Commit Graph

321721 Commits

Author SHA1 Message Date
Sebastian Andrzej Siewior 1e1a27c325 usb: gadget: remove __devexit in f_uac2
avoids the following section missmatch
|WARNING: drivers/usb/gadget/g_audio.o(.init.text+0x2e7): Section
|mismatch in reference from the function afunc_bind() to the function
|.devexit.text:snd_uac2_remove()
|The function __init afunc_bind() references
|a function __devexit snd_uac2_remove().
|This is often seen when error handling in the init function
|uses functionality in the exit path.
|The fix is often to remove the __devexit annotation of
|snd_uac2_remove() so it may be used outside an exit section.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-09-10 15:34:14 +03:00
Sebastian Andrzej Siewior fac3a43e0a usb: gadget: move bind callback into driver struct usb_composite_driver
It was moved to be an argument in 07a18bd716 ("usb gadget: don't
save bind callback in struct usb_composite_driver"). The reason was to
avoid the section missmatch. The warning was shown because ->bind is
marked as __init becuase it is a one time init. The warning can be also
suppresed by whitelisting the variable i.e. rename it to lets say _probe.

Acked-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-09-10 15:32:58 +03:00
Sebastian Andrzej Siewior e473093114 staging: ccg: Add a note about compatibility issues.
The first item on the todo list is a new user interface. Put this
information into Kconfig's help entry to people are not too confusing
once an user API changes which does not happen in kernel otherwise.

Cc: devel@driverdev.osuosl.org
Acked-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-09-10 15:32:54 +03:00
Kevin Cernekee 613065e53c usb: gadget: bcm63xx UDC driver
Driver for the "USB20D" / "USBD" block on BCM6328, BCM6368, BCM6816,
BCM6362, BCM3383, and others.

The hardware block was designed to support networking applications
(direct connection of a home router to a PC), and the endpoint
configuration is fixed.

[ balbi@ti.com : dropped USB_GADGET_DUALSPEED from Kconfig ]

Signed-off-by: Kevin Cernekee <cernekee@gmail.com>
Acked-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-09-05 15:39:41 +03:00
Sachin Kamat 84749c6dcb usb: gadget: s3c-hsotg: Use devm_clk_get function
devm_* functions are already used in this file. Hence
convert clk_get to devm_clk_get for completeness.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-09-03 17:09:40 +03:00
Sachin Kamat dc2cdcaf4c usb: gadget: s3c-hsudc: Replace 0 with NULL for pointers
Silences the following type of sparse warnings:
warning: Using plain integer as NULL pointer

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-09-03 17:09:37 +03:00
Sachin Kamat affaab4c58 usb: gadget: s3c-hsudc: Add missing braces around sizeof
Silences the following checkpatch warning:
WARNING: sizeof *hsreq should be sizeof(*hsreq)

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-09-03 17:09:33 +03:00
Sachin Kamat 78f0c53ef8 usb: gadget: s3c-hsudc: Use devm_* functions
devm_* functions are used to replace kzalloc, request_mem_region, ioremap
clk_get and request_irq functions in probe call. With the usage of devm_*
functions explicit freeing and unmapping is not required.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-09-03 17:09:10 +03:00
Wei Yongjun 9d2333d0d9 usb: gadget: remove duplicated include from pxa25x_udc.c
From: Wei Yongjun <yongjun_wei@trendmicro.com.cn>

Remove duplicated include.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-08-31 12:50:13 +03:00
Julia Lawall 44fd6c0266 usb: gadget: lpc32xx_udc.c: adjust inconsistent IS_ERR and PTR_ERR
Change the call to PTR_ERR to access the value just tested by IS_ERR.

The semantic match that finds this problem is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@
expression e,e1;
@@

(
if (IS_ERR(e)) { ... PTR_ERR(e) ... }
|
if (IS_ERR(e=e1)) { ... PTR_ERR(e) ... }
|
*if (IS_ERR(e))
 { ...
*  PTR_ERR(e1)
   ... }
)
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-08-31 12:49:52 +03:00
Michal Nazarewicz 85b8614d72 usb: gadget: get rid of USB_GADGET_{DUAL,SUPER}SPEED
This commit removes USB_GADGET_DUALSPEED and USB_GADGET_SUPERSPEED
Kconfig options.  Since now kernel allows many UDC drivers to be
compiled, those options may turn to no longer be valid.  For
instance, if someone decides to build UDC that supports super
speed and UDC that supports high speed only, the latter will be
"assumed" to support super speed since USB_GADGET_SUPERSPEED will
be selected by the former.

The test of whether CONFIG_USB_GADGET_*SPEED was defined was just
an optimisation which removed otherwise dead code (ie. if UDC is
not dual speed, there is no need to handle cases that can happen
if speed is high).  This commit removes those checks.

Signed-off-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-08-31 12:49:40 +03:00
Sachin Kamat 86bab36662 usb: gadget: s3c2410_udc: Do not use integer for NULL
'req' being a pointer shouldn't be equated with 0.

Fixes the following compilation warning:
drivers/usb/gadget/s3c2410_udc.c:1299:13: warning:
Using plain integer as NULL pointer

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-08-31 12:42:00 +03:00
Sachin Kamat 1660c89446 usb: gadget: s3c2410_udc: Move assignment outside if condition
Fixes the following checkpatch errors:
ERROR: do not use assignment in if condition

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-08-31 12:41:55 +03:00
Sachin Kamat ff24166c39 usb: gadget: s3c2410_udc: Silence checkpatch errors and warnings
Silences about 75 errors and warnings related to
- Spacing
- Alignment of braces
- Line over 80 characters

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-08-31 12:41:51 +03:00
Sachin Kamat c2892cd4d9 usb: gadget: s3c2410_udc: Use pr_* and dev_err functions
Replace printk with corresponding pr_* and dev_err functions.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-08-31 12:41:48 +03:00
Sachin Kamat 2e8e25b882 usb: gadget: s3c2410_udc: Replace <asm/io.h> with <linux/io.h>
Fixes the following warning:
WARNING: Use #include <linux/io.h> instead of <asm/io.h>

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-08-31 12:41:43 +03:00
Alan Stern d0d860758b usb: gadget: dummy-hcd: remember to update driver pointer
This patch (as1599) fixes dummy-hcd to make it update the appropriate
driver pointer when a new gadget driver is bound or unbound.  Without
this change, the gadget driver's name doesn't appear in dev_printk
output.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-08-31 12:41:39 +03:00
Roland Stigge c4846a1807 usb: gadget: lpc32xx_udc: Support multiple controllers
The lpc32xx_udc driver supported only one controller by defining a global
static struct for it. This patch enables multiple instances of the controller
by dynamic allocation of the struct at probe(). A static struct is kept as a
template on initialization since it does some complex preset, reflecting fixed
hardware endpoint structure.

Signed-off-by: Roland Stigge <stigge@antcom.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-08-31 12:41:25 +03:00
Roland Stigge 78ca913973 usb: gadget: lpc32xx_udc: Remove usb_endpoint_descriptor
This patch removes the utilization of struct usb_endpoint_descriptor, as done
by other drivers also. This was done on request by the USB gadget maintainers,
since this API is obsoleted.

Signed-off-by: Roland Stigge <stigge@antcom.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-08-31 12:41:21 +03:00
Roland Stigge 252d8cec49 usb: gadget: lpc32xx_udc: Port to new start/stop interface
This patch adjusts the LPC32xx USB gadget driver to the new udc_start /
udc_stop interface.

Signed-off-by: Roland Stigge <stigge@antcom.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-08-31 12:41:16 +03:00
Shimoda, Yoshihiro 4e177260e5 usb: renesas_usbhs: modify the irq handler for sharing irq
When IORESOURCE_IRQ_SHAREABLE is set, the irq handler may be called
even if the interupt of the USB module doesn't happen. So, it may
clear the interrupt flags by mistake. This patch fixes it.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-08-23 11:04:20 +03:00
Andy Shevchenko 8c7ca99250 usb: gadget: use %pm to print mac addresses
%pm already provides pretty print for mac addresses, let's
use that and drop homebrew mac address printing.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-08-23 11:04:20 +03:00
Kevin Cernekee 974e9323de usb: gadget: udc-core: Race between disconnect/unbind and setup
usb_gadget_remove_driver() runs through a four-step sequence to shut down
the gadget driver.  For the case of a composite gadget + at91 UDC, this
would look like:

    udc->driver->disconnect(udc->gadget);          // composite_disconnect()
    usb_gadget_disconnect(udc->gadget);            // at91_pullup(gadget, 0)
    udc->driver->unbind(udc->gadget);              // composite_unbind()
    usb_gadget_udc_stop(udc->gadget, udc->driver); // at91_stop()

The UDC driver can receive SETUP packets from the host up until the
point when usb_gadget_disconnect() returns.  On rare occasions, the
gadget driver may see this sequence:

    udc->driver->disconnect(udc->gadget);          // composite_disconnect()
    udc->driver->setup(udc->gadget, &ctrl);        // composite_setup()
    udc->driver->unbind(udc->gadget);              // composite_unbind()

Some gadget drivers, such as composite, assume this will never happen
and crash as a result.

The fix is to quiesce the UDC hardware (via usb_gadget_disconnect)
before running the gadget driver through the disconnect/unbind sequence.

Reviewed-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Kevin Cernekee <cernekee@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-08-23 11:04:19 +03:00
Andy Shevchenko d3091cfff7 usb: gadget: use native print_hex_dump_bytes()
Acked-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-08-23 11:04:18 +03:00
Du, Changbin 2868fea2d6 usb: gadget: s3c-hsotg: fix core reset timeout failure
The timeout values were 1000 and timeout issue occured many times on my
s3c6410 Soc based board (mostly when booting whith USB cable not
connected). This patch increase the values to 10000 to guarantee the
success of reset.

Having set timeout to 10000, I printed the remained timeout values
which could cause timeout issue before this change (tested several
times).
the first timeout value remained:
	timeout = 8079
	timeout = 8079
	timeout = 8078
	timeout = 8081
the second timeout value remained:
	timeout = 7940
	timeout = 7945
	timeout = 7940
	timeout = 7938
Seeing from above values, I think the value 10000 is big enough.

Signed-off-by: Du, Changbin <changbin.du@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-08-23 11:04:18 +03:00
Michael Grzeschik 4fefe9f6de usb composite: fix locking in usb_function_activate
The lockdep hunter mentions a non consistent usage of spin_lock and
spin_lock_irqsafe in the composite_disconnect and usb_function_activate
function:

[   15.700897] =================================
[   15.705255] [ INFO: inconsistent lock state ]
[   15.709617] 3.5.0-rc5+ #413 Not tainted
[   15.713453] ---------------------------------
[   15.717812] inconsistent {HARDIRQ-ON-W} -> {IN-HARDIRQ-W} usage.
[   15.723822] uvc-gadget/116 [HC1[1]:SC0[0]:HE0:SE1] takes:
[   15.729222]  (&(&cdev->lock)->rlock){?.+...}, at: [<7f0049e8>] composite_disconnect+0x2c/0x74 [g_webcam]
[   15.738797] {HARDIRQ-ON-W} state was registered at:
[   15.743677]   [<8006de3c>] mark_lock+0x148/0x688
[   15.748325]   [<8006ecb0>] __lock_acquire+0x934/0x1b74
[   15.753481]   [<8007047c>] lock_acquire+0x98/0x138
[   15.758288]   [<804c776c>] _raw_spin_lock+0x4c/0x84
[   15.763188]   [<7f006ae4>] usb_function_activate+0x28/0x94 [g_webcam]
[   15.769652]   [<7f00820c>] usb_ep_autoconfig_reset+0x78/0x98 [g_webcam]
[   15.776287]   [<7f0082a4>] uvc_v4l2_open+0x78/0x94 [g_webcam]
[   15.782054]   [<80366a38>] v4l2_open+0x104/0x130
[   15.786697]   [<800efd30>] chrdev_open+0xa0/0x170
[   15.791423]   [<800e9718>] do_dentry_open.isra.13+0x1e8/0x264
[   15.797186]   [<800ea5d4>] nameidata_to_filp+0x58/0x94
[   15.802340]   [<800fa29c>] do_last.isra.31+0x2a0/0x808
[   15.807497]   [<800faa40>] path_openat+0xc8/0x3e8
[   15.812216]   [<800fae90>] do_filp_open+0x3c/0x90
[   15.816936]   [<800ea6fc>] do_sys_open+0xec/0x184
[   15.821655]   [<800ea7c4>] sys_open+0x30/0x34
[   15.826027]   [<8000e5c0>] ret_fast_syscall+0x0/0x48
[   15.831015] irq event stamp: 6048
[   15.834330] hardirqs last  enabled at (6047): [<804c81b8>] _raw_spin_unlock_irqrestore+0x40/0x54
[   15.843132] hardirqs last disabled at (6048): [<8000e174>] __irq_svc+0x34/0x60
[   15.850370] softirqs last  enabled at (5940): [<80028380>] __do_softirq+0x188/0x270
[   15.858043] softirqs last disabled at (5935): [<80028944>] irq_exit+0xa0/0xa8
[   15.865195]
[   15.865195] other info that might help us debug this:
[   15.871724]  Possible unsafe locking scenario:
[   15.871724]
[   15.877645]        CPU0
[   15.880091]        ----
[   15.882537]   lock(&(&cdev->lock)->rlock);
[   15.886659]   <Interrupt>
[   15.889278]     lock(&(&cdev->lock)->rlock);
[   15.893573]
[   15.893573]  *** DEADLOCK ***
[   15.893573]
[   15.899496] no locks held by uvc-gadget/116.
[   15.903765]
[   15.903765] stack backtrace:
[   15.908125] Backtrace:
[   15.910604] [<80012038>] (dump_backtrace+0x0/0x114) from [<804bf8a4>] (dump_stack+0x20/0x24)
[   15.919043]  r6:dfb8e6f0 r5:dfb8e400 r4:809717ec r3:60000193
[   15.924766] [<804bf884>] (dump_stack+0x0/0x24) from [<804c0c0c>] (print_usage_bug+0x258/0x2c0)
[   15.933388] [<804c09b4>] (print_usage_bug+0x0/0x2c0) from [<8006e240>] (mark_lock+0x54c/0x688)
[   15.942006] [<8006dcf4>] (mark_lock+0x0/0x688) from [<8006edb8>] (__lock_acquire+0xa3c/0x1b74)
[   15.950625] [<8006e37c>] (__lock_acquire+0x0/0x1b74) from [<8007047c>] (lock_acquire+0x98/0x138)
[   15.959418] [<800703e4>] (lock_acquire+0x0/0x138) from [<804c78fc>] (_raw_spin_lock_irqsave+0x58/0x94)
[   15.968736] [<804c78a4>] (_raw_spin_lock_irqsave+0x0/0x94) from [<7f0049e8>] (composite_disconnect+0x2c/0x74 [g_webcam])
[   15.979605]  r7:00000012 r6:df82b0c4 r5:ded755bc r4:ded75580
[   15.985331] [<7f0049bc>] (composite_disconnect+0x0/0x74 [g_webcam]) from [<8033c170>] (_gadget_stop_activity+0xc4/0x120)
[   15.996200]  r6:df82b0c4 r5:df82b0c8 r4:df82b0d0 r3:7f0049bc
[   16.001919] [<8033c0ac>] (_gadget_stop_activity+0x0/0x120) from [<8033e390>] (udc_irq+0x724/0xcb8)
[   16.010877]  r6:df82b010 r5:00000000 r4:df82b010 r3:00000000
[   16.016595] [<8033dc6c>] (udc_irq+0x0/0xcb8) from [<8033baec>] (ci_irq+0x64/0xdc)
[   16.024086] [<8033ba88>] (ci_irq+0x0/0xdc) from [<80086538>] (handle_irq_event_percpu+0x74/0x298)
[   16.032958]  r5:807fd414 r4:df38fdc0
[   16.036566] [<800864c4>] (handle_irq_event_percpu+0x0/0x298) from [<800867a8>] (handle_irq_event+0x4c/0x6c)
[   16.046315] [<8008675c>] (handle_irq_event+0x0/0x6c) from [<80089318>] (handle_level_irq+0xbc/0x11c)
[   16.055447]  r6:def04000 r5:807fd414 r4:807fd3c0 r3:00020000
[   16.061166] [<8008925c>] (handle_level_irq+0x0/0x11c) from [<80085cc8>] (generic_handle_irq+0x38/0x4c)
[   16.070472]  r5:807f7f64 r4:8081e9f8
[   16.074082] [<80085c90>] (generic_handle_irq+0x0/0x4c) from [<8000ef98>] (handle_IRQ+0x5c/0xbc)
[   16.082788] [<8000ef3c>] (handle_IRQ+0x0/0xbc) from [<800085cc>] (tzic_handle_irq+0x6c/0x9c)
[   16.091225]  r8:00000000 r7:def059b0 r6:00000001 r5:00000000 r4:00000000
r3:00000012
[   16.099141] [<80008560>] (tzic_handle_irq+0x0/0x9c) from [<8000e184>] (__irq_svc+0x44/0x60)
[   16.107494] Exception stack(0xdef059b0 to 0xdef059f8)
[   16.112550] 59a0:                                     00000001 00000001 00000000 dfb8e400
[   16.120732] 59c0: 40000013 81a2e500 00000000 81a2e500 00000000 00000000 80862418 def05a0c
[   16.128912] 59e0: def059c8 def059f8 80070e24 804c81bc 20000013 ffffffff
[   16.135542] [<804c8178>] (_raw_spin_unlock_irqrestore+0x0/0x54) from [<8003d0ec>] (__queue_work+0x108/0x470)
[   16.145369]  r5:dfb1a30c r4:81b93c00
[   16.148978] [<8003cfe4>] (__queue_work+0x0/0x470) from [<8003d4e0>] (queue_work_on+0x4c/0x54)
[   16.157511] [<8003d494>] (queue_work_on+0x0/0x54) from [<8003d544>] (queue_work+0x30/0x34)
[   16.165774]  r6:df2e6900 r5:80e0c2f8 r4:dfb1a2c8 r3:def04000
[   16.171495] [<8003d514>] (queue_work+0x0/0x34) from [<80493284>] (rpc_make_runnable+0x9c/0xac)
[   16.180113] [<804931e8>] (rpc_make_runnable+0x0/0xac) from [<80493c88>] (rpc_execute+0x40/0xa8)
[   16.188811]  r5:def05ad4 r4:dfb1a2c8
[   16.192426] [<80493c48>] (rpc_execute+0x0/0xa8) from [<8048c734>] (rpc_run_task+0xa8/0xb4)
[   16.200690]  r8:00000001 r7:df74f520 r6:ded75700 r5:def05ad4 r4:dfb1a2c8
r3:00000002
[   16.208618] [<8048c68c>] (rpc_run_task+0x0/0xb4) from [<801f1608>] (nfs_initiate_read+0xb4/0xd4)
[   16.217403]  r5:df3e86c0 r4:00000000
[   16.221015] [<801f1554>] (nfs_initiate_read+0x0/0xd4) from [<801f1c64>] (nfs_generic_pg_readpages+0x9c/0x114)
[   16.230937] [<801f1bc8>] (nfs_generic_pg_readpages+0x0/0x114) from [<801f0744>] (__nfs_pageio_add_request+0xe8/0x214)
[   16.241545]  r8:000bf000 r7:00000000 r6:00000000 r5:deef4640 r4:def05c1c
r3:801f1bc8
[   16.249463] [<801f065c>] (__nfs_pageio_add_request+0x0/0x214) from [<801f0e3c>] (nfs_pageio_add_request+0x28/0x54)
[   16.259818] [<801f0e14>] (nfs_pageio_add_request+0x0/0x54) from [<801f1394>] (readpage_async_filler+0x114/0x170)
[   16.269992]  r5:def05c58 r4:80fd7300
[   16.273607] [<801f1280>] (readpage_async_filler+0x0/0x170) from [<800bb418>] (read_cache_pages+0xa0/0x108)
[   16.283259]  r8:00200200 r7:00100100 r6:df74f654 r5:def05cd0 r4:80fd7300
[   16.290034] [<800bb378>] (read_cache_pages+0x0/0x108) from [<801f218c>] (nfs_readpages+0xc4/0x168)
[   16.298999] [<801f20c8>] (nfs_readpages+0x0/0x168) from [<800bb1d0>] (__do_page_cache_readahead+0x254/0x354)
[   16.308833] [<800baf7c>] (__do_page_cache_readahead+0x0/0x354) from [<800bb5d0>] (ra_submit+0x38/0x40)
[   16.318145] [<800bb598>] (ra_submit+0x0/0x40) from [<800bb6b0>] (ondemand_readahead+0xd8/0x3b0)
[   16.326851] [<800bb5d8>] (ondemand_readahead+0x0/0x3b0) from [<800bba20>] (page_cache_async_readahead+0x98/0xa8)
[   16.337043] [<800bb988>] (page_cache_async_readahead+0x0/0xa8) from [<800b2118>] (generic_file_aio_read+0x5b4/0x7c4)
[   16.347565]  r6:00000000 r5:df74f654 r4:80fd70a0
[   16.352231] [<800b1b64>] (generic_file_aio_read+0x0/0x7c4) from [<801e82c0>] (nfs_file_read+0x7c/0xcc)
[   16.361544] [<801e8244>] (nfs_file_read+0x0/0xcc) from [<800eab80>] (do_sync_read+0xb4/0xf4)
[   16.369981]  r9:00000000 r8:def05f70 r7:00000000 r6:00000000 r5:dec34900
r4:fffffdee
[   16.377896] [<800eaacc>] (do_sync_read+0x0/0xf4) from [<800eb548>] (vfs_read+0xb4/0x144)
[   16.385987]  r8:00000000 r7:def05f70 r6:76a95008 r5:003e3dd6 r4:dec34900
[   16.392761] [<800eb494>] (vfs_read+0x0/0x144) from [<800eb624>] (sys_read+0x4c/0x78)
[   16.400504]  r8:00000000 r7:00000003 r6:003e3dd6 r5:76a95008 r4:dec34900
[   16.407279] [<800eb5d8>] (sys_read+0x0/0x78) from [<8000e5c0>] (ret_fast_syscall+0x0/0x48)
[   16.415543]  r9:def04000 r8:8000e864 r6:000086b4 r5:00000000 r4:00000000
[   20.872729]  gadget: high-speed config #1: Video
[   20.877368]  gadget: uvc_function_set_alt(0, 0)
[   20.881908]  gadget: uvc_function_set_alt(1, 0)
[   20.891464]  gadget: uvc_function_set_alt(1, 0)

Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-08-23 11:04:17 +03:00
Neil Zhang 11c37c8b64 usb: gadget: mv_udc: fix boot up hang
Fix boot up hang when enable udc without otg enabled.
The root cause is that the clock will be shut down when probe routine is
finished because of clock gating. When a gadget driver is registered at
this time, it will call mv_udc_start which in turn will call
mv_udc_vbus_session. If there is no cable attached at the boot up time,
the vbus is low, so it will call stop_activity path without clock
enabled which will cause system hang then.
Actually, we need't go this path when clock is disabled, what we need to
do is just jump out.

Signed-off-by: Neil Zhang <zhangwm@marvell.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-08-23 11:04:17 +03:00
Yunfan Zhang 1dcaa252fd usb: gadget: mv_udc: fix hang when shutdown
Fix system hang in udc shutdown routine which caused by accessing usb
register when clock is disabled. So enable usb clock before access
register.

Signed-off-by: Yunfan Zhang <yfzhang@marvell.com>
Signed-off-by: Neil Zhang <zhangwm@marvell.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-08-23 11:04:16 +03:00
Chao Xie 60326ce377 usb: gadget: mv_udc: add iso support
In order to support iso, we need do the following things:
1. fix length for one dtd
2. allow req contains multiple packets for a ISO transfer

Signed-off-by: Chao Xie <chao.xie@marvell.com>
Signed-off-by: Yu Xu <yuxu@marvell.com>
Signed-off-by: Neil Zhang <zhangwm@marvell.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-08-23 11:04:16 +03:00
Neil Zhang 583a7263c7 usb: gadget: mv_udc: enable stream mode
According to ChipIdea's reference manual in section 8.5.2
"Non-streaming operational mode in device mode", we'd better enable stream
mode, especially that ISO endpoints are not supported when the SDIS bit
is set.

Signed-off-by: Neil Zhang <zhangwm@marvell.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-08-23 11:04:15 +03:00
Neil Zhang 0344606bec usb: gadget: mv_udc: avoid sleeping on spinlock
build_dtd() can be called when hold a spinlock, but GFP_KERNEL may cause
dma_pool_alloc() sleep, So we need use GFP_ATOMIC instead of GFP_KERNEL.
But using GFP_ATOMIC may cause failure when allocating memory, add error
handler to handle it.

Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: Neil Zhang <zhangwm@marvell.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-08-23 11:04:15 +03:00
Neil Zhang a07bc24e27 usb: gadget: mv_udc: remove unused code
Clean unused code for mv_udc driver.

Signed-off-by: Neil Zhang <zhangwm@marvell.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-08-23 11:04:14 +03:00
Neil Zhang 9b2035a0b9 usb: gadget: mv_udc: reduce the delay interval
There are several places use udelay(LOOPS_USEC) to wait the status to be
changed, but the delay interval is a bit too long, so reduce it to
enhance the performance.

Signed-off-by: Neil Zhang <zhangwm@marvell.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-08-23 11:04:14 +03:00
Linus Torvalds d9875690d9 Linux 3.6-rc2 2012-08-16 14:51:24 -07:00
Ian Kent a45440f05e autofs4 - fix get_next_positive_subdir()
Following a report of a crash during an automount expire I found that
the locking in fs/autofs4/expire.c:get_next_positive_subdir() was wrong.
Not only is the locking wrong but the function is more complex than it
needs to be.

The function is meant to calculate (and dget) the next entry in the list
of directories contained in the root of an autofs mount point (an autofs
indirect mount to be precise). The main problem was that the d_lock of
the owner of the list was not being taken when walking the list, which
lead to list corruption under load. The only other lock that needs to
be taken is against the next dentry candidate so it can be checked for
usability.

Signed-off-by: Ian Kent <raven@themaw.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-08-16 11:58:28 -07:00
Linus Torvalds 63ca5f1d17 VFIO for v3.6-rc1
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Merge tag 'vfio-for-v3.6-rc1' of git://github.com/awilliam/linux-vfio

Pull VFIO fix from Alex Williamson:
 "Just a trivial patch to include vfio.h in the installed headers so we
  can complete userspace integration into QEMU."

* tag 'vfio-for-v3.6-rc1' of git://github.com/awilliam/linux-vfio:
  vfio: Include vfio.h in installed headers
2012-08-16 11:47:42 -07:00
Linus Torvalds 2eac9eb8a2 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse
Pull fuse updates from Miklos Szeredi.

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse:
  fuse: verify all ioctl retry iov elements
  fuse: add missing INIT flag descriptions
  fuse: add missing INIT flags
  fuse: update attributes on aio_read
  fuse: invalidate inode mapping if mtime changes
  fuse: add FUSE_AUTO_INVAL_DATA init flag
2012-08-16 11:46:31 -07:00
Linus Torvalds ad54e46113 Fix:
* On machines with large MMIO/PCI E820 spaces we fail to boot b/c
    we failed to pre-allocate large enough virtual space for extend_brk.
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Merge tag 'stable/for-linus-3.6-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen

Pull Xen fix from Konrad Rzeszutek Wilk:
 "Way back in v3.5 we added a mechanism to populate back pages that were
  released (they overlapped with MMIO regions), but neglected to reserve
  the proper amount of virtual space for extend_brk to work properly.

  Coincidentally some other commit aligned the _brk space to larger area
  so I didn't trigger this until it was run on a machine with more than
  2GB of MMIO space."

 * On machines with large MMIO/PCI E820 spaces we fail to boot b/c
   we failed to pre-allocate large enough virtual space for extend_brk.

* tag 'stable/for-linus-3.6-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
  xen/p2m: Reserve 8MB of _brk space for P2M leafs when populating back.
2012-08-16 11:31:59 -07:00
Linus Torvalds 15a063f78e SuperH fixes for 3.6-rc2
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Merge tag 'sh-for-linus' of git://github.com/pmundt/linux-sh

Pull SuperH fixes from Paul Mundt.

* tag 'sh-for-linus' of git://github.com/pmundt/linux-sh:
  sh: intc: Handle domain association for sparseirq pre-allocated vectors.
  sh: sh7269: Fix LCD pinmux
  sh: dma: fix request_irq usage
2012-08-16 11:31:29 -07:00
Dan Williams 1dd8372d35 MAINTAINERS: update address for Dan Williams
Moved to djbw@fb.com

Cc: Dave Jiang <dave.jiang@intel.com>
Cc: Vinod Koul <vinod.koul@linux.intel.com>
Signed-off-by: Dan Williams <djbw@fb.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-08-16 11:28:57 -07:00
Borislav Petkov 2a95e37c12 scripts/decodecode: Fixup trapping instruction marker
When dumping "Code: " sections from an oops, the trapping instruction
%rip points to can be a string copy

  2b:*  f3 a5                   rep movsl %ds:(%rsi),%es:(%rdi)

and the line contain a bunch of ":".  Current "cut" selects only the and
the second field output looks funnily overlaid this:

  2b:*  f3 a5                   rep movsl %ds     <-- trapping instruction:(%rsi),%es:(%rdi

Fix this by selecting the remaining fields too.

Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: linux-kbuild@vger.kernel.org
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-08-16 11:15:09 -07:00
Linus Torvalds 2b014fcc7d Merge branch 'fixes' of git://git.infradead.org/users/vkoul/slave-dma
Pull two slave-dmaengine fixes from Vinod Koul:
 "One fixes the correct use of clock API in imx driver and the other
  enables clock for tegra driver, which is used for other tegra driver
  conversion to dmanegine in -next."

* 'fixes' of git://git.infradead.org/users/vkoul/slave-dma:
  dma: tegra: enable/disable dma clock
  dma: imx-dma: Fix kernel crash due to missing clock conversion
2012-08-16 11:13:16 -07:00
Linus Torvalds d3b8e0dc82 Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Pull more drm fixes from Dave Airlie:
 "Just some intel and nouveau ones this time, intel has more edp panel
  fixes for macbooks and nouveau has a suspend/resume regression fix in
  there."

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
  drm/i915: Apply post-sync write for pipe control invalidates
  drm/i915: reorder edp disabling to fix ivb MacBook Air
  drm/nv86/fifo: suspend fix
  drm/nouveau: disable copy engine on NVAF
  nouveau: fixup scanout enable in nvc0_pm
  drm/nouveau/aux: mask off higher bits of auxch index in i2c table entry
  drm/nvd0/disp: mask off high 16 bit of negative cursor x-coordinate
  drm/i915: ensure i2c adapter is all set before adding it
  drm/i915: ignore eDP bpc settings from vbt
  drm/i915: Fix blank panel at reopening lid
  drm/nve0/fifo: add support for the flip completion swmthd
2012-08-16 11:08:32 -07:00
Linus Torvalds aacea90fa4 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc
Pull two sparc fixes from David S. Miller.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
  sparc64: Be less verbose during vmemmap population.
  sparc64: do not clobber personality flags in sys_sparc64_personality()
2012-08-15 17:07:01 -07:00
Dave Airlie 2e26c73a1e Merge branch 'drm-nouveau-fixes' of git://git.freedesktop.org/git/nouveau/linux-2.6 into drm-fixes
* 'drm-nouveau-fixes' of git://git.freedesktop.org/git/nouveau/linux-2.6:
  drm/nv86/fifo: suspend fix
  drm/nouveau: disable copy engine on NVAF
  nouveau: fixup scanout enable in nvc0_pm
  drm/nouveau/aux: mask off higher bits of auxch index in i2c table entry
  drm/nvd0/disp: mask off high 16 bit of negative cursor x-coordinate
  drm/nve0/fifo: add support for the flip completion swmthd
2012-08-15 20:31:22 +10:00
Dave Airlie a389b6a156 Merge branch 'drm-intel-fixes' of git://people.freedesktop.org/~danvet/drm-intel into drm-fixes
Daniel Vetter writes:

"A few important fixers:
- fix various lvds backlight issues, regressed in 3.6 (Takashi Iwai)
- make the retina mbp work (ignore bogus edp bpc value in vbt)
- fix a gmbus regression introduced in (iirc) 3.4 (Jani Nikula)
- fix an edp panel power sequence regression, fixes the new macbook air
- apply the tlb invalidate w/a

Otherwise we still have another gmbus regression (patches are awaiting
tested-bys) and there's something odd going with some rare systems not
entering rc6 often enough (and hence blowing through too much power).  It
seems to be a timing-related issue and can be mitigated by frobbing the
magic tuning parameters. We're still working on that one. Also, we still
have some fallout from the hw context support, but you can only hit that
with mesa master."

* 'drm-intel-fixes' of git://people.freedesktop.org/~danvet/drm-intel:
  drm/i915: Apply post-sync write for pipe control invalidates
  drm/i915: reorder edp disabling to fix ivb MacBook Air
  drm/i915: ensure i2c adapter is all set before adding it
  drm/i915: ignore eDP bpc settings from vbt
  drm/i915: Fix blank panel at reopening lid
2012-08-15 20:27:51 +10:00
David S. Miller 2856cc2e4d sparc64: Be less verbose during vmemmap population.
On a 2-node machine with 256GB of ram we get 512 lines of
console output, which is just too much.

This mimicks Yinghai Lu's x86 commit c2b91e2eec
(x86_64/mm: check and print vmemmap allocation continuous) except that
we aren't ever going to get contiguous block pointers in between calls
so just print when the virtual address or node changes.

This decreases the output by an order of 16.

Also demote this to KERN_DEBUG.

Signed-off-by: David S. Miller <davem@davemloft.net>
2012-08-15 00:37:29 -07:00
Chris Wilson 7d54a90428 drm/i915: Apply post-sync write for pipe control invalidates
When invalidating the TLBs it is documentated as requiring a post-sync
write. Failure to do so seems to result in a GPU hang.

Exposure to this hang on IVB seems to be a result of removing the extra
stalls required for SNB pipecontrol workarounds:

commit 6c6cf5aa9c
Author: Chris Wilson <chris@chris-wilson.co.uk>
Date:   Fri Jul 20 18:02:28 2012 +0100

    drm/i915: Only apply the SNB pipe control w/a to gen6

Note: Manually switch the pipe_control cmd to 4 dwords to avoid a
(silent) functional conflict with -next. This way will get a loud (but
conflict with next (since the scratch_addr has been deleted there).

Reported-and-tested-by: yex.tian@intel.com
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=53322
Acked-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
[danvet: added note about merge conflict with -next.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2012-08-14 09:47:45 +02:00
Daniel Vetter 35a38556d9 drm/i915: reorder edp disabling to fix ivb MacBook Air
eDP is tons of fun. It turns out that at least the new MacBook Air 5,1
model absolutely doesn't like the new force vdd dance we've introduced
in

commit 6cb49835da
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date:   Sun May 20 17:14:50 2012 +0200

    drm/i915: enable vdd when switching off the eDP panel

But that patch also tried to fix some neat edp sequence issue with the
force_vdd timings. Closer inspection reveals that we've raised
force_vdd only to do the aux channel communication dp_sink_dpms. If we
move the edp_panel_off below that, we don't need any force_vdd for the
disable sequence, which makes the Air happy.

Unfortunately the reporter of the original bug that the above commit
fixed is travelling, so we can't test whether this regresses things.
But my theory is that since we don't check for any power-off ->
force_vdd-on delays in edp_panel_vdd_on, this was the actual
root-cause of this failure. With that force_vdd dance completely
eliminated, I'm hopeful the original bug stays fixed, too.

For reference the old bug, which hopefully doesn't get broken by this:

https://bugzilla.kernel.org/show_bug.cgi?id=43163

In any case, regression fixers win over plain bugfixes, so this needs
to go in asap.

v2: The crucial pieces seems to be to clear the force_vdd flag
uncoditionally, too, in edp_panel_off. Looks like this is left behind
by the firmware somehow.

v3: The Apple firmware seems to switch off the panel on it's own, hence
we still need to keep force_vdd on, but properly clear it when switching
the panel off.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=45671
Tested-by: Roberto Romer <sildurin@gmail.com>
Tested-by: Daniel Wagner <wagi@monom.org>
Tested-by: Keith Packard <keithp@keithp.com>
Cc: stable@vger.kernel.org
Cc: Keith Packard <keithp@keithp.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2012-08-14 09:38:25 +02:00
Linus Torvalds ddf343f635 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 patches from Martin Schwidefsky:
 "Included are bug fixes and a patch to enable system call filtering
  with BPF."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  s390/compat: fix mmap compat system calls
  s390/compat: fix compat wrappers for process_vm system calls
  s390: do not clobber personality flags in sys_32_personality()
  s390/seccomp: add support for system call filtering using BPF
  s390/sclp_sdias: Add missing break and "fall through"
  s390/mm: remove MAX_PHYSADDR_BITS define
2012-08-14 07:58:59 +03:00