urb leak at shutdown
The delayed-write queue was never emptied at shutdown (close), something
which could lead to leaked urbs if the port is closed before being
runtime resumed due to a write.

When this happens the output buffer would not drain on close
(closing_wait timeout), and after consecutive opens, writes could be
corrupted with previously buffered data, transfered with reduced
throughput or completely blocked.

Note that unbusy_queued_urb() was simply moved out of CONFIG_PM.

Fixes: 383cedc3bb ("USB: serial: full autosuspend support for the
option driver")

Cc: <stable@vger.kernel.org>	# v2.6.32
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-27 15:04:06 -07:00
Johan Hovold 170fad9e22 USB: usb_wwan: fix write and suspend race
Fix race between write() and suspend() which could lead to writes being
dropped (or I/O while suspended) if the device is runtime suspended
while a write request is being processed.

Specifically, suspend() releases the susp_lock after determining the
device is idle but before setting the suspended flag, thus leaving a
window where a concurrent write() can submit an urb.

Fixes: 383cedc3bb ("USB: serial: full autosuspend support for the
option driver")

Cc: <stable@vger.kernel.org>	# v2.6.32
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-27 15:04:05 -07:00
xiao jin d9e93c08d8 USB: usb_wwan: fix race between write and resume
We find a race between write and resume. usb_wwan_resume run play_delayed()
and spin_unlock, but intfdata->suspended still is not set to zero.
At this time usb_wwan_write is called and anchor the urb to delay
list. Then resume keep running but the delayed urb have no chance
to be commit until next resume. If the time of next resume is far
away, tty will be blocked in tty_wait_until_sent during time. The
race also can lead to writes being reordered.

This patch put play_Delayed and intfdata->suspended together in the
spinlock, it's to avoid the write race during resume.

Fixes: 383cedc3bb ("USB: serial: full autosuspend support for the
option driver")

Signed-off-by: xiao jin <jin.xiao@intel.com>
Signed-off-by: Zhang, Qi1 <qi1.zhang@intel.com>
Reviewed-by: David Cohen <david.a.cohen@linux.intel.com>
Cc: <stable@vger.kernel.org>	# v2.6.32
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-27 15:04:05 -07:00
xiao jin db09047379 USB: usb_wwan: fix urb leak in write error path
When enable usb serial for modem data, sometimes the tty is blocked
in tty_wait_until_sent because portdata->out_busy always is set and
have no chance to be cleared.

We find a bug in write error path. usb_wwan_write set portdata->out_busy
firstly, then try autopm async with error. No out urb submit and no
usb_wwan_outdat_callback to this write, portdata->out_busy can't be
cleared.

This patch clear portdata->out_busy if usb_wwan_write try autopm async
with error.

Fixes: 383cedc3bb ("USB: serial: full autosuspend support for the
option driver")

Signed-off-by: xiao jin <jin.xiao@intel.com>
Signed-off-by: Zhang, Qi1 <qi1.zhang@intel.com>
Reviewed-by: David Cohen <david.a.cohen@linux.intel.com>
Cc: <stable@vger.kernel.org>	# v2.6.32
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-27 15:04:05 -07:00
Johan Hovold 496969c64a USB: option: add missing usb_mark_last_busy
We should call usb_mark_last_busy in all input paths, including the
interrupt completion handler.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-27 15:04:05 -07:00
Johan Hovold dd246f2c8c USB: option: fix line-control pipe direction
The option line-control request has been using the wrong pipe direction,
while relying on USB core to fix it up.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-27 15:04:05 -07:00
Johan Hovold acf47d4f9c USB: option: fix runtime PM handling
Fix potential I/O while runtime suspended due to missing PM operations
in send_setup.

Fixes: 383cedc3bb ("USB: serial: full autosuspend support for the
option driver")

Cc: <stable@vger.kernel.org>        # v2.6.32
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-27 15:04:05 -07:00
Johan Hovold c2e45d7047 USB: sierra: do not resume I/O on closing ports
Use tty-port initialised flag rather than private flag to determine when
port is closing down.

Since the tty-port flag is set prior to dropping DTR/RTS (when HUPCL is
set) this avoid submitting the read urbs when resuming the interface in
dtr_rts() only to immediately kill them again in shutdown().

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-27 15:04:05 -07:00
Johan Hovold 0287d5c5cd USB: sierra: minimise no-suspend window during close
Move usb_autopm_get_interface_no_resume to the end of close(). This
makes the window during which suspend is prevented before the final put
in USB serial core slightly smaller.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-27 15:04:05 -07:00
Johan Hovold 71c149b901 USB: sierra: refactor delayed-urb submission
Refactor and clean up delayed-urb submission at resume.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-27 15:04:05 -07:00
Johan Hovold 7d8825bed4 USB: sierra: clean up suspend
Clean up suspend() somewhat and make sure to always set the suspended
flag (although it's only used for runtime PM) in order to match
resume().

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-27 15:04:04 -07:00
Johan Hovold 7c80782ebf USB: sierra: use interface-data accessors
Use usb_get_serial_data() rather than accessing the private pointer
directly.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-27 15:04:04 -07:00
Johan Hovold 7cdc3355a7 USB: sierra: remove redundant modem-control requests
The tty-port implementation has already made sure that DTR/RTS have been
raised and lowered by calling dtr_rts so remove the redundant calls from
open and close.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-27 15:04:04 -07:00
Johan Hovold a283d080a4 USB: sierra: do not resume I/O on closed ports
Do not resume any I/O, including the delayed write queue, on closed
ports.

Note that this currently has no functional impact due to the
usb_autopm_get_interface() in close(), but that call is about to be
removed by a follow-up patch.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-27 15:04:04 -07:00
Johan Hovold 40d88983ce USB: sierra: remove disconnected test from close
Remove no longer needed disconnected test from close, which is never
called post disconnect (and drivers must handle failed I/O during
disconnect anyway).

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-27 15:04:04 -07:00
Johan Hovold e825aaa062 USB: sierra: remove unimplemented set_termios
The driver does not implement set_termios so the operation can be left
unset (tty will do the tty_termios_copy_hw for us).

Note that the send_setup call is bogus as it really only sets DTR/RTS
to their current values.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-27 15:04:04 -07:00
Johan Hovold bc03cfe84d USB: sierra: remove unused variable
Remove unused variable from sierra_release_urb.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-27 15:04:04 -07:00
Johan Hovold 21aa1c41db USB: sierra: remove bogus endpoint test
Remove bogus endpoint-address test which is never true.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-27 15:04:04 -07:00
Johan Hovold d304889888 USB: sierra: fix line-control pipe direction
The sierra line-control request has been using the wrong pipe direction,
while relying on USB core to fix it up.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-27 15:04:03 -07:00
Johan Hovold f4a2d499e7 USB: sierra: fix resume error reporting
Add error message to resume error path and make sure to also return an
error when failing to submit a cached write.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-27 15:04:03 -07:00
Johan Hovold c9d838a898 USB: sierra: fix urbs not being killed on shutdown
Make sure to stop all I/O, including any active write urbs, at shutdown.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-27 15:04:03 -07:00
Johan Hovold 93670599fc USB: sierra: fix characters being dropped at close
Fix characters potentially being dropped at close due to missing
chars_in_buffer implementation.

Note that currently the write urbs are not even killed at close (will be
fixed separately), but this could still lead to dropped data since we
have lowered DTR/RTS.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-27 15:04:03 -07:00
Johan Hovold 80cc0fcbda USB: sierra: fix remote wakeup
Make sure that needs_remote_wake up is always set when there are open
ports.

Currently close() would unconditionally set needs_remote_wakeup to 0
even though there might still be open ports. This could lead to blocked
input and possibly dropped data on devices that do not support remote
wakeup (and which must therefore not be runtime suspended while open).

Add an open_ports counter (protected by the susp_lock) and only clear
needs_remote_wakeup when the last port is closed.

Fixes: e6929a9020 ("USB: support for autosuspend in sierra while
online")

Cc: <stable@vger.kernel.org>	# v2.6.32
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-27 15:04:03 -07:00
Johan Hovold 014333f77c USB: sierra: fix urb and memory leak on disconnect
The delayed-write queue was never emptied on disconnect, something which
would lead to leaked urbs and transfer buffers if the device is
disconnected before being runtime resumed due to a write.

Fixes: e6929a9020 ("USB: support for autosuspend in sierra while
online")

Cc: <stable@vger.kernel.org>	# v2.6.32
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-27 15:04:02 -07:00
Johan Hovold 7fdd26a01e USB: sierra: fix urb and memory leak in resume error path
Neither the transfer buffer or the urb itself were released in the
resume error path for delayed writes. Also on errors, the remainder of
the queue was not even processed, which leads to further urb and buffer
leaks.

The same error path also failed to balance the outstanding-urb counter,
something which results in degraded throughput or completely blocked
writes.

Fix this by releasing urb and buffer and balancing counters on errors,
and by always processing the whole queue even when submission of one urb
fails.

Fixes: e6929a9020 ("USB: support for autosuspend in sierra while
online")

Cc: <stable@vger.kernel.org>	# v2.6.32
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-27 15:04:02 -07:00
Johan Hovold 8452727de7 USB: sierra: fix use after free at suspend/resume
Fix use after free or NULL-pointer dereference during suspend and
resume.

The port data may never have been allocated (port probe failed)
or may already have been released by port_remove (e.g. driver is
unloaded) when suspend and resume are called.

Fixes: e6929a9020 ("USB: support for autosuspend in sierra while
online")

Cc: <stable@vger.kernel.org>	# v2.6.32
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-27 15:04:02 -07:00
Johan Hovold 353fe19860 USB: sierra: fix AA deadlock in open error path
Fix AA deadlock in open error path that would call close() and try to
grab the already held disc_mutex.

Fixes: b9a44bc19f ("sierra: driver urb handling improvements")

Cc: <stable@vger.kernel.org>	# v2.6.31
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-27 15:04:02 -07:00
Bjørn Mork 48292d8b07 usb: qcserial: remove interface number matching
Matching on interface numbers was not such a good idea
for multi-function serial devices after all. It is much
better do create well defined device layouts, allowing
a single match entry per device.

Remove this now unused code.

Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-27 14:59:24 -07:00
Bjørn Mork 8bc7a06940 usb: qcserial: define and use Sierra Wireless layout
All the "non Gobi" Qualcomm based devices handled by this
driver share a common standard Sierra Wireless specific
layout. Adding code specifically for this layout allow
us to reduce the number of match entries per device from
three to one.

This change will result in a penalty wrt stable backports,
but simplifies new Sierra device addtitions in the long
term.

Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-27 14:59:24 -07:00
Bjørn Mork d712ca91db usb: qcserial: refactor device layout selection
Preparing for more supported standard device layouts. Keeping
the matching macros unchanged to avoid breaking stable
backporting of new device additions.

Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-27 14:59:24 -07:00
Bjørn Mork ce1b066136 usb: qcserial: fix multiline comment coding style
Use a consistent style for all multiline comments.

Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-27 14:59:23 -07:00
Bjørn Mork 4d7c0136a5 usb: qcserial: add a number of Dell devices
Dan writes:

"The Dell drivers use the same configuration for PIDs:

81A2: Dell Wireless 5806 Gobi(TM) 4G LTE Mobile Broadband Card
81A3: Dell Wireless 5570 HSPA+ (42Mbps) Mobile Broadband Card
81A4: Dell Wireless 5570e HSPA+ (42Mbps) Mobile Broadband Card
81A8: Dell Wireless 5808 Gobi(TM) 4G LTE Mobile Broadband Card
81A9: Dell Wireless 5808e Gobi(TM) 4G LTE Mobile Broadband Card

These devices are all clearly Sierra devices, but are also definitely
Gobi-based.  The A8 might be the MC7700/7710 and A9 is likely a MC7750.

>From DellGobi5kSetup.exe from the Dell drivers:

usbif0: serial/firmware loader?
usbif2: nmea
usbif3: modem/ppp
usbif8: net/QMI"

Cc: <stable@vger.kernel.org>
Reported-by: AceLan Kao <acelan.kao@canonical.com>
Reported-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-03 18:04:28 -04:00
Bjørn Mork 34f972d615 usb: option: add and update a number of CMOTech devices
A number of older CMOTech modems are based on Qualcomm
chips.  The blacklisted interfaces are QMI/wwan.

Reported-by: Lars Melin <larsm17@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-04-25 11:35:04 -07:00
Bjørn Mork dd6b48ecec usb: option: add Alcatel L800MA
Device interface layout:
0: ff/ff/ff - serial
1: ff/00/00 - serial AT+PPP
2: ff/ff/ff - QMI/wwan
3: 08/06/50 - storage

Cc: <stable@vger.kernel.org>
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-04-25 11:35:04 -07:00
Bjørn Mork 533b399461 usb: option: add Olivetti Olicard 500
Device interface layout:
0: ff/ff/ff - serial
1: ff/ff/ff - serial AT+PPP
2: 08/06/50 - storage
3: ff/ff/ff - serial
4: ff/ff/ff - QMI/wwan

Cc: <stable@vger.kernel.org>
Reported-by: Julio Araujo <julio.araujo@wllctel.com.br>
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-04-25 11:35:04 -07:00
Bjørn Mork bce4f588f1 usb: qcserial: add Sierra Wireless MC7305/MC7355
Cc: <stable@vger.kernel.org>
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-04-25 11:35:04 -07:00
Bjørn Mork 70a3615fc0 usb: qcserial: add Sierra Wireless MC73xx
Cc: <stable@vger.kernel.org>
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-04-25 11:35:04 -07:00
Bjørn Mork a00986f811 usb: qcserial: add Sierra Wireless EM7355
Cc: <stable@vger.kernel.org>
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-04-25 11:35:04 -07:00
Johan Hovold 5509076d1b USB: io_ti: fix firmware download on big-endian machines
During firmware download the device expects memory addresses in
big-endian byte order. As the wIndex parameter which hold the address is
sent in little-endian byte order regardless of host byte order, we need
to use swab16 rather than cpu_to_be16.

Also make sure to handle the struct ti_i2c_desc size parameter which is
returned in little-endian byte order.

Reported-by: Ludovic Drolez <ldrolez@debian.org>
Tested-by: Ludovic Drolez <ldrolez@debian.org>
Cc: stable@vger.kernel.org
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-04-25 09:34:10 -07:00
Johan Hovold 10164c2ad6 USB: serial: fix sysfs-attribute removal deadlock
Fix driver new_id sysfs-attribute removal deadlock by making sure to
not hold any locks that the attribute operations grab when removing the
attribute.

Specifically, usb_serial_deregister holds the table mutex when
deregistering the driver, which includes removing the new_id attribute.
This can lead to a deadlock as writing to new_id increments the
attribute's active count before trying to grab the same mutex in
usb_serial_probe.

The deadlock can easily be triggered by inserting a sleep in
usb_serial_deregister and writing the id of an unbound device to new_id
during module unload.

As the table mutex (in this case) is used to prevent subdriver unload
during probe, it should be sufficient to only hold the lock while
manipulating the usb-serial driver list during deregister. A racing
probe will then either fail to find a matching subdriver or fail to get
the corresponding module reference.

Since v3.15-rc1 this also triggers the following lockdep warning:

======================================================
[ INFO: possible circular locking dependency detected ]
3.15.0-rc2 #123 Tainted: G        W
-------------------------------------------------------
modprobe/190 is trying to acquire lock:
 (s_active#4){++++.+}, at: [<c0167aa0>] kernfs_remove_by_name_ns+0x4c/0x94

but task is already holding lock:
 (table_lock){+.+.+.}, at: [<bf004d84>] usb_serial_deregister+0x3c/0x78 [usbserial]

which lock already depends on the new lock.

the existing dependency chain (in reverse order) is:

-> #1 (table_lock){+.+.+.}:
       [<c0075f84>] __lock_acquire+0x1694/0x1ce4
       [<c0076de8>] lock_acquire+0xb4/0x154
       [<c03af3cc>] _raw_spin_lock+0x4c/0x5c
       [<c02bbc24>] usb_store_new_id+0x14c/0x1ac
       [<bf007eb4>] new_id_store+0x68/0x70 [usbserial]
       [<c025f568>] drv_attr_store+0x30/0x3c
       [<c01690e0>] sysfs_kf_write+0x5c/0x60
       [<c01682c0>] kernfs_fop_write+0xd4/0x194
       [<c010881c>] vfs_write+0xbc/0x198
       [<c0108e4c>] SyS_write+0x4c/0xa0
       [<c000f880>] ret_fast_syscall+0x0/0x48

-> #0 (s_active#4){++++.+}:
       [<c03a7a28>] print_circular_bug+0x68/0x2f8
       [<c0076218>] __lock_acquire+0x1928/0x1ce4
       [<c0076de8>] lock_acquire+0xb4/0x154
       [<c0166b70>] __kernfs_remove+0x254/0x310
       [<c0167aa0>] kernfs_remove_by_name_ns+0x4c/0x94
       [<c0169fb8>] remove_files.isra.1+0x48/0x84
       [<c016a2fc>] sysfs_remove_group+0x58/0xac
       [<c016a414>] sysfs_remove_groups+0x34/0x44
       [<c02623b8>] driver_remove_groups+0x1c/0x20
       [<c0260e9c>] bus_remove_driver+0x3c/0xe4
       [<c026235c>] driver_unregister+0x38/0x58
       [<bf007fb4>] usb_serial_bus_deregister+0x84/0x88 [usbserial]
       [<bf004db4>] usb_serial_deregister+0x6c/0x78 [usbserial]
       [<bf005330>] usb_serial_deregister_drivers+0x2c/0x4c [usbserial]
       [<bf016618>] usb_serial_module_exit+0x14/0x1c [sierra]
       [<c009d6cc>] SyS_delete_module+0x184/0x210
       [<c000f880>] ret_fast_syscall+0x0/0x48

other info that might help us debug this:

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(table_lock);
                               lock(s_active#4);
                               lock(table_lock);
  lock(s_active#4);

 *** DEADLOCK ***

1 lock held by modprobe/190:
 #0:  (table_lock){+.+.+.}, at: [<bf004d84>] usb_serial_deregister+0x3c/0x78 [usbserial]

stack backtrace:
CPU: 0 PID: 190 Comm: modprobe Tainted: G        W     3.15.0-rc2 #123
[<c0015e10>] (unwind_backtrace) from [<c0013728>] (show_stack+0x20/0x24)
[<c0013728>] (show_stack) from [<c03a9a54>] (dump_stack+0x24/0x28)
[<c03a9a54>] (dump_stack) from [<c03a7cac>] (print_circular_bug+0x2ec/0x2f8)
[<c03a7cac>] (print_circular_bug) from [<c0076218>] (__lock_acquire+0x1928/0x1ce4)
[<c0076218>] (__lock_acquire) from [<c0076de8>] (lock_acquire+0xb4/0x154)
[<c0076de8>] (lock_acquire) from [<c0166b70>] (__kernfs_remove+0x254/0x310)
[<c0166b70>] (__kernfs_remove) from [<c0167aa0>] (kernfs_remove_by_name_ns+0x4c/0x94)
[<c0167aa0>] (kernfs_remove_by_name_ns) from [<c0169fb8>] (remove_files.isra.1+0x48/0x84)
[<c0169fb8>] (remove_files.isra.1) from [<c016a2fc>] (sysfs_remove_group+0x58/0xac)
[<c016a2fc>] (sysfs_remove_group) from [<c016a414>] (sysfs_remove_groups+0x34/0x44)
[<c016a414>] (sysfs_remove_groups) from [<c02623b8>] (driver_remove_groups+0x1c/0x20)
[<c02623b8>] (driver_remove_groups) from [<c0260e9c>] (bus_remove_driver+0x3c/0xe4)
[<c0260e9c>] (bus_remove_driver) from [<c026235c>] (driver_unregister+0x38/0x58)
[<c026235c>] (driver_unregister) from [<bf007fb4>] (usb_serial_bus_deregister+0x84/0x88 [usbserial])
[<bf007fb4>] (usb_serial_bus_deregister [usbserial]) from [<bf004db4>] (usb_serial_deregister+0x6c/0x78 [usbserial])
[<bf004db4>] (usb_serial_deregister [usbserial]) from [<bf005330>] (usb_serial_deregister_drivers+0x2c/0x4c [usbserial])
[<bf005330>] (usb_serial_deregister_drivers [usbserial]) from [<bf016618>] (usb_serial_module_exit+0x14/0x1c [sierra])
[<bf016618>] (usb_serial_module_exit [sierra]) from [<c009d6cc>] (SyS_delete_module+0x184/0x210)
[<c009d6cc>] (SyS_delete_module) from [<c000f880>] (ret_fast_syscall+0x0/0x48)

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-04-24 12:50:56 -07:00
Peter Zijlstra 4e857c58ef arch: Mass conversion of smp_mb__*()
Mostly scripted conversion of the smp_mb__* barriers.

Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Link: http://lkml.kernel.org/n/tip-55dhyhocezdw1dg7u19hmh1u@git.kernel.org
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: linux-arch@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-04-18 14:20:48 +02:00
Johan Hovold bd73bd8831 USB: usb_wwan: fix handling of missing bulk endpoints
Fix regression introduced by commit 8e493ca176 ("USB: usb_wwan: fix
bulk-urb allocation") by making sure to require both bulk-in and out
endpoints during port probe.

The original option driver (which usb_wwan is based on) was written
under the assumption that either endpoint could be missing, but
evidently this cannot have been tested properly. Specifically, it would
handle opening a device without bulk-in (but would blow up during resume
which was implemented later), but not a missing bulk-out in write()
(although it is handled in some places such as write_room()).

Fortunately (?), the driver also got the test for missing endpoints
wrong so the urbs were in fact always allocated, although they would be
initialised using the wrong endpoint address (0) and any submission of
such an urb would fail.

The commit mentioned above fixed the test for missing endpoints but
thereby exposed the other bugs which would now generate null-pointer
exceptions rather than failed urb submissions.

The regression was introduced in v3.7, but the offending commit was also
marked for stable.

Reported-by: Rafał Miłecki <zajec5@gmail.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Tested-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-04-16 13:56:07 -07:00
Aaron Sanders b16c02fbfb USB: pl2303: add ids for Hewlett-Packard HP POS pole displays
Add device ids to pl2303 for the Hewlett-Packard HP POS pole displays:

LD960: 03f0:0B39
LCM220: 03f0:3139
LCM960: 03f0:3239

[ Johan: fix indentation and sort PIDs numerically ]

Signed-off-by: Aaron Sanders <aaron.sanders@hp.com>
Cc: stable@vger.kernel.org
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-04-16 13:56:07 -07:00
Tristan Bruns 72b3007951 USB: cp210x: Add 8281 (Nanotec Plug & Drive)
Signed-off-by: Tristan Bruns <tristan@tristanbruns.de>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-04-16 13:56:07 -07:00
Daniele Palmas d6de486bc2 usb: option driver, add support for Telit UE910v2
option driver, added VID/PID for Telit UE910v2 modem

Signed-off-by: Daniele Palmas <dnlplm@gmail.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-04-16 13:44:59 -07:00
Johan Hovold 2e01280d28 Revert "USB: serial: add usbid for dell wwan card to sierra.c"
This reverts commit 1ebca9dad5.

This device was erroneously added to the sierra driver even though it's
not a Sierra device and was already handled by the option driver.

Cc: Richard Farina <sidhayn@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-04-16 13:44:58 -07:00
Michele Baldessari efe26e16b1 USB: serial: ftdi_sio: add id for Brainboxes serial cards
Custom VID/PIDs for Brainboxes cards as reported in
https://bugzilla.redhat.com/show_bug.cgi?id=1071914

Signed-off-by: Michele Baldessari <michele@acksyn.org>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-04-16 13:38:25 -07:00
Johan Hovold 36904592bc USB: keyspan: remove dead debugging code
Remove out-commented and ifdeffed debugging code.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
2014-03-12 12:44:50 -07:00
Johan Hovold d9a38a8741 USB: serial: add missing newlines to dev_<level> messages.
Add missing newlines to dev_<level> messages.

Also make some messages less verbose where appropriate.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
2014-03-12 12:44:50 -07:00
Johan Hovold ca0400d2ca USB: serial: add missing braces
Add missing braces to conditional branches and one loop in usb-serial
core and generic implementation.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
2014-03-12 12:44:50 -07:00
Johan Hovold bd58c7bd6f USB: serial: continue to write on errors
Do not discard buffered data and make sure to try to resubmit the write
urbs on errors.

Currently a recoverable error would lead to more data than necessary
being dropped.

Also upgrade error messages from debug to error log level.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
2014-03-12 12:44:49 -07:00
Johan Hovold fc11efe280 USB: serial: continue to read on errors
Make sure to try to resubmit the read urb on errors.

Currently a recoverable error would lead to reduced throughput as only
one urb will be used until the port is closed and reopened (or
resumed or unthrottled).

Also upgrade error messages from debug to error log level.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
2014-03-12 12:44:49 -07:00
Johan Hovold 5083fd7bdf USB: serial: make bulk_out_size a lower limit
Drivers are allowed to override the default bulk-out buffer size
(endpoint maximum packet size) in order to increase throughput, but it
does not make much sense to allow buffers smaller than the default.

Note that this is already how bulk_in_size is defined.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
2014-03-12 12:44:49 -07:00
Johan Hovold d7c933ae7d USB: cypress_m8: fix potential scheduling while atomic
Remove erroneous call to usb_clear_halt which is blocking and cannot be
used in interrupt context.

This code has possibly never been executed as it would cause an oops if
it was. Simply treat a stalled-endpoint error as any other error
condition.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
2014-03-12 12:44:49 -07:00
Joerg Dorchain 6dbd46c849 USB: ftdi_sio: add Cressi Leonardo PID
Hello,

the following patch adds an entry for the PID of a Cressi Leonardo
diving computer interface to kernel 3.13.0.
It is detected as FT232RL.
Works with subsurface.

Signed-off-by: Joerg Dorchain <joerg@dorchain.net>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-26 15:46:42 -08:00
Aleksander Morgado 12df84d4a8 USB: serial: option: blacklist interface 4 for Cinterion PHS8 and PXS8
This interface is to be handled by the qmi_wwan driver.

CC: Hans-Christoph Schemmel <hans-christoph.schemmel@gemalto.com>
CC: Christian Schmiedl <christian.schmiedl@gemalto.com>
CC: Nicolaus Colberg <nicolaus.colberg@gemalto.com>
CC: David McCullough <david.mccullough@accelecon.com>
Signed-off-by: Aleksander Morgado <aleksander@aleksander.es>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-18 12:04:41 -08:00
Raymond Wanyoike 3635c7e2d5 usb: option: blacklist ZTE MF667 net interface
Interface #5 of 19d2:1270 is a net interface which has been submitted to the
qmi_wwan driver so consequently remove it from the option driver.

Signed-off-by: Raymond Wanyoike <raymond.wanyoike@gmail.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-11 15:33:54 -08:00
Ulrich Hahn 76f24e3f39 USB: ftdi_sio: add Tagsys RFID Reader IDs
Adding two more IDs to the ftdi_sio usb serial driver.
It now connects Tagsys RFID readers.
There might be more IDs out there for other Tagsys models.

Signed-off-by: Ulrich Hahn <uhahn@eanco.de>
Cc: Johan Hovold <johan@hovold.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-05 11:39:30 -08:00
Bjørn Mork f948dcf9e9 usb: qcserial: add Netgear Aircard 340U
This device was mentioned in an OpenWRT forum.  Seems to have a "standard"
Sierra Wireless ifnumber to function layout:
 0: qcdm
 2: nmea
 3: modem
 8: qmi
 9: storage

Cc: <stable@vger.kernel.org>
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-05 11:39:30 -08:00
Kristóf Ralovich 2240c36510 USB: simple: add Dynastream ANT USB-m Stick device support
Add support for ANT USB-m Stick from Dynastream Innovations, by listing
USB pid

[34366.944805] usb 6-1: New USB device found, idVendor=0fcf, idProduct=1009
[34366.944817] usb 6-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[34366.944824] usb 6-1: Product: ANT USB-m Stick
[34366.944831] usb 6-1: Manufacturer: Dynastream Innovations

Device reported (https://code.google.com/p/antpm/issues/detail?id=5) to
work through:
$ modprobe usbserial vendor=0x0fcf product=0x1009

Signed-off-by: Kristóf Ralovich <kristof.ralovich@gmail.com>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-04 12:59:15 -08:00
Bjørn Mork 67847baee0 usb: ftdi_sio: add Mindstorms EV3 console adapter
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-04 12:59:14 -08:00
Linus Torvalds bb1281f2aa Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
Pull trivial tree updates from Jiri Kosina:
 "Usual rocket science stuff from trivial.git"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (39 commits)
  neighbour.h: fix comment
  sched: Fix warning on make htmldocs caused by wait.h
  slab: struct kmem_cache is protected by slab_mutex
  doc: Fix typo in USB Gadget Documentation
  of/Kconfig: Spelling s/one/once/
  mkregtable: Fix sscanf handling
  lp5523, lp8501: comment improvements
  thermal: rcar: comment spelling
  treewide: fix comments and printk msgs
  IXP4xx: remove '1 &&' from a condition check in ixp4xx_restart()
  Documentation: update /proc/uptime field description
  Documentation: Fix size parameter for snprintf
  arm: fix comment header and macro name
  asm-generic: uaccess: Spelling s/a ny/any/
  mtd: onenand: fix comment header
  doc: driver-model/platform.txt: fix a typo
  drivers: fix typo in DEVTMPFS_MOUNT Kconfig help text
  doc: Fix typo (acces_process_vm -> access_process_vm)
  treewide: Fix typos in printk
  drivers/gpu/drm/qxl/Kconfig: reformat the help text
  ...
2014-01-22 21:21:55 -08:00
Wolfram Sang 2fc82c2de6 usb: core: allow a reference device for new_id
Often, usb drivers need some driver_info to get a device to work. To
have access to driver_info when using new_id, allow to pass a reference
vendor:product tuple from which new_id will inherit driver_info.

Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-01-10 16:54:35 -08:00
Paul Gortmaker 803a536243 usb: delete non-required instances of include <linux/init.h>
None of these files are actually using any __init type directives
and hence don't need to include <linux/init.h>.  Most are just a
left over from __devinit and __cpuinit removal, or simply due to
code getting copied from one driver to the next.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-01-08 15:01:39 -08:00
Colin Leitner c1f15196ac USB: ftdi_sio: added CS5 quirk for broken smartcard readers
Genuine FTDI chips support only CS7/8. A previous fix in commit
8704211f65 ("USB: ftdi_sio: fixed handling of unsupported CSIZE
setting") enforced this limitation and reported it back to userspace.

However, certain types of smartcard readers depend on specific
driver behaviour that requests 0 data bits (not 5) to change into a
different operating mode if CS5 has been set.

This patch reenables this behaviour for all FTDI devices.

Tagged to be added to stable, because it affects a lot of users of
embedded systems which rely on these readers to work properly.

Cc: stable <stable@vger.kernel.org>
Reported-by: Heinrich Siebmanns <H.Siebmanns@t-online.de>
Tested-by: Heinrich Siebmanns <H.Siebmanns@t-online.de>
Signed-off-by: Colin Leitner <colin.leitner@gmail.com>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-01-07 16:28:43 -08:00
Masanari Iida 8faaaead62 treewide: fix comments and printk msgs
This patch fixed several typo in printk from various
part of kernel source.

Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2014-01-07 15:06:07 +01:00
Johan Hovold bd6383c81d USB: oti6858: switch to generic TIOCMIWAIT implementation
Switch to the generic TIOCMIWAIT implementation.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-01-03 12:42:24 -08:00
Johan Hovold 1acc36e9c8 USB: oti6858: only wake up MSR queue on changes
Only wake up MSR wait queue on actual modem-status changes.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-01-03 12:42:24 -08:00
Johan Hovold 271ec2d2d7 USB: ch341: clean up interrupt handler
Clean up interrupt completion handler somewhat.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-01-03 12:42:24 -08:00
Johan Hovold 5e409a265d USB: ch341: switch to generic TIOCMIWAIT implementation
Switch to the generic TIOCMIWAIT implementation which does not suffer
from the races involved when using the deprecated sleep_on functions.

Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-01-03 12:42:24 -08:00
Johan Hovold d984fe91a8 USB: ch341: only wake up MSR queue on changes
Only wake up MSR wait queue on actual modem-status changes.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-01-03 12:42:24 -08:00
Johan Hovold fd74b0b144 USB: ch341: fix ignored TIOCMIWAIT mask
Make sure the TIOCMIWAIT mask is always honoured.

The CH341 interrupt status has a multiple-status changed flag which
indicates that multiple status changes has occurred since last interrupt
event. Unfortunately, if the final status is the same, there appears to
be no way to determine which signal(s) has changed (an even number of
times).

This means that the multiple-status flag should not be used in
TIOCMIWAIT as it leads to the signal mask argument being ignored (e.g.
TIOCMIWAIT could return if DSR changes twice, even though the user only
cares about carrier changes).

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-01-03 12:42:24 -08:00
Johan Hovold b770081f88 USB: ch341: clean up line-status handling
Clean up line-status handling.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-01-03 12:42:24 -08:00
Johan Hovold ac035628a9 USB: ch341: refactor line-status handling
Refactor line-status handling.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-01-03 12:42:24 -08:00
Johan Hovold ab62a585a0 USB: cypress_m8: switch to generic TIOCMIWAIT implementation
Switch to the generic TIOCMIWAIT implementation which does not suffer
from the races involved when using the deprecated sleep_on functions.

Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-01-03 12:42:24 -08:00
Johan Hovold 7603381e3e USB: cypress_m8: only wake up MSR queue on changes
Only wake up MSR wait queue on actual modem-status changes.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-01-03 12:42:24 -08:00
Johan Hovold 2534be34c9 USB: cypress_m8: clean up protocol definitions
Clean up protocol definitions.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-01-03 12:42:24 -08:00
Johan Hovold 440ebadeae USB: cypress_m8: fix ring-indicator detection and reporting
Fix ring-indicator (RI) status-bit definition, which was defined as CTS,
effectively preventing RI-changes from being detected while reporting
false RI status.

This bug predates git.

Cc: stable@vger.kernel.org
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-01-03 12:42:24 -08:00
Johan Hovold a4bcb29459 USB: pl2303: switch to generic TIOCMIWAIT implementation
Switch to the generic TIOCMIWAIT implementation which does not suffer
from the races involved when using the deprecated sleep_on functions.

Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-01-03 12:42:23 -08:00
Johan Hovold dbfd2866ac USB: pl2303: only wake up MSR queue on changes
Only wake up MSR wait queue on actual modem-status changes.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-01-03 12:42:23 -08:00
Johan Hovold 6020c3bec3 USB: pl2303: clean up line-status handling
Clean up line-status handling somewhat.
Get tty-reference only when actually needed.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-01-03 12:42:23 -08:00
Johan Hovold b693468155 USB: pl2303: make type data const
Declare constant device-type data as const.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-01-03 12:42:23 -08:00
Rahul Bedarkar 7d5c1b9c7c USB: serial: add support for iBall 3.5G connect usb modem
Add support for iBall 3.5G connect usb modem.

$lsusb
Bus 002 Device 006: ID 1c9e:9605 OMEGA TECHNOLOGY

$usb-devices
T:  Bus=02 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#=  6 Spd=480 MxCh= 0
D:  Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs=  1
P:  Vendor=1c9e ProdID=9605 Rev=00.00
S:  Manufacturer=USB Modem
S:  Product=USB Modem
S:  SerialNumber=1234567890ABCDEF
C:  #Ifs= 5 Cfg#= 1 Atr=e0 MxPwr=500mA
I:  If#= 0 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=option
I:  If#= 1 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=option
I:  If#= 2 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=option
I:  If#= 3 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=option
I:  If#= 4 Alt= 0 #EPs= 2 Cls=08(stor.) Sub=06 Prot=50 Driver=usb-storage

Signed-off-by: Rahul Bedarkar <rahulbedarkar89@gmail.com>
Suggested-by: Bjørn Mork <bjorn@mork.no>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-01-03 12:40:22 -08:00
Rahul Bedarkar cd8c50532a USB: serial: correct spelling mistakes in comments
Signed-off-by: Rahul Bedarkar <rahulbedarkar89@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-01-03 12:39:31 -08:00
Johan Hovold 619c43543a USB: pl2303: use C_CMSPAR macro
Use the new C_CMSPAR macro for consistency.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-01-03 12:34:33 -08:00
Andrew Lunn ee467a1f20 USB: serial: add Moxa UPORT 12XX/14XX/16XX driver
Add a driver which supports the following Moxa USB to serial converters:
*       2 ports : UPort 1250, UPort 1250I
*       4 ports : UPort 1410, UPort 1450, UPort 1450I
*       8 ports : UPort 1610-8, UPort 1650-8
*      16 ports : UPort 1610-16, UPort 1650-16

The UPORT devices don't directly fit the USB serial model. USB serial
assumes a bulk in/out endpoint pair per serial port. Thus a dual port
USB serial device is expected to have two bulk in/out pairs. The Moxa
UPORT only has one pair for data transfer and places a header on each
transfer over the endpoint indicating for which port the transfer
relates to. There is a second endpoint pair for events, such as modem
control lines changing state, setting baud rates etc. Again, a
multiplexing header is used on these endpoints.

Some ports need to have a kfifo explicitly allocated since the
framework does not allocate one if there is no associated endpoints.
The framework will however free it on unload of the module.

All data transfers are made on port0, yet the locks are taken on PortN.
urb->context points to PortN, even though the URB is for port0.

Where possible, code from the generic driver is called. However
mxuport_process_read_urb_data() is mostly a cut/paste of
usb_serial_generic_process_read_urb().

The driver will attempt to load firmware from userspace and compare
the available version and the running version. If the available
version is newer, it will be download into RAM of the device and
started. This is optional and the driver appears to work O.K. with
older firmware in the devices ROM.

This driver is based on the MOXA driver and retains MOXAs copyright.

[jhovold@gmail.com: fix get_fw_version error path and some style issues]

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-01-03 12:34:07 -08:00
Johan Hovold 5d85045f4b USB: pl2303: use direct baud-rate encoding when possible
Use direct baud-rate encoding rather than divisors for supported baud
rates.

This restores the way baud rates were set prior to commit 8d48fdf689
("USB: PL2303: correctly handle baudrates above 115200") which added
divisor encoding, but also switched to the new encoding method for all
baudrates above 115200.

As noted by Frank Schäfer <fschaefer.oss@googlemail.com>, baud rate 500k
was later errounously added to the supported baud-rate table although
it can only be set using divisors.

Note that the current implementation could easily be extended to support
arbitrary non-standard baud rates using divisors (e.g. by falling back
to divisors when the table lookup fails).

Cc: Frank Schäfer <fschaefer.oss@googlemail.com>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-01-03 12:31:48 -08:00
Johan Hovold 20b4c78719 USB: pl2303: add helper function for direct baud-rate encoding
Add helper function for direct baud-rate encoding.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-01-03 12:31:48 -08:00
Johan Hovold c82c6d45a2 USB: pl2303: refactor baud-rate divisor handling
Refactor baud-rate divisor handling.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-01-03 12:31:48 -08:00
Johan Hovold 871996ede1 USB: pl2303: enforce baud-rate limits before lookup
Enforce any baud-rate limits before doing table lookup.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-01-03 12:31:48 -08:00
Johan Hovold 59afe10e8d USB: pl2303: refactor baud-rate table lookup
Refactor supported baud-rate table lookup.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-01-03 12:31:48 -08:00
Johan Hovold 79816824c1 USB: pl2303: rename pl2303_encode_baud_rate
Rename baud-rate encoding function to match tty naming.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-01-03 12:31:47 -08:00
Johan Hovold 359defdaa4 USB: pl2303: add device-type abstraction
Encode all device-type specifics in a struct rather than testing for
device type and spreading such information throughout the driver.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-01-03 12:31:47 -08:00
Johan Hovold 23c6acb968 USB: pl2303: add quirk for legacy devices
Add quirk for legacy devices (type 0 and 1) rather than testing on
device type throughout the driver.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-01-03 12:31:47 -08:00
Johan Hovold 7f966ac7a9 USB: pl2303: clean up type handling
Merge types 0 and 1, whose differences are unknown and have always been
treated the same.
Add TYPE_-prefix to both types.
Test for TYPE_01 (rather than !TYPE_HX) for legacy device quirks.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-01-03 12:31:47 -08:00
Johan Hovold f84ee3b2f5 USB: pl2303: use speed_t for baud rates
Use speed_t for baud rates throughout.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-01-03 12:31:47 -08:00
Johan Hovold 228e410537 USB: pl2303: add line-status quirk for Siemens phones
Implement line-status handling for Siemens phones as a quirk rather than
spreading such information all over the driver by matching on vendor and
and product ids.

Note that the SIEMENS_PRODUCT_ID_EF81, which was added after the
line-status handling for the other Siemens phones was fixed, might also
need this quirk.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-01-03 12:31:47 -08:00
Johan Hovold 294bb2c617 USB: pl2303: remove redundant line-request call
Remove redundant get_line_request (the read back settings are never
used).

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-01-03 12:31:47 -08:00
Johan Hovold 383d19c587 USB: pl2303: add error handling to line requests
Refactor and add error handling to line requests.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-01-03 12:31:47 -08:00
Johan Hovold a6ec8245bf USB: pl2303: add error handling to set_control_lines
Add error handling to set_control_lines.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-01-03 12:31:47 -08:00
Johan Hovold 362eb02603 USB: pl2303: add error handling to vendor read and write functions
Add error handling and clean up vendor read and write functions.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-01-03 12:31:47 -08:00
Johan Hovold ccfe8188a3 USB: pl2303: clean up driver somewhat
Use u16 rather than __u16.
Fix multi-line comment style.
Remove some comments.
Remove unnecessary whitespace and add some where appropriate.
Drop DRIVER_DESC define.
Merge and simplify multi-line error message.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-01-03 12:31:47 -08:00