V4L/DVB (12845): tm6000: more buffer handling fixes

Before this patch, we were writing outside vmalloced buffer

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12844): tm6000: avoid writing on a floating pointer

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12843): tm6000: cleanup: remove a test debug code

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12842): tm6000: avoid kernel panic while retrieving the filling buffer

Instead of storing next buf on a temp var, saved over URB
processing, restore it using get_next_buf.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12841): tm6000: Fix compilation with newer v4l2-dev API

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12840): tm6000: add support for HVR900H

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12839): tm6000: Another trial to fix analog streaming

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12838): tm6000: Fix color support on tm6010

TM6010 uses some different registers for format support.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12837): tm6000: make tree buildable

Signed-off-by: Maykel Moya <moya@infomed.sld.cu>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12836): tm6000: revert to an old way to copy video

The new way is causing machine hangups. This one works.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12835): tm6000: Cleanups to work like em28xx-video

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12834): tm6000: Fix two warnings

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12833): tm6000: add a proper init code for -alsa

Uses about the same initialization code as defined on usbaudio.c.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12832): tm6000: allow compilation of tm6000-alsa module

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12831): tm6000: Convert cx88-alsa into tm6000-alsa

- Remove cx88 specific setups;
- Add tm6000 specific start/stop commands;
- Do CodingStyle cleanups.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12830): tm6000: copy cx88-alsa as tm6000-alsa

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12829): tm6000: several changes on usb preparation trying to avoid -EPROTO errors

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12828): tm6000: fixes several CodingStyle and do some cleanups

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12827): tm6000: fix image hangs

A previous committed patch hanged image output. This patch corrects this issue.
It also warrants that buffer is updated for each frame0+frame1 frame set.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12826): tm6000: adds 10ms delay between two consecutive i2c write ops

tm6000 original driver seems to use a delay between two consecutive i2c write
operations.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12825): tm6000: I2C reading operations is not reliable on tm6000

tm6000 sometimes can't read from i2c, but this is currently required for
tuner-xc2028 to work.

This patch adds an option to tuner-xc2028 to not rely on i2c reading.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12824): tuner-xc2028: adds an option to send i2c data on slower speed

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12823): tm6000: Uses another method for handling incomplete packets

This requires a little more memory, and some memcpy to work, but the logic is
simpler than the previous method.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12822): tm6000: Add support for tm6010

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12821): tm6000: update USB request names and clean up i2c routine

Update the descriptions of the USB request types so that they match what
we now know they do.

Rework the i2c_xfer function so that it is more explicit what sort of I2C
transfers it is that the tm6000 can't perform.

Signed-off-by: Chris Pascoe <c.pascoe@itee.uq.edu.au>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12820): tm6000: fix i2c readings

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12819): tm6000: mts parameter has changed on tuner-xc2028.c

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12818): tm6000: Use dvb_frontend_detach instead of single symbol_put commands

Thanks to Mike Krufky for pointed that one out. Also include some minor
cleanups.

Signed-off-by: Michel Ludwig <michel.ludwig@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12817): tm6000: add a missing symbol_put

Signed-off-by: Michel Ludwig <michel.ludwig@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12816): tm6000: fix tm6000 attach method and fix a few CodingStyles

Signed-off-by: Michel Ludwig <michel.ludwig@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12815): tm6000: follow videobuf API changes

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12814): tm6000: fix eeprom reading on tm6000

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12813): tm6000: all read messages should use prev_reg

read messages with length>1 where using the wrong register.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12812): tm6000: fix build dependencies for tm6000 and tuner-xc2028

Signed-off-by: Michel Ludwig <michel.ludwig@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12811): tm6000: a few registers is needed from the sif/noif setings

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12810): tm6000: Avoid sending xc3028 setups for other tuners

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12809): tm6000: Remove an old hack

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12808): tm6000: Move analog tv standards to tm6000-stds

tm5600/6000/6010 requires a large config table for video standards. Better to
move this to their own file.

Also added register settings for tm6010 (needs testing.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12807): tm6000: Properly select xc2028 parameters

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12806): tm6000: Select VIDEO_TUNER for tm6000 devices

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12805): tm6000: Fix a memory leak at tm6000-video

if a transfer buffer allocation fails, the last allocated urb is leaked
(it hasn't been stored in dev->urb[] yet so tm6000_uninit_isoc misses
it). The patch also includes a small typo fix.

Thanks to Florin Malita <fmalita@gmail.com> for pointing this.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12804): tm6000: Build the module properly if CONFIG_VIDEO_TM6000_DVB is selected.

Signed-off-by: Michel Ludwig <michel.ludwig@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12803): tm6000: make tm6000_devused static

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12802): tm6000: adds command to enable audio output at tm6000

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12801): tm6000: Add support for ADSTech Mini Dual TV (PTV-339).

Signed-off-by: Michel Ludwig <michel.ludwig@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12800): tm6000: fix tm6000 analog video buffer handling

Previously, there were no sync between video buffer filling and received
URBs. So, the presented image were a mix of frame and frame-1. Now, a
filled buffer should contain only data for that frame.

allocates a maximum of 64 KB per each URB area. This fixed two bugs:

- Sometimes, there were no available continuos block of about 1 MB;
- Image weren't not properly updated, since parts of the URBs aren't
  updated.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12799): tm6000: avoid troubles if a header is broken on separate URBs

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12798): tm6000: Split header processing from header find

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12797): tm6000: Allow selecting audio bitrate

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12796): tm6000: Add a hack for PAL standards

The common code is not properly working. This hack should do the work
for now.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12795): tm6000: Fix buffering size

At the first time an application were called, resolutions were wrong.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12794): tm6000: handle also PAL/SECAM resolutions

Fix the resolutions for 625 line video standards (european PAL/SECAM)

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12793): tm6000: On some kernels, eeprom reading were generating a bug

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12791): tm6000: fix poll() method

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12790): tm6000: check for errors on usb->status

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12789): tm6000: fix DVB dependency

Compilation were causing errors, if DVB_CORE weren't selected.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12788): tm6000: Add initial DVB-T support

Signed-off-by: Michel Ludwig <michel.ludwig@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12786): tm6000: Remove code dealing with the ZL10353

Remove code dealing with the ZL10353 as this is all handled by the ZL10353
module.

Signed-off-by: Michel Ludwig <michel.ludwig@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12785): tm6000: allow user gpio address for tuner reset

Modify tuner_callback to user the device's GPIO address field
for tuner reset.

Signed-off-by: Michel Ludwig <michel.ludwig@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12784): tm6000: Some cleanups at the driver

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12783): tm6000: add xc2028/3028 to dvb

Add experimental DVB frontend tuner interface to xc2028/3028

Signed-off-by: Michel Ludwig <michel.ludwig@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12782): tm6000: Correct some device capabilities

Add tuner reset GPIO and demodulator address fields to the tm6000_core
struct.

Signed-off-by: Michel Ludwig <michel.ludwig@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12781): tm6000: Start adding support for GPIO device-specific parameters

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12780): tm6000: Improve handling of SMBus Write Byte commands followed by a read command.

SMBus Write Byte commands followed by a read command on the same I2C
address are not sent out to the chip as they wouldn't have any effect.

Signed-off-by: Michel Ludwig <michel.ludwig@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12779): tm6000: Correct dev init & Add general USB ctrl msg pause

Add GPIO4 reset, which is required to make DVB-T work with the Freecom
stick.
Add a general 5 ms pause to the "tm6000_read_write_usb" method.

Signed-off-by: Michel Ludwig <michel.ludwig@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12778): tm6000: Fix SMBus Read Byte command

Signed-off-by: Michel Ludwig <michel.ludwig@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12777): tm6000: Add support for Freecom Hybrid Stick / Moka DVB-T Receiver Dual

Signed-off-by: Michel Ludwig <michel.ludwig@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12776): tm6000: decrement users count

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12775): tm6000: fix usb_submit_urb to be called inside interrupt context

Signed-off-by: Michel Ludwig <michel.ludwig@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12774): tm6000: fix module load/unload

Signed-off-by: Michel Ludwig <michel.ludwig@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12773): tm6000: fix module unregister

Signed-off-by: Michel Ludwig <michel.ludwig@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12772): tm6000: fix module load/unload

Signed-off-by: Michel Ludwig <michel.ludwig@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB (12770): Add tm6000 driver to staging tree

Adds a driver for Trident TV Master tm5600/tm6000 chips.

Those USB devices are usually found with a Xceive xc2028/xc3028
tuner, although the firmware seems to be modified to work with
those chips on some older devices.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

Linus 2.6.34

Merge git://git./linux/kernel/git/davem/net-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6:
  rtnetlink: make SR-IOV VF interface symmetric
  sctp: delete active ICMP proto unreachable timer when free transport
  tcp: fix MD5 (RFC2385) support

Merge branch 'upstream' of git://ftp.linux-mips.org/upstream-linus

* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus:
  MIPS: Oprofile: Fix Loongson irq handler
  MIPS: N32: Use compat version for sys_ppoll.
  MIPS FPU emulator: allow Cause bits of FCSR to be writeable by ctc1

rtnetlink: make SR-IOV VF interface symmetric

Now we have a set of nested attributes:

  IFLA_VFINFO_LIST (NESTED)
    IFLA_VF_INFO (NESTED)
      IFLA_VF_MAC
      IFLA_VF_VLAN
      IFLA_VF_TX_RATE

This allows a single set to operate on multiple attributes if desired.
Among other things, it means a dump can be replayed to set state.

The current interface has yet to be released, so this seems like
something to consider for 2.6.34.

Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

sctp: delete active ICMP proto unreachable timer when free transport

transport may be free before ICMP proto unreachable timer expire, so
we should delete active ICMP proto unreachable timer when transport
is going away.

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Acked-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

tcp: fix MD5 (RFC2385) support

TCP MD5 support uses percpu data for temporary storage. It currently
disables preemption so that same storage cannot be reclaimed by another
thread on same cpu.

We also have to make sure a softirq handler wont try to use also same
context. Various bug reports demonstrated corruptions.

Fix is to disable preemption and BH.

Reported-by: Bhaskar Dutta <bhaskie@gmail.com>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

MIPS: Oprofile: Fix Loongson irq handler

    The interrupt enable bit for the performance counters is in the Control
    Register $24, not in the counter register.
    loongson2_perfcount_handler(), we need to use

Reported-by: Xu Hengyang <hengyang@mail.ustc.edu.cn>
Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Cc: linux-mips@linux-mips.org
    Patchwork: http://patchwork.linux-mips.org/patch/1198/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
---

MIPS: N32: Use compat version for sys_ppoll.

    The sys_ppoll() takes struct 'struct timespec'. This is different for the
    N32 and N64 ABIs. Use the compat version to do the proper conversions.

Signed-off-by: David Daney <ddaney@caviumnetworks.com>
    To: linux-mips@linux-mips.org
    Patchwork: http://patchwork.linux-mips.org/patch/1210/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
---

MIPS FPU emulator: allow Cause bits of FCSR to be writeable by ctc1

    In the FPU emulator code of the MIPS, the Cause bits of the FCSR register
    are not currently writeable by the ctc1 instruction.  In odd corner cases,
    this can cause problems.  For example, a case existed where a divide-by-zero
    exception was generated by the FPU, and the signal handler attempted to
    restore the FPU registers to their state before the exception occurred.  In
    this particular setup, writing the old value to the FCSR register would
    cause another divide-by-zero exception to occur immediately.  The solution
    is to change the ctc1 instruction emulator code to allow the Cause bits of
    the FCSR register to be writeable.  This is the behaviour of the hardware
    that the code is emulating.

    This problem was found by Shane McDonald, but the credit for the fix goes
    to Kevin Kissell.  In Kevin's words:

    I submit that the bug is indeed in that ctc_op:  case of the emulator.  The
    Cause bits (17:12) are supposed to be writable by that instruction, but the
    CTC1 emulation won't let them be updated by the instruction.  I think that
    actually if you just completely removed lines 387-388 [...] things would
    work a good deal better.  At least, it would be a more accurate emulation of
    the architecturally defined FPU.  If I wanted to be really, really pedantic
    (which I sometimes do), I'd also protect the reserved bits that aren't
    necessarily writable.

Signed-off-by: Shane McDonald <mcdonald.shane@gmail.com>
    To: anemo@mba.ocn.ne.jp
    To: kevink@paralogos.com
    To: sshtylyov@mvista.com
    Patchwork: http://patchwork.linux-mips.org/patch/1205/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
---

Merge git://git./linux/kernel/git/mason/btrfs-unstable

* git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable:
  Btrfs: check for read permission on src file in the clone ioctl

lib/btree: fix possible NULL pointer dereference

mempool_alloc() can return null in atomic case.

Signed-off-by: Denis Kirjanov <kirjanov@gmail.com>
Cc: Joern Engel <joern@logfs.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

mmc: at91_mci: modify cache flush routines

As we were using an internal dma flushing routine, this patch changes to
the DMA API flush_kernel_dcache_page().  Driver is able to compile now.

[akpm@linux-foundation.org: flush_kernel_dcache_page() comes before kunmap_atomic()]
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Btrfs: check for read permission on src file in the clone ioctl

The existing code would have allowed you to clone a file that was
only open for writing

Signed-off-by: Chris Mason <chris.mason@oracle.com>

Merge branch 'for-linus' of git://git./linux/kernel/git/viro/vfs-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6:
  JFS: Free sbi memory in error path
  fs/sysv: dereferencing ERR_PTR()
  Fix double-free in logfs
  Fix the regression created by "set S_DEAD on unlink()..." commit

Merge branch 'perf-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  perf record: Add a fallback to the reference relocation symbol

JFS: Free sbi memory in error path

I spotted the missing kfree() while removing the BKL.

[akpm@linux-foundation.org: avoid multiple returns so it doesn't happen again]
Signed-off-by: Jan Blunck <jblunck@suse.de>
Cc: Dave Kleikamp <shaggy@austin.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

fs/sysv: dereferencing ERR_PTR()

I moved the dir_put_page() inside the if condition so we don't dereference
"page", if it's an ERR_PTR().

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

Fix double-free in logfs

iput() is needed *until* we'd done successful d_alloc_root()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

Fix the regression created by "set S_DEAD on unlink()..." commit

1) i_flags simply doesn't work for mount/unlink race prevention;
we may have many links to file and rm on one of those obviously
shouldn't prevent bind on top of another later on.  To fix it
right way we need to mark _dentry_ as unsuitable for mounting
upon; new flag (DCACHE_CANT_MOUNT) is protected by d_flags and
i_mutex on the inode in question.  Set it (with dont_mount(dentry))
in unlink/rmdir/etc., check (with cant_mount(dentry)) in places
in namespace.c that used to check for S_DEAD.  Setting S_DEAD
is still needed in places where we used to set it (for directories
getting killed), since we rely on it for readdir/rmdir race
prevention.

2) rename()/mount() protection has another bogosity - we unhash
the target before we'd checked that it's not a mountpoint.  Fixed.

3) ancient bogosity in pivot_root() - we locked i_mutex on the
right directory, but checked S_DEAD on the different (and wrong)
one.  Noticed and fixed.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

Merge master.kernel.org:/home/rmk/linux-2.6-arm

* master.kernel.org:/home/rmk/linux-2.6-arm:
  ARM: 6126/1: ARM mpcore_wdt: fix build failure and other fixes
  ARM: 6125/1: ARM TWD: move TWD registers to common header
  ARM: 6110/1: Fix Thumb-2 kernel builds when UACCESS_WITH_MEMCPY is enabled
  ARM: 6112/1: Use the Inner Shareable I-cache and BTB ops on ARMv7 SMP
  ARM: 6111/1: Implement read/write for ownership in the ARMv6 DMA cache ops
  ARM: 6106/1: Implement copy_to_user_page() for noMMU
  ARM: 6105/1: Fix the __arm_ioremap_caller() definition in nommu.c

Merge branch 'x86-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86, mrst: Don't blindly access extended config space

profile: fix stats and data leakage

If the kernel is large or the profiling step small, /proc/profile
leaks data and readprofile shows silly stats, until readprofile -r
has reset the buffer: clear the prof_buffer when it is vmalloc()ed.

Signed-off-by: Hugh Dickins <hughd@google.com>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

hughd: update email address

My old address will shut down in a couple of weeks: update the tree.

Signed-off-by: Hugh Dickins <hugh.dickins@tiscali.co.uk>
Signed-off-by: Hugh Dickins <hughd@google.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

x86, mrst: Don't blindly access extended config space

Do not blindly access extended configuration space unless we actively
know we're on a Moorestown platform.  The fixed-size BAR capability
lives in the extended configuration space, and thus is not applicable
if the configuration space isn't appropriately sized.

This fixes booting certain VMware configurations with CONFIG_MRST=y.

Moorestown will add a fake PCI-X 266 capability to advertise the
presence of extended configuration space.

Reported-and-tested-by: Petr Vandrovec <petr@vandrovec.name>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Acked-by: Jacob Pan <jacob.jun.pan@intel.com>
Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
LKML-Reference: <AANLkTiltKUa3TrKR1M51eGw8FLNoQJSLT0k0_K5X3-OJ@mail.gmail.com>

Merge branch 'x86-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86, cacheinfo: Turn off L3 cache index disable feature in virtualized environments
  x86, k8: Fix build error when K8_NB is disabled
  x86, amd: Check X86_FEATURE_OSVW bit before accessing OSVW MSRs
  x86: Fix fake apicid to node mapping for numa emulation

x86, cacheinfo: Turn off L3 cache index disable feature in virtualized environments

When running a quest kernel on xen we get:

BUG: unable to handle kernel NULL pointer dereference at 0000000000000038
IP: [<ffffffff8142f2fb>] cpuid4_cache_lookup_regs+0x2ca/0x3df
PGD 0
Oops: 0000 [#1] SMP
last sysfs file:
CPU 0
Modules linked in:

Pid: 0, comm: swapper Tainted: G        W  2.6.34-rc3 #1 /HVM domU
RIP: 0010:[<ffffffff8142f2fb>]  [<ffffffff8142f2fb>] cpuid4_cache_lookup_regs+0x
2ca/0x3df
RSP: 0018:ffff880002203e08  EFLAGS: 00010046
RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000060
RDX: 0000000000000000 RSI: 0000000000000040 RDI: 0000000000000000
RBP: ffff880002203ed8 R08: 00000000000017c0 R09: ffff880002203e38
R10: ffff8800023d5d40 R11: ffffffff81a01e28 R12: ffff880187e6f5c0
R13: ffff880002203e34 R14: ffff880002203e58 R15: ffff880002203e68
FS:  0000000000000000(0000) GS:ffff880002200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 0000000000000038 CR3: 0000000001a3c000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process swapper (pid: 0, threadinfo ffffffff81a00000, task ffffffff81a44020)
Stack:
 ffffffff810d7ecb ffff880002203e20 ffffffff81059140 ffff880002203e30
<0> ffffffff810d7ec9 0000000002203e40 000000000050d140 ffff880002203e70
<0> 0000000002008140 0000000000000086 ffff880040020140 ffffffff81068b8b
Call Trace:
 <IRQ>
 [<ffffffff810d7ecb>] ? sync_supers_timer_fn+0x0/0x1c
 [<ffffffff81059140>] ? mod_timer+0x23/0x25
 [<ffffffff810d7ec9>] ? arm_supers_timer+0x34/0x36
 [<ffffffff81068b8b>] ? hrtimer_get_next_event+0xa7/0xc3
 [<ffffffff81058e85>] ? get_next_timer_interrupt+0x19a/0x20d
 [<ffffffff8142fa23>] get_cpu_leaves+0x5c/0x232
 [<ffffffff8106a7b1>] ? sched_clock_local+0x1c/0x82
 [<ffffffff8106a9a0>] ? sched_clock_tick+0x75/0x7a
 [<ffffffff8107748c>] generic_smp_call_function_single_interrupt+0xae/0xd0
 [<ffffffff8101f6ef>] smp_call_function_single_interrupt+0x18/0x27
 [<ffffffff8100a773>] call_function_single_interrupt+0x13/0x20
 <EOI>
 [<ffffffff8143c468>] ? notifier_call_chain+0x14/0x63
 [<ffffffff810295c6>] ? native_safe_halt+0xc/0xd
 [<ffffffff810114eb>] ? default_idle+0x36/0x53
 [<ffffffff81008c22>] cpu_idle+0xaa/0xe4
 [<ffffffff81423a9a>] rest_init+0x7e/0x80
 [<ffffffff81b10dd2>] start_kernel+0x40e/0x419
 [<ffffffff81b102c8>] x86_64_start_reservations+0xb3/0xb7
 [<ffffffff81b103c4>] x86_64_start_kernel+0xf8/0x107
Code: 14 d5 40 ff ae 81 8b 14 02 31 c0 3b 15 47 1c 8b 00 7d 0e 48 8b 05 36 1c 8b
 00 48 63 d2 48 8b 04 d0 c7 85 5c ff ff ff 00 00 00 00 <8b> 70 38 48 8d 8d 5c ff
 ff ff 48 8b 78 10 ba c4 01 00 00 e8 eb
RIP  [<ffffffff8142f2fb>] cpuid4_cache_lookup_regs+0x2ca/0x3df
 RSP <ffff880002203e08>
CR2: 0000000000000038
---[ end trace a7919e7f17c0a726 ]---

The L3 cache index disable feature of AMD CPUs has to be disabled if the
kernel is running as guest on top of a hypervisor because northbridge
devices are not available to the guest. Currently, this fixes a boot
crash on top of Xen. In the future this will become an issue on KVM as
well.

Check if northbridge devices are present and do not enable the feature
if there are none.

[ hpa: backported to 2.6.34 ]

Signed-off-by: Frank Arnold <frank.arnold@amd.com>
LKML-Reference: <1271945222-5283-3-git-send-email-bp@amd64.org>
Acked-by: Borislav Petkov <borislav.petkov@amd.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Cc: <stable@kernel.org>

x86, k8: Fix build error when K8_NB is disabled

K8_NB depends on PCI and when the last is disabled (allnoconfig) we fail
at the final linking stage due to missing exported num_k8_northbridges.
Add a header stub for that.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
LKML-Reference: <20100503183036.GJ26107@aftab>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Cc: <stable@kernel.org>