Peter Moulder has pointed out that there is a slight chance that a
negative value might be passed to jiffies_to_msecs() in
ata_scsi_park_show(). This is fixed by saving the value of jiffies in a
local variable, thus also reducing code since the volatile variable
jiffies is accessed only once.
Signed-off-by: NElias Oltmanns <eo@nebensachen.de>
Signed-off-by: Tejun Heo <tj.kernel.org>
Signed-off-by: NJeff Garzik <jgarzik@redhat.com>

All three flavors of sata_nv's are different in how their hardreset
behaves.

* generic: Hardreset is not reliable.  Link often doesn't come online
  after hardreset.

* nf2/3: A little bit better - link comes online with longer debounce
  timing.  However, nf2/3 can't reliable wait for the first D2H
  Register FIS, so it can't wait for device readiness or classify the
  device after hardreset.  Follow-up SRST required.

* ck804: Hardreset finally works.

The core layer change to prefer hardreset and follow up changes
exposed the above issues and caused various detection regressions for
all three flavors.  This patch, hopefully, fixes all the known issues
and should make sata_nv error handling more reliable.
Signed-off-by: NTejun Heo <tj@kernel.org>
Signed-off-by: NJeff Garzik <jgarzik@redhat.com>

commit b9d5b89b (sata_via: fix support
for 5287) accidently (?) removed vt*_prepare_host error handling - restore it

catched by gcc:
drivers/ata/sata_via.c: In function 'svia_init_one':
drivers/ata/sata_via.c:567: warning: 'host' may be used uninitialized in this function
Signed-off-by: NMarcin Slusarz <marcin.slusarz@gmail.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Joseph Chan <JosephChan@via.com.tw>
Cc: Jeff Garzik <jgarzik@redhat.com>
Signed-off-by: NJeff Garzik <jgarzik@redhat.com>

Promise ATA engines need to be reset when errors occur.
That's currently done for errors detected by sata_promise itself,
but it's not done for errors like timeouts detected outside of
the low-level driver.

The effect of this omission is that a timeout tends to result
in a sequence of failed COMRESETs after which libata EH gives
up and disables the port. At that point the port's ATA engine
hangs and even reloading the driver will not resume it.

To fix this, make sata_promise override ->hardreset on SATA
ports with code which calls pdc_reset_port() on the port in
question before calling libata's hardreset. PATA ports don't
use ->hardreset, so for those we override ->softreset instead.
Signed-off-by: NMikael Pettersson <mikpe@it.uu.se>
Signed-off-by: NJeff Garzik <jgarzik@redhat.com>

* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6:
  cifs: fix renaming one hardlink on top of another
  [CIFS] fix error in smb_send2
  [CIFS] Reduce number of socket retries in large write path

cifs: fix renaming one hardlink on top of another

POSIX says that renaming one hardlink on top of another to the same
inode is a no-op. We had the logic mostly right, but forgot to clear
the return code.
Signed-off-by: NJeff Layton <jlayton@redhat.com>
Signed-off-by: NSteve French <sfrench@us.ibm.com>

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

* 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  tracing, ring-buffer: add paranoid checks for loops
  ftrace: use kretprobe trampoline name to test in output
  tracing, alpha: undefined reference to `save_stack_trace'

Merge branch 'io-mappings-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

* 'io-mappings-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  io mapping: clean up #ifdefs
  io mapping: improve documentation
  i915: use io-mapping interfaces instead of a variety of mapping kludges
  resources: add io-mapping functions to dynamically map large device apertures
  x86: add iomap_atomic*()/iounmap_atomic() on 32-bit using fixmaps

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6:
  ALSA: hda: make a STAC_DELL_EQ option
  ALSA: emu10k1 - Add more invert_shared_spdif flag to Audigy models
  ALSA: hda - Add a quirk for another Acer Aspire (1025:0090)
  ALSA: remove direct access of dev->bus_id in sound/isa/*
  sound: struct device - replace bus_id with dev_name(), dev_set_name()
  ALSA: Fix PIT lockup on some chipsets when using the PC-Speaker
  ALSA: rawmidi - Add open check in rawmidi callbacks
  ALSA: hda - Add digital-mic for ALC269 auto-probe mode
  ALSA: hda - Disable broken mic auto-muting in Realtek codes

* 'proc-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/adobriyan/proc:
  proc: revert /proc/uptime to ->read_proc hook

* 'drm-next' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6:
  i915: Add GEM ioctl to get available aperture size.
  drm/radeon: fixup further bus mastering confusion.
  build fix: CONFIG_DRM_I915=y && CONFIG_ACPI=n

Impact: cleanup

clean up ifdefs: change #ifdef CONFIG_X86_32/64 to
CONFIG_HAVE_ATOMIC_IOMAP.

flip around the #ifdef sections to clean up the structure.
Signed-off-by: NKeith Packard <keithp@keithp.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

Impact: add documentation
Signed-off-by: NKeith Packard <keithp@keithp.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

Add support for explicitly enabling the EQ distortion hack for
systems without software biquad support.
Signed-off-by: NMatthew Ranostay <mranostay@embeddedalley.com>
Cc: stable@kernel.org
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

While writing a new tracer, I had a bug where I caused the ring-buffer
to recurse in a bad way. The bug was with the tracer I was writing
and not the ring-buffer itself. But it took a long time to find the
problem.

This patch adds paranoid checks into the ring-buffer infrastructure
that will catch bugs of this nature.

Note: I put the bug back in the tracer and this patch showed the error
      nicely and prevented the lockup.
Signed-off-by: NSteven Rostedt <srostedt@redhat.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

Impact: ia64+tracing build fix

When a function is kprobed, the return address is set to the
kprobe_trampoline, or something similar. This caused the output
of the trace to look confusing when the parent seemed to be this
"kprobe_trampoline" function.

To fix this, Abhishek Sagar added a test of the instruction pointer
of the parent to see if it matched the kprobe_trampoline. If it
did, the output would print a "[unknown/kretprobe'd]" instead.

Unfortunately, not all archs do this the same way, and the trampoline
function may not be exported, which causes failures in builds.

This patch will compare the name instead of the pointer to see
if it matches. This prevents us from depending on a function from
being exported, and should work on all archs. The worst that can
happen is that an arch might use a different name and then we
go back to the confusing output. At least the arch will still build.
Reported-by: NAbhishek Sagar <sagar.abhishek@gmail.com>
Signed-off-by: NSteven Rostedt <srostedt@redhat.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>
Tested-by: NAbhishek Sagar <sagar.abhishek@gmail.com>
Acked-by: NAbhishek Sagar <sagar.abhishek@gmail.com>

Reported in Novell bnc#440862:
    https://bugzilla.novell.com/show_bug.cgi?id=440862Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Impact: build fix on !stacktrace architectures

only select STACKTRACE on architectures that have STACKTRACE_SUPPORT

... since we also need to ifdef out the guts of ftrace_trace_stack().
We also want to disallow setting TRACE_ITER_STACKTRACE in trace_flags
on such configs, but that can wait.
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
Acked-by: NSteven Rostedt <srostedt@redhat.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

Added a quirk for another Acer Aspier laptop (1025:0090) with ALC883
codec.  Reported in Novell bnc#426935:
    https://bugzilla.novell.com/show_bug.cgi?id=426935Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Removed the direct accesses of dev->bus_id in sound/isa/* by replacement
with dev_err() or dev_warn() functions.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

[stripped sound/isa/* changes, replaced with the next patch -- tiwai]
Signed-off-by: NKay Sievers <kay.sievers@vrfy.org>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Fix PIT lockup on some chipsets when using the PC-Speaker.
Signed-off-by: NZoltan Devai <zdevai@gmail.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

The drivers (e.g. mtpav) may call rawmidi functions in irq handlers
even though the streams are not opened.  This results in Oops or panic.

This patch adds the rawmidi state check before actually operating the
rawmidi buffers.
Tested-by: NIngo Molnar <mingo@elte.hu>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

This will let userland know when to submit its batchbuffers, before they get
too big to fit in the aperture.
Signed-off-by: NEric Anholt <eric@anholt.net>
Signed-off-by: NDave Airlie <airlied@redhat.com>

* git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6:
  ide-gd: re-get capacity on revalidate
  tx4938ide: Avoid underflow on calculation of a wait cycle
  tx4938ide: Do not call devm_ioremap for whole 128KB
  tx4938ide: Check minimum cycle time and SHWT range (v2)
  ide: Switch to a common address
  ide-cd: fix DMA alignment regression

We need to re-get a removable media's capacity when revalidating the
disk so that its partitions get rescanned by the block layer.
Signed-off-by: NBorislav Petkov <petkovbb@gmail.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: axboe@kernel.dk
Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Make 'wt' variable signed while it can be negative during calculation.
Suggested-by: NSergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: NAtsushi Nemoto <anemo@mba.ocn.ne.jp>
Cc: sshtylyov@ru.mvista.com
Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Call devm_ioremap() for CS0 and CS1 separetely.
And some style cleanups.
Suggested-by: NSergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: NAtsushi Nemoto <anemo@mba.ocn.ne.jp>
Cc: ralf@linux-mips.org
Acked-by: NSergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>

SHWT value is used as address valid to -CSx assertion and -CSx to -DIOx
assertion setup time, and contrarywise, -DIOx to -CSx release and -CSx
release to address invalid hold time, so it actualy applies 4 times and
so constitutes -DIOx recovery time.  Check requirement of the recovery
time and cycle time.  Also check SHWT maximum value.
Suggested-by: NSergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: NAtsushi Nemoto <anemo@mba.ocn.ne.jp>
Cc: ralf@linux-mips.org
Acked-by: NSergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Signed-off-by: NAlan Cox <alan@redhat.com>
Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>

e5318b53 ("ide: use the dma safe check for
REQ_TYPE_ATA_PC") introduced a regression which caused some ATAPI drives to
turn off DMA for REQ_TYPE_BLOCK_PC commands while burning and thus degrading
performance and ultimately causing an excessive amount of underruns.

The issue is documented also in:
http://bugzilla.kernel.org/show_bug.cgi?id=11742.
Signed-off-by: NBorislav Petkov <petkovbb@gmail.com>
Cc: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Tested-by: NValerio Passini <valerio.passini@unicam.it>
[bart: fixup patch description per comments from Sergei Shtylyov]
Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
  sparc64: Fix PCI resource mapping on sparc64
  sparc64: Kill annoying warning when building compat_binfmt_elf.o
  sparc32: kernel/trace/trace.c wants DIE_OOPS
  sparc64: Fix __copy_{to,from}_user_inatomic defines.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (33 commits)
  af_unix: netns: fix problem of return value
  IRDA: remove double inclusion of module.h
  udp: multicast packets need to check namespace
  net: add documentation for skb recycling
  key: fix setkey(8) policy set breakage
  bpa10x: free sk_buff with kfree_skb
  xfrm: do not leak ESRCH to user space
  net: Really remove all of LOOPBACK_TSO code.
  netfilter: nf_conntrack_proto_gre: switch to register_pernet_gen_subsys()
  netns: add register_pernet_gen_subsys/unregister_pernet_gen_subsys
  net: delete excess kernel-doc notation
  pppoe: Fix socket leak.
  gianfar: Don't reset TBI<->SerDes link if it's already up
  gianfar: Fix race in TBI/SerDes configuration
  at91_ether: request/free GPIO for PHY interrupt
  amd8111e: fix dma_free_coherent context
  atl1: fix vlan tag regression
  SMC91x: delete unused local variable "lp"
  myri10ge: fix stop/go mmio ordering
  bonding: fix panic when taking bond interface down before removing module
  ...

s/user/used/
Signed-off-by: NJeff Garzik <jgarzik@redhat.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

There is a problem discovered in recent versions of ATI Mach64 driver
in X.org on sparc64 architecture. In short, the driver fails to mmap
MMIO aperture (PCI resource #2).

I've found that kernel's __pci_mmap_make_offset() returns EINVAL. It
checks whether user attempts to mmap more than the resource length,
which is 0x1000 bytes in our case. But PAGE_SIZE on SPARC64 is 0x2000
and this is what actually is being mmaped. So __pci_mmap_make_offset()
failed for this PCI resource.
Signed-off-by: NMax Dmitrichenko <dmitrmax@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

GCC warns because some tests against 32-bit values never evaluate to
true due to how TASK_SIZE is defined.

I always wanted to mimick powerpc's definition of TASK_SIZE, which
is simply TASK_SIZE_OF(current) and that also fixes the warning.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Alexander Beregalov reports oops in __bzero() called from
copy_from_user_fixup() called from iov_iter_copy_from_user_atomic(),
when running dbench on tmpfs on sparc64: its __copy_from_user_inatomic
and __copy_to_user_inatomic should be avoiding, not calling, the fixups.
Signed-off-by: NHugh Dickins <hugh@veritas.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>