* 'drm-radeon-urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6:
  drm/radeon/kms: disable hdmi audio by default
  drm/radeon/kms: fix for radeon on systems >4GB without hardware iommu
  drm/radeon/kms: set family for use in parser.

The flush_to_ldisc() work entry has special logic to notice when it has
seen the original tail of the data queue, and it avoids continuing the
flush if it sees that _original_ tail rather than the current tail.

This logic can trigger in case somebody is constantly adding new data to
the tty while the flushing is active - and the intent is to avoid
excessive CPU usage while flushing the tty, especially as we used to do
this from a softirq context which made it non-preemptible.

However, since we no longer re-arm the work-queue from within itself
(because that causes other trouble: see commit a5660b41 "tty: fix
endless work loop when the buffer fills up"), this just leads to
possible hung tty's (most easily seen in SMP and with a test-program
that floods a pty with data - nobody seems to have reported this for any
real-life situation yet).

And since the workqueue isn't done from timers and softirq's any more,
it's doubtful whether the CPU useage issue is really relevant any more.
So just remove the logic entirely, and see if anybody ever notices.

Alternatively, we might want to re-introduce the "re-arm the work" for
just this case, but then we'd have to re-introduce the delayed work
model or some explicit timer, which really doesn't seem worth it for
this.
Reported-and-tested-by: NGuillaume Chazarain <guichaz@gmail.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Felipe Balbi <balbi@ti.com>
Cc: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

The current RE'd code causes blank screens and
display problems on a lot of systems.  So disable
it by default for now.  It can still be enabled
by setting the audio parameter to 1.  E.g.:
radeon.audio=1

Fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=38010
https://bugs.freedesktop.org/show_bug.cgi?id=27731
https://bugs.freedesktop.org/show_bug.cgi?id=35970
https://bugs.freedesktop.org/show_bug.cgi?id=26195
and many other reported problems.
Signed-off-by: NAlex Deucher <alexdeucher@gmail.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

On my x86_64 system with >4GB of ram and swiotlb instead of
a hardware iommu (because I have a VIA chipset), the call
to pci_set_dma_mask (see below) with 40bits returns an error.

But it seems that the radeon driver is designed to have
need_dma32 = true exactly if pci_set_dma_mask is called
with 32 bits and false if it is called with 40 bits.

I have read somewhere that the default are 32 bits. So if the
call fails I suppose that need_dma32 should be set to true.

And indeed the patch fixes the problem I have had before
and which I had described here:
http://choon.net/forum/read.php?21,106131,115940Acked-by: NAlex Deucher <alexdeucher@gmail.com>
cc: stable@kernel.org
Signed-off-by: NDave Airlie <airlied@redhat.com>

Wierdly the kms parser never initialised the family, it wasn't really used
much, but the fmt checker patch started using it and it fell over.
Reported-by: NMarkus Trippelsdorf <markus@trippelsdorf.de>
Signed-off-by: NDave Airlie <airlied@redhat.com>

Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  genirq: Ensure we locate the passed IRQ in irq_alloc_descs()
  genirq: Fix descriptor init on non-sparse IRQs
  irq: Handle spurios irq detection for threaded irqs
  genirq: Print threaded handler in spurious debug output

Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86/amd-iommu: Fix boot crash with hidden PCI devices
  x86/amd-iommu: Use only per-device dma_ops
  x86/amd-iommu: Fix 3 possible endless loops

Merge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  sched: Fix/clarify set_task_cpu() locking rules
  lockdep: Fix lock_is_held() on recursion
  sched: Fix schedstat.nr_wakeups_migrate
  sched: Fix cross-cpu clock sync on remote wakeups

* 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6:
  drm/nv40: fall back to paged dma object for the moment
  drm/nouveau: fix leak of gart mm node
  drm/nouveau: fix vram page mapping when crossing page table boundaries
  drm/nv17-nv40: Fix modesetting failure when pitch == 4096px (fdo bug 35901).
  drm/nouveau: don't create accel engine objects when noaccel=1
  drm/nvc0: recognise 0xdX chipsets as NV_C0
  drm/i915: Add a no lvds quirk for the Asus EeeBox PC EB1007
  drm/i915: Share the common force-audio property between connectors
  drm/i915: Remove unused enum "chip_family"
  drm/915: fix relaxed tiling on gen2: tile height
  drm/i915/crt: Explicitly return false if connected to a digital monitor
  drm/i915: Replace ironlake_compute_wm0 with g4x_compute_wm0
  drm/i915: Only print out the actual number of fences for i915_error_state
  drm/i915: s/addr & ~PAGE_MASK/offset_in_page(addr)/
  drm: i915: correct return status in intel_hdmi_mode_valid()
  drm/i915: fix regression after clock gating init split
  drm/i915: fix if statement in ivybridge irq handler

* 'drm-radeon-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6:
  drm/radeon/kms/atom: fix PHY init
  drm/radeon/kms: add missing Evergreen texture formats to the CS parser
  drm/radeon/kms: viewport height has to be even
  drm/radeon/kms: remove duplicate reg from r600 safe regs
  drm/radeon/kms: add support for Llano Fusion APUs
  drm/radeon/kms: add llano pci ids
  drm/radeon/kms: fill in asic struct for llano
  drm/radeon/kms: add family ids for llano APUs
  drm/radeon: fix oops in ttm reserve when pageflipping (v2)
  drm/radeon/kms: clean up the radeon kms Kconfig
  drm/radeon/kms: fix thermal sensor reading on juniper
  drm/radeon/kms: add missing case for cayman thermal sensor
  drm/radeon/kms: add blit support for cayman (v2)
  drm/radeon/kms/blit: workaround some hw issues on evergreen+

Merge branch 'timers-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

* 'timers-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  timers: Consider slack value in mod_timer()
  clockevents: Handle empty cpumask gracefully

* 'kvm-updates/3.0' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: Initialize kvm before registering the mmu notifier
  KVM: x86: use proper port value when checking io instruction permission
  KVM: add missing void __user * cast to access_ok() call

We had to say goodbye when David passed away recently.  David had a
huge impact on our community, both personally in the lives of the
people he worked with, and technically in the design and maintenance
of several subsystems.  He is greatly missed.

He also leaves behind a number of much loved subsystems now orphaned.
This patch updates the MAINTAINERS file for the areas that David was
responsible for and adds an entry for him to the CREDITS file.
Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>
Acked-by: NHarry Wei <harryxiyou@gmail.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

* git://git.kernel.org/pub/scm/linux/kernel/git/hirofumi/fatfs-2.6:
  fat: Fix corrupt inode flags when remove ATTR_SYS flag

_sdata needs to be declared in the linker script now as of commit
a2d063ac ("extable, core_kernel_data(): Make sure all archs define
_sdata")
Signed-off-by: NDavid Howells <dhowells@redhat.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

die_if_no_fixup() shouldn't use get_user() as it doesn't call set_fs() to
indicate that it wants to probe a kernel address.  Instead it should use
probe_kernel_read().

This fixes the problem of gdb seeing SIGILL rather than SIGTRAP when hitting
the KGDB special breakpoint upon SysRq+g being seen.  The problem was that
die_if_no_fixup() was failing to read the opcode of the instruction that caused
the exception, and thus not fixing up the exception.

This caused gdb to get a S04 response to the $? request in its remote protocol
rather than S05 - which would then cause it to continue with $C04 rather than
$c in an attempt to pass the signal onto the inferior process.  The kernel,
however, does not support $Cnn, and so objects by returning an E22 response,
indicating an error.  gdb does not expect this and prints:

	warning: Remote failure reply: E22

and then returns to the gdb command prompt unable to continue.
Signed-off-by: NDavid Howells <dhowells@redhat.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

One of the kernel debugger cacheflush variants escaped proper testing.  Two of
the labels are wrong, being derived from the code that was copied to construct
the variant.

The first label results in the following assembler message:

    AS      arch/mn10300/mm/cache-dbg-flush-by-reg.o
  arch/mn10300/mm/cache-dbg-flush-by-reg.S: Assembler messages:
  arch/mn10300/mm/cache-dbg-flush-by-reg.S:123: Error: symbol `debugger_local_cache_flushinv_no_dcache' is already defined

And the second label results in the following linker message:

  arch/mn10300/mm/built-in.o:(.text+0x1d39): undefined reference to `mn10300_local_icache_inv_range_reg_end'
  arch/mn10300/mm/built-in.o:(.text+0x1d39): relocation truncated to fit: R_MN10300_PCREL16 against undefined symbol `mn10300_local_icache_inv_range_reg_end'

To test this file the following configuration pieces must be set:

	CONFIG_AM34=y
	CONFIG_MN10300_CACHE_WBACK=y
	CONFIG_MN10300_DEBUGGER_CACHE_FLUSH_BY_REG=y
	CONFIG_MN10300_CACHE_MANAGE_BY_REG=y
	CONFIG_AM34_HAS_CACHE_SNOOP=n
Signed-off-by: NDavid Howells <dhowells@redhat.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6:
  [S390] fix kvm defines for 31 bit compile
  [S390] use generic RCU page-table freeing code
  [S390] qdio: Split SBAL entry flags
  [S390] kvm-s390: fix stfle facilities numbers >=64
  [S390] kvm-s390: Fix host crash on misbehaving guests

* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6: (21 commits)
  ARM: OMAP4: MMC: increase delay for pbias
  arm: omap2plus: move NAND_BLOCK_SIZE out of boards
  omap4: hwmod: Enable the keypad
  omap3: Free Beagle rev gpios when they are read, so others can read them later
  arm: omap3: beagle: Ensure msecure is mux'd to be able to set the RTC
  omap: rx51: Don't power up speaker amplifier at bootup
  omap: rx51: Set regulator V28_A always on
  ARM: OMAP4: MMC: no regulator off during probe for eMMC
  arm: omap2plus: fix ads7846 pendown gpio request
  ARM: OMAP2: Add missing iounmap in omap4430_phy_init
  ARM: omap4: Pass core and wakeup mux tables to omap4_mux_init
  ARM: omap2+: mux: Allow board mux settings to be NULL
  OMAP4: fix return value of omap4_l3_init
  OMAP: iovmm: fix SW flags passed by user
  arch/arm/mach-omap1/dma.c: Invert calls to platform_device_put and platform_device_del
  OMAP2+: mux: fix compilation warnings
  OMAP: SRAM: Fix warning: format '%08lx' expects type 'long unsigned int'
  arm: omap3: cm-t3517: fix section mismatch warning
  OMAP2+: Fix 9 section mismatch(es) warnings from mach-omap2/built-in.o
  ARM: OMAP2: Add missing include of linux/gpio.h
  ...

* git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-fixes:
  GFS2: Processes waiting on inode glock that no processes are holding

Merge branch 'fbdev-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/fbdev-3.x

* 'fbdev-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/fbdev-3.x:
  video: Fix use-after-free by vga16fb on rmmod
  video: Convert vmalloc/memset to vzalloc
  efifb: Disallow manual bind and unbind
  efifb: Fix mismatched request/release_mem_region
  efifb: Enable write-combining
  drivers/video/pxa168fb.c: add missing clk_put
  drivers/video/imxfb.c: add missing clk_put
  fbdev: bf537-lq035: add missing blacklight properties type
  savagefb: Use panel CVT mode as default
  fbdev: sh_mobile_lcdcfb: Fix up fallout from MERAM changes.

* 'for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6:
  vfs: make unlink() and rmdir() return ENOENT in preference to EROFS
  lmLogOpen() broken failure exit
  usb: remove bad dput after dentry_unhash
  more conservative S_NOSEC handling

If user space attempts to remove a non-existent file or directory, and
the file system is mounted read-only, return ENOENT instead of EROFS.
Either error code is arguably valid/correct, but ENOENT is a more
specific error message.
Reported-by: NMichael Tokarev <mjt@tls.msk.ru>
Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>

Callers of lmLogOpen() expect it to return -E... on failure exits, which
is what it returns, except for the case of blkdev_get_by_dev() failure.
It that case lmLogOpen() return the error with the wrong sign...
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
Acked-by: NDave Kleikamp <dave.kleikamp@oracle.com>

Sergey reported a CONFIG_PROVE_RCU warning in push_rt_task where
set_task_cpu() was called with both relevant rq->locks held, which
should be sufficient for running tasks since holding its rq->lock
will serialize against sched_move_task().

Update the comments and fix the task_group() lockdep test.
Reported-and-tested-by: NSergey Senozhatsky <sergey.senozhatsky@gmail.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: NPeter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1307115427.2353.3456.camel@twinsSigned-off-by: NIngo Molnar <mingo@elte.hu>

The main lock_is_held() user is lockdep_assert_held(), avoid false
assertions in lockdep_off() sections by unconditionally reporting the
lock is taken.

[ the reason this is important is a lockdep_assert_held() in ttwu()
  which triggers a warning under lockdep_off() as in printk() which
  can trigger another wakeup and lock up due to spinlock
  recursion, as reported and heroically debugged by Arne Jansen ]
Reported-and-tested-by: NArne Jansen <lists@die-jansens.de>
Signed-off-by: NPeter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: <stable@kernel.org>
Link: http://lkml.kernel.org/r/1307398759.2497.966.camel@laptopSigned-off-by: NIngo Molnar <mingo@elte.hu>

Some PCIe cards ship with a PCI-PCIe bridge which is not
visible as a PCI device in Linux. But the device-id of the
bridge is present in the IOMMU tables which causes a boot
crash in the IOMMU driver.
This patch fixes by removing these cards from the IOMMU
handling. This is a pure -stable fix, a real fix to handle
this situation appriatly will follow for the next merge
window.

Cc: stable@kernel.org	# > 2.6.32
Signed-off-by: NJoerg Roedel <joerg.roedel@amd.com>

* 'nouveau/drm-nouveau-fixes' of /ssd/git/drm-nouveau-next:
  drm/nv40: fall back to paged dma object for the moment
  drm/nouveau: fix leak of gart mm node
  drm/nouveau: fix vram page mapping when crossing page table boundaries
  drm/nv17-nv40: Fix modesetting failure when pitch == 4096px (fdo bug 35901).
  drm/nouveau: don't create accel engine objects when noaccel=1
  drm/nvc0: recognise 0xdX chipsets as NV_C0

* 'keithp/drm-intel-fixes' of /ssd/git/drm-next:
  drm/i915: Add a no lvds quirk for the Asus EeeBox PC EB1007
  drm/i915: Share the common force-audio property between connectors
  drm/i915: Remove unused enum "chip_family"
  drm/915: fix relaxed tiling on gen2: tile height
  drm/i915/crt: Explicitly return false if connected to a digital monitor
  drm/i915: Replace ironlake_compute_wm0 with g4x_compute_wm0
  drm/i915: Only print out the actual number of fences for i915_error_state
  drm/i915: s/addr & ~PAGE_MASK/offset_in_page(addr)/
  drm: i915: correct return status in intel_hdmi_mode_valid()
  drm/i915: fix regression after clock gating init split
  drm/i915: fix if statement in ivybridge irq handler

PCI(E)GART isn't quite stable it seems, fall back to old method until I get
the time to sort it out properly.
Signed-off-by: NBen Skeggs <bskeggs@redhat.com>

Signed-off-by: NBen Skeggs <bskeggs@redhat.com>

Hopefully the cause of nvc0 "page jumping" issue.
Signed-off-by: NBen Skeggs <bskeggs@redhat.com>

Reported-by: NMario Bachmann <grafgrimm77@gmx.de>
Tested-by: NGreg Turner <gmturner007@ameritech.net>
Signed-off-by: NFrancisco Jerez <currojerez@riseup.net>
Signed-off-by: NBen Skeggs <bskeggs@redhat.com>

Fixes various potential oopses.
Signed-off-by: NBen Skeggs <bskeggs@redhat.com>

Should hopefully get modesetting at least from this, it appears these are
GF119 chipsets.  Accel will come eventually, once I order a board.
Signed-off-by: NBen Skeggs <bskeggs@redhat.com>

Unfortunatly there are systems where the AMD IOMMU does not
cover all devices. This breaks with the current driver as it
initializes the global dma_ops variable. This patch limits
the AMD IOMMU to the devices listed in the IVRS table fixing
DMA for devices not covered by the IOMMU.

Cc: stable@kernel.org
Signed-off-by: NJoerg Roedel <joerg.roedel@amd.com>

The driver contains several loops counting on an u16 value
where the exit-condition is checked against variables that
can have values up to 0xffff. In this case the loops will
never exit. This patch fixed 3 such loops.

Cc: stable@kernel.org
Signed-off-by: NJoerg Roedel <joerg.roedel@amd.com>

KVM is not available for 31 bit but the KVM defines cause warnings:

arch/s390/include/asm/pgtable.h: In function 'ptep_test_and_clear_user_dirty':
arch/s390/include/asm/pgtable.h:817: warning: integer constant is too large for 'unsigned long' type
arch/s390/include/asm/pgtable.h:818: warning: integer constant is too large for 'unsigned long' type
arch/s390/include/asm/pgtable.h: In function 'ptep_test_and_clear_user_young':
arch/s390/include/asm/pgtable.h:837: warning: integer constant is too large for 'unsigned long' type
arch/s390/include/asm/pgtable.h:838: warning: integer constant is too large for 'unsigned long' type

Add 31 bit versions of the KVM defines to remove the warnings.
Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>

Replace the s390 specific rcu page-table freeing code with the
generic variant. This requires to duplicate the definition for the
struct mmu_table_batch as s390 does not use the generic tlb flush
code.

While we are at it remove the restriction that page table fragments
can not be reused after a single fragment has been freed with rcu
and split out allocation and freeing of page tables with pgstes.
Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>

The qdio SBAL entry flag is made-up of four different values that are
independent of one another. Some of the bits are reserved by the
hardware and should not be changed by qdio. Currently all four values
are overwritten since the SBAL entry flag is defined as an u32.

Split the SBAL entry flag into four u8's as defined by the hardware
and don't touch the reserved bits.
Signed-off-by: NJan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>