Commit Graph

132428 Commits

Author SHA1 Message Date
Rambaldi a70f81c1c0 firedtv: rename files, variables, functions from firesat to firedtv
Combination of the following changes:

Sat, 17 Jan 2009 14:47:34 +0100
firedtv: rename variables and functions from firesat to firedtv

    Signed-off-by: Rambaldi <Rambaldi@xs4all.nl>

    Additional changes by Stefan Richter:

    Renamed struct firedtv *firedtv to struct firedtv *fdtv and
    firedtv_foo_bar() to fdtv_foo_bar() for brevity.

Sat, 17 Jan 2009 13:07:44 +0100
firedtv: rename files from firesat to firedtv

    Signed-off-by: Rambaldi <Rambaldi@xs4all.nl>

    Additional changes by Stefan Richter:

    Name the directory "firewire" instead of "firedtv".
    Standardize on "-" instead of "_" in file names, because that's what
    drivers/firewire/ and drivers/media/dvb/dvb-usb/ use too.
    Build fix.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2009-02-24 14:51:29 +01:00
Julia Lawall 291f006efe firedtv: Use DEFINE_SPINLOCK
SPIN_LOCK_UNLOCKED is deprecated.  The following makes the change suggested
in Documentation/spinlocks.txt

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2009-02-24 14:51:29 +01:00
Henrik Kurelid a40bf55916 firedtv: fix registration - adapter number could only be zero
There was a bug causing the initialization to fail if adapter number was
greater than zero. The adapter was however registered which caused the driver
to oops the second time initialization was tried.

Signed-off-by: Henrik Kurelid <henrik@kurelid.se>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2009-02-24 14:51:28 +01:00
Henrik Kurelid 7199e523ef firedtv: use length_field() of PMT as length
Parsed and used the length_field() of the PMT message instead of using
the length field of the message struct, which does not seem to be filled
correctly by e.g. MythTV.

Signed-off-by: Henrik Kurelid <henrik@kurelid.se>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2009-02-24 14:51:28 +01:00
Henrik Kurelid 096edfbf16 firedtv: fix returned struct for ca_info
The SystemId of the ca_info message was filled with garbage.
It now returns what the card returns.

Signed-off-by: Henrik Kurelid <henrik@kurelid.se>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2009-02-24 14:51:28 +01:00
Stefan Richter 8ae83cdf32 firedtv: cleanups and minor fixes
Combination of the following changes:

Sun, 2 Nov 2008 13:45:00 +0100 (CET)
firedtv: increase FCP frame length for DVB-S2 tune QSPK

    The last three bytes didn't go out to the wire.
    Effect of the fix not yet tested.

Sun, 2 Nov 2008 13:45:00 +0100 (CET)
firedtv: replace mdelay by msleep

    These functions can sleep (and in fact sleep for the duration of a whole
    FCP transaction).  Hence msleep is more appropriate here.

Sun, 2 Nov 2008 13:45:00 +0100 (CET)
firedtv: trivial reorganization in avc_api

    Reduce nesting level by factoring code out of avc_tuner_dsd() into
    helper functions.

Sun, 2 Nov 2008 13:45:00 +0100 (CET)
firedtv: trivial cleanups in avc_api

    Use dev_err(), no CamelCase function names, adjust comment style, put
    #if 0 around unused code and add FIXME comments, standardize on
    lower-case hexadecimal constants, use ALIGN() for some frame length
    calculations, make a local function static...

    The code which writes FCP command frames and reads FCP response frames
    is not yet brought into canonical kernel coding style because this
    involves changes of typedefs (on-the-wire bitfields).

Sun, 2 Nov 2008 13:45:00 +0100 (CET)
firedtv: don't retry oPCR updates endlessly

    In the theoretical case that the target node wasn't handling the lock
    transactions as expected or there was continued interference by other
    initiating nodes, these functions wouldn't return for ages.

Sun, 2 Nov 2008 13:45:00 +0100 (CET)
firedtv: remove bitfield typedefs from cmp, fix for big endian CPUs

    Use macros/ inline functions/ standard byte order accessors to read and
    write oPCR register values (big endian bitfields, on-the-wire data).
    The new code may not be the ultimate optimum, but it doesn't occur in a
    hot path.

    This fixes the CMP code for big endian CPUs.  So far I tested it only on
    a little endian CPU though.

    For now, include <asm/byteorder.h> instead of <linux/byteorder.h>
    because drivers/ieee1394/*.h also include the former.  I will fix this
    in drivers/ieee1394 and firedtv later.

Sun, 2 Nov 2008 13:45:00 +0100 (CET)
firedtv: trivial cleanups in cmp

    Reduce nesting level by means of early exit and goto.
    Remove obsolete includes, use dev_err(), no CamelCase function names...

Sun, 2 Nov 2008 13:45:00 +0100 (CET)
firedtv: trivial cleanups in firesat-ci

    Whitespace, variable names, comment style...

    Also, use dvb_generic_open() and dvb_generic_release() directly as
    our hooks in struct file_operations because firedtv's wrappers merely
    called these generic functions.

Sun, 2 Nov 2008 13:45:00 +0100 (CET)
firedtv: remove CA debug code

    This looks like it is not necessary to have available for endusers who
    cannot patch kernels for bug reporting and tests of fixes.

Sun, 2 Nov 2008 13:45:00 +0100 (CET)
firedtv: remove AV/C debug code

    This looks like it is not necessary to have available for endusers who
    cannot patch kernels for bug reporting and tests of fixes.

Sun, 2 Nov 2008 13:45:00 +0100 (CET)
firedtv: remove various debug code

    Most of this was already commented out.  And that which wasn't is not
    relevant in normal use.

Mon, 29 Sep 2008 19:22:48 +0200 (CEST)
firedtv: register input device as child of a FireWire device

    Instead of one virtual input device which exists for the whole lifetime
    of the driver and receives events from all connected FireDTVs, register
    one input device for each firedtv device.  These input devices will show
    up as children of the respective firedtv devices in the sysfs hierarchy.

    However, the implementation falls short because of a bug in userspace:
    Udev's path_id script gets stuck with 100% CPU utilization, maybe
    because of an assumption about the maximum ieee1394 device hierarchy
    depth.

    To avoid this bug, we use the fw-host device instead of the proper
    unit_directory device as parent of the input device.

    There is hope that the port to the new firewire stack won't be inhibited
    by this userspace bug because there are no fw-host devices there.

Mon, 29 Sep 2008 19:21:52 +0200 (CEST)
firedtv: fix string comparison and a few sparse warnings

    Sparse found a bug:
    	while ((kv_buf + kv_len - 1) == '\0')
    should have been
    	while (kv_buf[kv_len - 1] == '\0')
    We fix it by a better implementation without a temporary copy.

    Also fix sparse warnings of 0 instead of NULL and signedness mismatches.

Mon, 29 Sep 2008 19:21:20 +0200 (CEST)
firedtv: remove unused struct members

    and redefine an int as a bool.

Mon, 29 Sep 2008 19:20:36 +0200 (CEST)
firedtv: fix initialization of dvb_frontend.ops

    There was a NULL pointer reference if no dvb_frontend_info was found.

    Also, don't directly assign struct typed values to struct typed
    variables.  Instead write out assignments to individual strcut members.
    This reduces module size by about 1 kB.

Mon, 29 Sep 2008 19:19:41 +0200 (CEST)
firedtv: remove unused dual subunit code from initialization

    No FireDTVs with more than one subunit exists, hence simplify the
    initialization for the special case of one subunit.  The driver was able
    to check for more than one subunit but was broken for more than two
    subunits.

    While we are at it, add several missing cleanups after failure, and
    include a few dynamically allocated structures diretly into struct
    firesat instead of allocating them separately.

Mon, 29 Sep 2008 19:19:08 +0200 (CEST)
firedtv: add vendor_id and version to driver match table

    Now that nodemgr was enhanced to match against the root directory's
    vendor ID if there isn't one in the unit directory, use this to
    prevent firedtv to be bound to wrong devices by accident.

    Also add the AV/C software version ID to the match flags for
    completeness; specifier ID and software only make sense as a pair.

Mon, 29 Sep 2008 19:18:30 +0200 (CEST)
firedtv: use hpsb_node_read(), _write(), _lock()

    because they are simpler and treat the node generation more correctly.
    While we are at it, clean up and simplify surrounding code.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2009-02-24 14:51:28 +01:00
Stefan Richter 00fc3072e4 ieee1394: remove superfluous assertions
hpsb_read, hpsb_write, hpsb_lock are sleeping functions which nobody is
in danger to use in atomic context.  Besides, in_interrupt does not
cover all types of atomic context.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2009-02-24 14:51:28 +01:00
Stefan Richter 9c939e4df4 ieee1394: inherit ud vendor_id from node vendor_id
While Module_Vendor_ID in the configuration ROM's root directory is
mandatory, there often aren't vendor IDs in unit directories.  This
affects the new firedtv driver which is meant to be auto-loaded and
matched only for vendor-specific devices.

We now always copy ne->vendor_id into ud->vendor_id before we scan a
unit directory (and fill in a possibly present vendor ID from there).
This way, the root directory's vendor ID is used as fallback in the
"uevent" environment for modprobe'ing per module alias when a node was
plugged in, and in the driver match routine when protocol drivers are
bound to unit directories.  It will however not be used as sysfs
attribute of a unit directory device.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2009-02-24 14:51:27 +01:00
Stefan Richter b33fdd6ca5 ieee1394: add hpsb_node_read() and hpsb_node_lock()
These will be used by the firedtv driver.  Like hpsb_node_write() they
are much better APIs for high-level drivers than hpsb_write() and its
siblings --- easier to use correctly and also terser.

Unlike hspb_node_write(), the two new functions will only be used by
one call site.  Hence make them static inline instead of exported
symbols.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2009-02-24 14:51:27 +01:00
Stefan Richter 29f8ea8ab0 ieee1394: use correct barrier types between accesses of nodeid and generation
A compiler barrier (explicit on the read side, implicit on the write
side) is not quite enough for what has to be accomplished here.  Use
hardware memory barriers on systems which need them.

(Of course a full fix of generation handling would require much more
than this.  The ieee1394 core's bus generation counter had to be tied to
the controller's bus generation counter; cf. Kristian's stack.  It's
just that I have other current business with the code around these
barrier()s, so why not do at least this small fix.)

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2009-02-24 14:51:26 +01:00
Stefan Richter 612262a533 firesat: copyrights, rename to firedtv, API conversions, fix remote control input
Combination of the following changes:

Tue, 26 Aug 2008 00:17:30 +0200 (CEST)
firedtv: fix remote control input

    and update the scancode-to-keycode mapping to a current model.  Per
    default, various media key keycodes are emitted which closely match what
    is printed on the remote.  Userland can modify the mapping by means of
    evdev ioctls.  (Not tested.)

    The old scancode-to-keycode mapping is left in the driver but cannot be
    modified by ioctls.  This preserves status quo for old remotes.

Tue, 26 Aug 2008 00:11:28 +0200 (CEST)
firedtv: replace tasklet by workqueue job

    Non-atomic context is a lot nicer to work with.

Sun, 24 Aug 2008 23:30:00 +0200 (CEST)
firedtv: move some code back to ieee1394 core

    Partially reverts "ieee1394: remove unused code" of Linux 2.6.25.

Sun, 24 Aug 2008 23:29:30 +0200 (CEST)
firedtv: replace semaphore by mutex

    firesat->avc_sem and ->demux_sem have been used exactly like a mutex.
    The only exception is the schedule_remotecontrol tasklet which did a
    down_trylock in atomic context.  This is not possible with
    mutex_trylock; however the whole remote control related code is
    non-functional anyway at the moment.  This should be fixed eventually,
    probably by turning the tasklet into a worqueue job.

    Convert everything else from semaphore to mutex.

    Also rewrite a few of the affected functions to unlock the mutex at a
    single exit point, instead of in several branches.

Sun, 24 Aug 2008 23:28:45 +0200 (CEST)
firedtv: some header cleanups

    Unify #ifndef/#define/#endif guards against multiple inclusion.
    Drop extern keyword from function declarations.
    Remove #include's into header files where struct declarations suffice.

    Remove unused ohci1394 interface and related unused ieee1394 interfaces.

    Add a few missing #include's and remove a few apparently obsolete ones.
    Sort them alphabetically.

Sun, 24 Aug 2008 23:27:45 +0200 (CEST)
firedtv: nicer registration message and some initialization fixes

    Print the correct name in dvb_register_adapter().

    While we are at it, replace two switch cascades by one for loop, remove
    a superfluous member of struct firesat and of two unused arguments of
    AVCIdentifySubunit(), and fix bogus kfree's in firesat_dvbdev_init().

Tue, 26 Aug 2008 14:24:17 +0200 (CEST)
firesat: rename to firedtv

    Suggested by Andreas Monitzer.  Besides DVB-S/-S2 receivers, the driver
    also supports DVB-C and DVB-T receivers, hence the previous project name
    is too narrow now.

    Not yet done:  Rename source directory, files, types, variables...

Sun, 24 Aug 2008 23:26:23 +0200 (CEST)
firesat: add missing copyright notes

    Reported by Andreas Monitzer and Christian Dolzer.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2009-02-24 14:51:26 +01:00
Henrik Kurelid 81c67b7f82 firesat: avc resend
- Add resending of AVC message to the card if no answer is received
  - Replace the homebrewed event_wait function with a standard wait queue
  - Clean up of log/error messages
  - Increase debug level of avc communication

Signed-off-by: Henrik Kurelid <henrik@kurelid.se>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2009-02-24 14:51:26 +01:00
Henrik Kurelid df4846c352 firesat: update isochronous interface, add CI support
I have finally managed to get the CI support for the card working. The
implementation is a bare minimum to get encrypted channels to work in
kaffeine. It works fine with my T/CI card. Now and then I get an AVC
timeout and have to retune a channel in order to get it to work. Once
the CAM seemed to hang so I needed to remove and insert it again. I.e.
there are a number of glitches.

The latest version contains the following changes:

  - Implemented the new hpsb iso interface so that data can be received
    from the card
  - Reduced some timers for demux setup which caused scanning to timeout
  - Added possibility to unload driver
  - Added support for getting C/N ratio
  - Added two debug parameters to the driver; ca_debug and
    avc_comm_debug.
  - Added CI support that works for me in kaffeine
  - Started working on CI MMI support. It now supports:
      o Enter menu
      o Receiving MMI objects
  - Added support for 64-bit platforms
  - Corrected DVB-C modulations problems

Signed-off-by: Henrik Kurelid <henrik@kurelid.se>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de> (rebased, whitespace)
2009-02-24 14:51:26 +01:00
Ben Backx 2c22861459 firesat: add DVB-S support for DVB-S2 devices
...so S2 owners now can at least watch DVB-S channels in linux.

Signed-off-by: Ben Backx <ben@bbackx.com>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2009-02-24 14:51:25 +01:00
Ben Backx f1bbb43a66 firesat: fix DVB-S2 device recognition
This only makes sure that a DVB-S2 device is really recognized as a S2,
nothing else is added yet. It's using the string containing the model
that is stored in the configuration ROM, the older version was using
some hardware revision dependent part of the ROM.

Signed-off-by: Ben Backx <ben@bbackx.com>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2009-02-24 14:51:25 +01:00
Greg Kroah-Hartman c81c8b68b4 DVB: add firesat driver
Original code written by Christian Dolzer <c.dolzer@digital-everywhere.com>

Cleaned up by Greg.

Major cleanup and reorg by Manu Abraham <manu@linuxtv.org>

Additions also by Ben Backx <ben@bbackx.com>

Cc: Christian Dolzer <c.dolzer@digital-everywhere.com>
Cc: Andreas Monitzer <andy@monitzer.com>
Cc: Manu Abraham <manu@linuxtv.org>
Cc: Fabio De Lorenzo <delorenzo.fabio@gmail.com>
Cc: Robert Berger <robert.berger@reliableembeddedsystems.com>
Signed-off-by: Ben Backx <ben@bbackx.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

Added missing dependency to dvb/firesat/Kconfig,
Reported-by: Randy Dunlap <randy.dunlap@oracle.com>

Tweaked dvb/Makefile.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2009-02-24 14:51:25 +01:00
Linus Torvalds f7e603ad8f Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6:
  net: amend the fix for SO_BSDCOMPAT gsopt infoleak
  netns: build fix for net_alloc_generic
2009-02-23 20:29:21 -08:00
Krzysztof Sachanowicz cac711211a proc: proc_get_inode should de_put when inode already initialized
de_get is called before every proc_get_inode, but corresponding de_put is
called only when dropping last reference to an inode. This might cause
something like
remove_proc_entry: /proc/stats busy, count=14496
to be printed to the syslog.

The fix is to call de_put in case of an already initialized inode in
proc_get_inode.

Signed-off-by: Krzysztof Sachanowicz <analyzer1@gmail.com>
Tested-by: Marcin Pilipczuk <marcin.pilipczuk@gmail.com>
Acked-by: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-02-23 18:25:32 -08:00
Jesse Barnes 226485e9a9 i915: suspend/resume interrupt state
In the KMS case, enter/leavevt won't fix up the interrupt handler for
us, so we need to do it at suspend/resume time.  Make sure we don't fail
the resume if the chip is hung either.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-02-23 17:23:57 -08:00
Karsten Wiese 6c0594a306 Fix an oops in i915_gem_retire_requests()
dev_priv->hw_status_page can be NULL, if i915_gem_retire_requests()
is called from i915_gem_busy_ioctl().

Signed-off-by Karsten Wiese <fzu@wemgehoertderstaat.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-02-23 17:14:47 -08:00
Eugene Teo 50fee1dec5 net: amend the fix for SO_BSDCOMPAT gsopt infoleak
The fix for CVE-2009-0676 (upstream commit df0bca04) is incomplete. Note
that the same problem of leaking kernel memory will reappear if someone
on some architecture uses struct timeval with some internal padding (for
example tv_sec 64-bit and tv_usec 32-bit) --- then, you are going to
leak the padded bytes to userspace.

Signed-off-by: Eugene Teo <eugeneteo@kernel.sg>
Reported-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-02-23 15:38:41 -08:00
Clemens Noss ebe47d47b7 netns: build fix for net_alloc_generic
net_alloc_generic was defined in #ifdef CONFIG_NET_NS, but used
unconditionally. Move net_alloc_generic out of #ifdef.

Signed-off-by: Clemens Noss <cnoss@gmx.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-02-23 15:37:35 -08:00
Kyle McMartin 954a8b8162 x86, doc: fix references to Documentation/x86/i386/boot.txt
Impact: Documentation fix

The amazing dancing boot.txt file has jumped places again.  It should
never have been in Documentation/x86/i386, since it never was
32-bit-specific, but it unfortunately ended up there for a while.

Signed-off-by: Kyle McMartin <kyle@redhat.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2009-02-23 15:11:37 -08:00
Linus Torvalds ea5a42c22e Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  crypto: ahash - Fix digest size in /proc/crypto
2009-02-23 14:38:20 -08:00
Linus Torvalds d38e84ee39 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6:
  netns: fix double free at netns creation
  veth : add the set_mac_address capability
  sunlance: Beyond ARRAY_SIZE of ib->btx_ring
  sungem: another error printed one too early
  ISDN: fix sc/shmem printk format warning
  SMSC: timeout reaches -1
  smsc9420: handle magic field of ethtool_eeprom
  sundance: missing parentheses?
  smsc9420: fix another postfixed timeout
  wimax/i2400m: driver loads firmware v1.4 instead of v1.3
  vlan: Update skb->mac_header in __vlan_put_tag().
  cxgb3: Add support for PCI ID 0x35.
  tcp: remove obsoleted comment about different passes
  TG3: &&/|| confusion
  ATM: misplaced parentheses?
  net/mv643xx: don't disable the mib timer too early and lock properly
  net/mv643xx: use GFP_ATOMIC while atomic
  atl1c: Atheros L1C Gigabit Ethernet driver
  net: Kill skb_truesize_check(), it only catches false-positives.
  net: forcedeth: Fix wake-on-lan regression
2009-02-23 14:36:05 -08:00
Stas Sergeev bda3a89745 x86: minor cleanup in the espfix code
Impact: Cleanup

Checkin be44d2aabc eliminates the use of
a 16-bit stack for espfix.  However, at least one instruction remained
that only operated on the low 16 bits of %esp.

This is not a bug per se because the kernel stack is always an aligned
4K or 8K block.  Therefore it cannot cross 64K boundaries; this code,
in fact, relies strictly on that fact.

However, it's a lot cleaner (and, for that matter, smaller) to operate
on the entire 32-bit register.

Signed-off-by: Stas Sergeev <stsp@aknet.ru>
CC: Zachary Amsden <zach@vmware.com>
CC: Chuck Ebbert <cebbert@redhat.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2009-02-23 11:34:04 -08:00
Yinghai Lu ecda06289f x86: check mptable physptr with max_low_pfn on 32bit
Impact: fix early crash on LinuxBIOS systems

Kevin O'Connor reported that Coreboot aka LinuxBIOS tries to put
mptable somewhere very high, well above max_low_pfn (below which
BIOSes generally put the mptable), causing a panic.

The BIOS will probably be changed to be compatible with older
Linus versions, but nevertheless the MP-spec does not forbid
an MP-table in arbitrary system RAM, so make sure it all
works even if the table is in an unexpected place.

Check physptr with max_low_pfn * PAGE_SIZE.

Reported-by: Kevin O'Connor <kevin@koconnor.net>
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Cc: Stefan Reinauer <stepan@coresystems.de>
Cc: coreboot@coreboot.org
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-23 07:41:31 +01:00
Linus Torvalds 20f4d6c3a2 Linux 2.6.29-rc6 2009-02-22 20:19:40 -08:00
Randy Dunlap af23f573e8 acpi/doc: add missing param value
Add missing parameter value to list of available values
for acpi=<value>.

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-02-22 20:08:55 -08:00
Jan Kara ebd3610b11 ext4: Fix deadlock in ext4_write_begin() and ext4_da_write_begin()
Functions ext4_write_begin() and ext4_da_write_begin() call
grab_cache_page_write_begin() without AOP_FLAG_NOFS. Thus it
can happen that page reclaim is triggered in that function
and it recurses back into the filesystem (or some other filesystem).
But this can lead to various problems as a transaction is already
started at that point. Add the necessary flag.

http://bugzilla.kernel.org/show_bug.cgi?id=11688

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
2009-02-22 21:09:59 -05:00
Linus Torvalds 8310509252 Merge branch 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6
* 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6:
  drm/i915: Add missing mutex_lock(&dev->struct_mutex)
  drm/i915: fix WC mapping in non-GEM i915 code.
  drm/i915: Fix regression in 95ca9d
  drm/i915: Retire requests from i915_gem_busy_ioctl.
  drm/i915: suspend/resume GEM when KMS is active
  drm/i915: Don't let a device flush to prepare buffers clear new write_domains.
  drm/i915: Cut two args to set_to_gpu_domain that confused this tricky path.
2009-02-22 16:26:09 -08:00
Pierre Willenbrock 5004417d84 drm/i915: Add missing mutex_lock(&dev->struct_mutex)
there might be a nicer way to fix this but this is the simplest for now.

Signed-off-by: Pierre Willenbrock <pierre@pirsoft.de>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2009-02-23 10:12:15 +10:00
Jesse Barnes 6fb8858855 drm/i915: fix WC mapping in non-GEM i915 code.
[airlied - taken from mailing list posting]

Signed-off-by: Dave Airlie <airlied@redhat.com>
2009-02-23 10:08:21 +10:00
Chris Wilson bab2d1f653 drm/i915: Fix regression in 95ca9d
The object is dereferenced before the NULL check. Oops.

Fixes http://bugs.freedesktop.org/show_bug.cgi?id=20235

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2009-02-23 10:06:30 +10:00
Eric Anholt f21289b355 drm/i915: Retire requests from i915_gem_busy_ioctl.
This ensures that the user gets the latest information from the hardware
on whether the buffer is busy, potentially reducing the working set of objects
that the user chooses.

Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2009-02-23 10:06:26 +10:00
Jesse Barnes 5669fcacc5 drm/i915: suspend/resume GEM when KMS is active
In the KMS case, we need to suspend/resume GEM as well.  So on suspend, make
sure we idle GEM and stop any new rendering from coming in, and on resume,
re-init the framebuffer and clear the suspended flag.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2009-02-23 10:06:23 +10:00
Eric Anholt efbeed96f7 drm/i915: Don't let a device flush to prepare buffers clear new write_domains.
The problem was that object_set_to_gpu_domain would set the new write_domains
that are getting set by this batchbuffer, then the accumulated flushes required
for all the objects in preparation for this batchbuffer were posted, and the
brand new write domain would get cleared by the flush being posted.  Instead,
hang on to the new (or old if we're not changing it) value and set it after
the flush is queued.

Results from this noticably included conformance test failures from reads
shortly after writes (where the new write domain had been lost and thus not
flushed and waited on), but is a suspected cause of hangs in some apps when
a write domain is lost on a buffer that gets reused for instruction or
commmand state.

Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2009-02-23 10:06:19 +10:00
Eric Anholt 8b0e378a20 drm/i915: Cut two args to set_to_gpu_domain that confused this tricky path.
While not strictly required, it helped while thinking about the following
change.  This change should be invariant.

Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2009-02-23 10:06:15 +10:00
Jeremy Fitzhardinge 0d3a9cf5ab acpi: add some missing section markers
early_acpi_os_unmap_memory() is an __init function, and
acpi_os_unmap_memory() is allowed to access an __init function
until acpi_gbl_permanent_mmap is set up.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Cc: Len Brown <len.brown@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-23 00:10:47 +01:00
Ingo Molnar 8e6dafd6c7 x86: refactor x86_quirks support
Impact: cleanup

Make x86_quirks support more transparent. The highlevel
methods are now named:

  extern void x86_quirk_pre_intr_init(void);
  extern void x86_quirk_intr_init(void);

  extern void x86_quirk_trap_init(void);

  extern void x86_quirk_pre_time_init(void);
  extern void x86_quirk_time_init(void);

This makes it clear that if some platform extension has to
do something here that it is considered ... weird, and is
discouraged.

Also remove arch_hooks.h and move it into setup.h (and other
header files where appropriate).

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-23 00:08:11 +01:00
Ingo Molnar d85a881d78 x86: remove various unused subarch hooks
Impact: remove dead code

Remove:

 - pre_setup_arch_hook()
 - mca_nmi_hook()

If needed they can be added back via an x86_quirk handler.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-23 00:06:49 +01:00
Ingo Molnar 965c7ecaf2 x86: remove the Voyager 32-bit subarch
Impact: remove unused/broken code

The Voyager subarch last built successfully on the v2.6.26 kernel
and has been stale since then and does not build on the v2.6.27,
v2.6.28 and v2.6.29-rc5 kernels.

No actual users beyond the maintainer reported this breakage.
Patches were sent and most of the fixes were accepted but the
discussion around how to do a few remaining issues cleanly
fizzled out with no resolution and the code remained broken.

In the v2.6.30 x86 tree development cycle 32-bit subarch support
has been reworked and removed - and the Voyager code, beyond the
build problems already known, needs serious and significant
changes and probably a rewrite to support it.

CONFIG_X86_VOYAGER has been marked BROKEN then. The maintainer has
been notified but no patches have been sent so far to fix it.

While all other subarchs have been converted to the new scheme,
voyager is still broken. We'd prefer to receive patches which
clean up the current situation in a constructive way, but even in
case of removal there is no obstacle to add that support back
after the issues have been sorted out in a mutually acceptable
fashion.

So remove this inactive code for now.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-23 00:54:01 +01:00
Paul Moore 09c50b4a52 selinux: Fix the NetLabel glue code for setsockopt()
At some point we (okay, I) managed to break the ability for users to use the
setsockopt() syscall to set IPv4 options when NetLabel was not active on the
socket in question.  The problem was noticed by someone trying to use the
"-R" (record route) option of ping:

 # ping -R 10.0.0.1
 ping: record route: No message of desired type

The solution is relatively simple, we catch the unlabeled socket case and
clear the error code, allowing the operation to succeed.  Please note that we
still deny users the ability to override IPv4 options on socket's which have
NetLabel labeling active; this is done to ensure the labeling remains intact.

Signed-off-by: Paul Moore <paul.moore@hp.com>
Signed-off-by: James Morris <jmorris@namei.org>
2009-02-23 10:05:55 +11:00
Paul Moore 586c250037 cipso: Fix documentation comment
The CIPSO protocol engine incorrectly stated that the FIPS-188 specification
could be found in the kernel's Documentation directory.  This patch corrects
that by removing the comment and directing users to the FIPS-188 documented
hosted online.  For the sake of completeness I've also included a link to the
CIPSO draft specification on the NetLabel website.

Thanks to Randy Dunlap for spotting the error and letting me know.

Signed-off-by: Paul Moore <paul.moore@hp.com>
Signed-off-by: James Morris <jmorris@namei.org>
2009-02-23 10:05:54 +11:00
Linus Torvalds 683fdc5fe5 Merge branch 'core/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'core/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  PM: Split up sysdev_[suspend|resume] from device_power_[down|up], fix
2009-02-22 13:26:30 -08:00
Ingo Molnar 0f99fed460 PM: Split up sysdev_[suspend|resume] from device_power_[down|up], fix
Impact: module build fix

Fix:

 ERROR: "sysdev_resume" [arch/x86/kernel/apm.ko] undefined!
 ERROR: "sysdev_suspend" [arch/x86/kernel/apm.ko] undefined!

As these APIs are now used by the APM driver, which can be built
as a module.

Also fix a few extra (and inconsistent) newlines in comment blocks
preceding these functions.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-22 22:09:33 +01:00
Randy Dunlap f7f84f38cd docbook: split kernel-api for device-drivers
The kernel-api docbook was much larger than any of the others,
so processing it took longer and needed some docbook extras in
some cases, so split it into kernel-api (infrastructure etc.)
and device drivers/device subsystems.  This allows these docbooks
to be generated in parallel.  (This reduced the docbook processing
time on my 4-proc system with make -j4 from about 5min:16sec to
about 2min:01sec.)

The chapters that were moved from kernel-api to device-drivers are:

Driver Basics
Device drivers infrastructure
Parallel Port Devices
Message-based devices
Sound Devices
16x50 UART Driver
Frame Buffer Library
Input Subsystem
Serial Peripheral Interface (SPI)
I2C and SMBus Subsystem

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-02-22 12:21:46 -08:00
Ravikiran G Thirumalai 8425091ff8 x86: improve the help text of X86_EXTENDED_PLATFORM
Change the CONFIG_X86_EXTENDED_PLATFORM help text to display the
32bit/64bit extended platform list. This is as suggested by Ingo.

Signed-off-by: Ravikiran Thirumalai <kiran@scalex86.org>
Cc: shai@scalex86.org
Cc: "Benzi Galili (Benzi@ScaleMP.com)" <benzi@scalemp.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-22 20:21:31 +01:00
Ingo Molnar fc6fc7f1b1 Merge branch 'linus' into x86/apic
Conflicts:
	arch/x86/mach-default/setup.c

Semantic conflict resolution:
	arch/x86/kernel/setup.c

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-22 20:05:19 +01:00
Rafael J. Wysocki 770824bdc4 PM: Split up sysdev_[suspend|resume] from device_power_[down|up]
Move the sysdev_suspend/resume from the callee to the callers, with
no real change in semantics, so that we can rework the disabling of
interrupts during suspend/hibernation.

This is based on an earlier patch from Linus.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-02-22 10:33:44 -08:00