This can disrupt userspace signal management.
Signed-off-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
Cc: Roland McGrath <roland@redhat.com>
Cc: Oleg Nesterov <oleg@tv-sign.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

When I use relayfs with "overwrite" mode, read() still sets incorrect
number of consumed bytes.
Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Acked-by: Tom Zanussi <zanussi@us.ibm.com>
Acked-by: David Wilder <dwilder@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Fix a bug in the relay read interface causing the number of consumed bytes
to be set incorrectly.
Signed-off-by: Tom Zanussi <zanussi@us.ibm.com>
Signed-off-by: David Wilder <dwilder@us.ibm.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Change __devexit to __devexit_p:
sound/isa/opl3sa2.c:956: error: expected expression before '__attribute__'
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Jaroslav Kysela <perex@suse.cz>
Cc: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Also, remove outdated 1394 tree and mention MAINTAINERS as pointer to
development trees.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

WARNING: drivers/built-in.o(.text+0x8742a): Section mismatch: reference to .init.data:chipsfb_fix (between 'chipsfb_pci_init' and 'chipsfb_set_par')
WARNING: drivers/built-in.o(.text+0x87432): Section mismatch: reference to .init.data:chipsfb_fix (between 'chipsfb_pci_init' and 'chipsfb_set_par')
WARNING: drivers/built-in.o(.text+0x87442): Section mismatch: reference to .init.data:chipsfb_var (between 'chipsfb_pci_init' and 'chipsfb_set_par')
WARNING: drivers/built-in.o(.text+0x8744a): Section mismatch: reference to .init.data:chipsfb_var (between 'chipsfb_pci_init' and 'chipsfb_set_par')

init_chips is only called from chipsfb_pci_init
chipsfb_fix and chipsfb_var are only referenced from init_chips
Signed-off-by: Olaf Hering <olaf@aepfle.de>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

The new code in kernel/signal.c does not allow fetching private signals
from another task.  This patch avoid spurious POLLIN returns from a
signalfd poll(2) operation.
Signed-off-by: Davide Libenzi <davidel@xmailserver.org>
Cc: Oleg Nesterov <oleg@tv-sign.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

This patch changes the test for the thread pid from >= 0 to > 0.

When the saa8134 driver initialization fails after a certain point, it goes
through the complete shutdown process for the driver.  Part of shutting it
down includes tearing down the thread for tv audio.

The test for tearing down the thread tests for >= 0.  Since the dev
structure is kzalloc'd, the test will always be true if we haven't tried to
start the thread yet.  We end up waiting on pid 0 to complete, which will
never happen, so we lock up.

This bug was observed in Novell Bugzilla 284718, when request_irq() failed.
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Acked-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Cannot mix const and __initdata:
sound/pci/ice1712/prodigy192.c:708: error: ak4114_controls causes a section type conflict
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Jaroslav Kysela <perex@suse.cz>
Cc: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Rename struct pci_driver data so that false section mismatch warnings won't
be produced.

Sam, ISTM that depending on variable names is the weakest & worst part of
modpost section checking.  Should __init_refok work here?  I got build
errors when I tried to use it, probably because the struct pci_driver probe
and remove methods are not marked "__init_refok".

WARNING: drivers/dma/ioatdma.o(.data+0x10): Section mismatch: reference to .init.text: (between 'ioat_pci_drv' and 'ioat_pci_tbl')
WARNING: drivers/dma/ioatdma.o(.data+0x14): Section mismatch: reference to .exit.text: (between 'ioat_pci_drv' and 'ioat_pci_tbl')
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Acked-by: Chris Leech <christopher.leech@intel.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

If one has a dependency chain (tristate)FOO depends on (bool)BAR depends on
(tristate)BAZ, build problems will result.  If BAZ=m, then BAR can be set
y, which allows FOO=y.  It's possible to have FOO=y && BAZ=m, which
wouldn't be allowed if FOO depended directly on BAZ.  In effect, the bool
promotes the tristate from m to y.

This ends up causing a problem with several menuconfigs that look like:

menuconfig BAR
	bool
	depends on BAZ [tristate]
if BAR
config FOO
	tristate
endif

The solution used here is to add the dependencies of BAR to the if
statement, so that items in the if block will gain a direct
non-bool-promoted dependency on BAZ.  This is how it would work if a menu
was used instead of an if block.
Signed-off-by: Trent Piepho <xyzzy@speakeasy.org>
Acked-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Cc: "David S. Miller" <davem@davemloft.net>
Acked-by: Jeff Garzik <jeff@garzik.org>
Cc: Dominik Brodowski <linux@dominikbrodowski.net>
Cc: Chas Williams <chas@cmf.nrl.navy.mil>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

validate_anon_vma gave a useful check on the integrity of the anon_vma list
when Andrea was developing obj rmap; but it was not enabled in SLES9
itself, nor in mainline, until Nick changed commented-out RMAP_DEBUG to
configurable CONFIG_DEBUG_VM in 2.6.17.  Now Petr Vandrovec reports that
its BUG_ON(mapcount > 100000) can easily crash a CONFIG_DEBUG_VM=y system.

That limit was just an arbitrary number to protect against an infinite
loop.  We could raise it to something enormous (depending on sizeof struct
vma and size of memory?); but I rather think validate_anon_vma has outlived
its usefulness, and is better just removed - which gives a magnificent
performance boost to anything like Petr's test program ;)

Of course, a very long anon_vma list is bad news for preemption latency,
and I believe there has been one recent report of such: let's not forget
that, but validate_anon_vma only makes it worse not better.
Signed-off-by: Hugh Dickins <hugh@veritas.com>
Cc: Petr Vandrovec <petr@vmware.com>
Acked-by: Nick Piggin <npiggin@suse.de>
Cc: Andrea Arcangeli <andrea@suse.de>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Some HP firmware leaves the SMCf010 IRDA device incompletely configured, or
reports the wrong resources in _CRS.  As a workaround, when we find such a
device, try to auto-configure the device.

This ignores the _CRS data, picks a config from _PRS, and runs _SRS to
configure the device.  This makes smsc-ircc2 work correctly with PNP
resources (with no preconfiguration!) on all the machines I tested.

I think Windows does something like this by default for all devices,
so we should consider doing the same thing in Linux.

This patch addresses part of the 2.6.22 regression:
    "no irda0 interface (2.6.21 was OK), smsc does not find chip"
It fixes smsc-ircc2 PNP device detection on HP nc6000, nc6220, nw8000,
nw8240, and possibly other machines.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Cc: Samuel Ortiz <samuel@sortiz.org>
Cc: "Linus Walleij (LD/EAB)" <linus.walleij@ericsson.com>
Cc: Andrey Borzenkov <arvidjaar@mail.ru>
Cc: Michal Piotrowski <michal.k.k.piotrowski@gmail.com>
Cc: Adam Belay <ambx1@neo.rr.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

If we rely on the device resources from PNPBIOS, we also have to rely on
the BIOS to configure any bridges on the way to the device.

Using the PNPBIOS resources but changing the configuration of a bridge
behind the back of the firmware is likely to make things inconsistent.

This patch addresses part of the 2.6.22 regression:
    "no irda0 interface (2.6.21 was OK), smsc does not find chip"
It fixes smsc-ircc2 PNP device detection on HP nx5000 laptops.
Other laptops, including HP nc6000, HP nc8000, HP nw8000, and Toshiba
Portege 4000, still need PNP quirks to make this work.

With "smsc-ircc2.nopnp", we do the legacy device probe, including manual
bridge preconfiguration, as before.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Cc: Samuel Ortiz <samuel@sortiz.org>
Acked-by: "Linus Walleij (LD/EAB)" <linus.walleij@ericsson.com>
Cc: Andrey Borzenkov <arvidjaar@mail.ru>
Cc: Michal Piotrowski <michal.k.k.piotrowski@gmail.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Adam Belay <ambx1@neo.rr.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

main.c::mtrr_add() or mtrr_del() [exported]
calls main.c::mtrr_add_page() or mtrr_del_page() or mtrr_restore() [resume]
calls main.c::set_mtrr()
calls main.c::ipi_handler()
calls main.c::mtrr_if->set_all() == which can be cyrix_set_all

WARNING: arch/i386/kernel/built-in.o(.text+0x8657): Section mismatch: reference to .init.data: (between 'cyrix_set_all' and 'centaur_get_free_region')
WARNING: arch/i386/kernel/built-in.o(.text+0x866b): Section mismatch: reference to .init.data: (between 'cyrix_set_all' and 'centaur_get_free_region')
WARNING: arch/i386/kernel/built-in.o(.text+0x867e): Section mismatch: reference to .init.data: (between 'cyrix_set_all' and 'centaur_get_free_region')
WARNING: arch/i386/kernel/built-in.o(.text+0x8684): Section mismatch: reference to .init.data: (between 'cyrix_set_all' and 'centaur_get_free_region')
WARNING: arch/i386/kernel/built-in.o(.text+0x868a): Section mismatch: reference to .init.data: (between 'cyrix_set_all' and 'centaur_get_free_region')
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Fix gcc warning and add parameter checking when CONFIG_EVENTFD=n:

fs/aio.c: In function 'aio_complete':
fs/aio.c:955: warning: statement with no effect
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Davide Libenzi <davidel@xmailserver.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Fix a regression on Apple iBook1.  Changes in the clock init code caused an
incorrect XCLK frequency to be used leading to a corrupted display.
Signed-off-by: Ville Syrjala <syrjala@sci.fi>
Cc: Olaf Hering <olaf@aepfle.de>
Cc: Antonino Daplas <adaplas@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

When one llseek's past the end of the file and then writes, every page past
the previous end of the file should be cleared.  Trevor found that the code,
as is, does not assure that the very last page is always cleared.  This patch
takes care of that.
Signed-off-by: Michael Halcrow <mhalcrow@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Recent changes in eCryptfs have made it possible to get to ecryptfs_setattr()
with an uninitialized crypt_stat struct.  This results in a wide and colorful
variety of unpleasantries.  This patch properly initializes the crypt_stat
structure in ecryptfs_setattr() when it is necessary to do so.
Signed-off-by: Michael Halcrow <mhalcrow@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

This patch fixes the processes involved in wiping regions of the data during
truncate and write events, fixing a kernel hang in 2.6.22-rc4 while assuring
that zero values are written out to the appropriate locations during events in
which the i_size will change.

The range passed to ecryptfs_truncate() from ecryptfs_prepare_write() includes
the page that is the object of ecryptfs_prepare_write().  This leads to a
kernel hang as read_cache_page() is executed on the same page in the
ecryptfs_truncate() execution path.  This patch remedies this by limiting the
range passed to ecryptfs_truncate() so as to exclude the page that is the
object of ecryptfs_prepare_write(); it also adds code to
ecryptfs_prepare_write() to zero out the region of its own page when writing
past the i_size position.  This patch also modifies ecryptfs_truncate() so
that when a file is truncated to a smaller size, eCryptfs will zero out the
contents of the new last page from the new size through to the end of the last
page.
Signed-off-by: Michael Halcrow <mhalcrow@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6:
  [IA64] Make SN2 PCI code use ioremap rather than manually mangle the address
  [IA64] Force error to surface in nofault code
  [IA64] change sh_change_coherence oemcall to use nolock
  [IA64] remove duplicate header include line
  [IA64] Correct unwind validation code
  [IA64] is_power_of_2-ia64/mm/hugetlbpage.c

* 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev:
  libata: kill ATA_HORKAGE_DMA_RW_ONLY
  libata: use PIO for non-16 byte aligned ATAPI commands
  libata: call ata_check_atapi_dma() with qc better prepared
  libata: fix infinite EH waiting bug
  libata: fix ata_dev_disable()
  pata_it821x: fix section mismatch warning
  libata: remove unused variable from ata_eh_reset()
  libata: be less verbose about hpa
  libata: kill non-sense warning message
  libata: kill the infamous abnormal status message
  HPT374 is UDMA100 not UDMA133

* 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6:
  2.6.22: ERROR: "__ucmpdi2" [drivers/net/s2io.ko] undefined!
  cxgb3 - fix register to stop bc/mc traffic
  au1000_eth: Fix warnings.

This looks like leftover text in the kernel parameter in documentation.
Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

This adds support for some of the XGI Volari family that are based on the
SiS.
Signed-off-by: Dave Airlie <airlied@linux.ie>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

ATA_HORKAGE_DMA_RW_ONLY for TORiSAN is verified to be subset of using
DMA for ATAPI commands which aren't aligned to 16 bytes.  As libata
now doesn't use DMA for unaligned ATAPI commands, the horkage is
redundant.  Kill it.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

The IDE driver used DMA for ATAPI commands if READ/WRITE command is
multiple of sector size or sg command is multiple of 16 bytes.  For
libata, READ/WRITE sector alignment is guaranteed by the high level
driver (sr), so we only have to worry about the 16 byte alignment.

This patch makes ata_check_atapi_dma() always request PIO for all data
transfer commands which are not multiple of 16 bytes.

The following reports are related to this problem.

http://bugzilla.kernel.org/show_bug.cgi?id=8605		(confirmed)
http://thread.gmane.org/gmane.linux.kernel/476620	(confirmed)
https://bugzilla.novell.com/show_bug.cgi?id=229260	(probably)

Albert first pointed out the difference between IDE and libata.  Kudos
to him.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Albert Lee <albertcc@tw.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

In atapi_xlat(), prepare qc better before calling
ata_check_atapi_dma() such that ata_check_atapi_dma() can use info
from qc.  While at it, reformat weird looking if/else block in the
function.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

When EH gives up after repeated exceptions, it doesn't't clear the
PENDING bit on exit which leaves PENDING bit set without EH actually
scheduled.  This makes ata_port_wait_eh() to wait forever makes rmmod
hang on such port.  Fix it by clearing the flag.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

Fix silly condition check bug in ata_dev_disable().
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

Fix section mismatch when CONFIG_HOTPLUG=n (but functions are used
for resume):

WARNING: drivers/ata/pata_it821x.o(.text+0x3f): Section mismatch: reference to .init.text: (between 'it821x_reinit_one' and 'it821x_program_udma')
WARNING: drivers/ata/pata_it821x.o(.text+0x691): Section mismatch: reference to .init.text: (between 'it821x_init_one' and 'it821x_passthru_set_dmamode')
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

Removed unused variable did_followup_srst from ata_eh_reset().
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

There's no reason to print out hpa related messages when HPA is not
active.  Kill the unconditional message and add a warning message
which is printed if HPA size is smaller than the current size.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

prereset() is now allowed to set flag for unsupported reset method.
EH layer is responsible for selecting the fallback.  Remove non-sense
warning message.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

The infamous abnormal status message triggers on not so abnormal cases
including empty port and even when it's being triggered on actual
errors the info it provides is redundant and out of context - higher
level functions will print the info in better safe later anyway.

Also, by being triggered all the time, it leads people to think that
the abnormality is somehow related to all ATA and system problems
they're experiencing and gives owners of healthy systems unfounded
doubts about the integrity of the universe.  Make it a DPRINTK and
save the universe.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

Propogate change from drivers/ide
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

On Tue, Jun 19, Stephen Hemminger wrote:
> Olaf Hering <olaf@aepfle.de> wrote:
> > What happend to __ucmpdi2 from David Woodhouse?
> > google has a few hits about stuff like this on 32bit powerpc with gcc 4.1.2:
> >
> > ERROR: "__ucmpdi2" [drivers/net/s2io.ko] undefined!
> >
> > using the drivers/net/s2io* files from 2.6.21 with 2.6.22-rc5 fixes the
> > compile.
> >
> > 25805dcf adds two u64 >>= 48 followed by
> > a switch statement (line 2889 and 6816).
>
> Probably the "switch(err) {" needs a cast to a smaller type (like u8).

This change removes the compiler-generated calls to __ucmpdi2.
Signed-off-by: Olaf Hering <olaf@aepfle.de>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

Use the right register to stop broadcast/multicast traffic.
Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

Fixed by including <linux/dma-mapping.h>:

  CC      drivers/net/au1000_eth.o
drivers/net/au1000_eth.c: In function 'au1000_probe':
drivers/net/au1000_eth.c:661: warning: implicit declaration of function 'dma_alloc_noncoherent'
drivers/net/au1000_eth.c:802: warning: implicit declaration of function 'dma_free_noncoherent'
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

Force irq migration path during cpu offline, is not using proper locks and
irq_chip mask/unmask routines.  This will result in some races(especially
the device generating the interrupt can see some inconsistent state,
resulting in issues like stuck irq,..).

Appended patch fixes the issue by taking proper lock and encapsulating
irq_chip set_affinity() with a mask() before and an unmask() after.

This fixes a MSI irq stuck issue reported by Darrick Wong.

There are several more general bugs in this area(irq migration in the
process context). For example,

 1. Possibility of missing edge triggered irq.
 2. Reliable method of migrating level triggered irq in the process context.

We plan to look and close these in the near future.

Eric says:
	In addition even with the fix from Suresh there is still at least one
	nasty hardware race in fixup_irqs().   However we exercise that code
	path rarely enough that we are unlikely to hit it in the real world,
	and that race seems to have existed since the code was merged.  And a
	fix for that is not coming soon as it is an open investigation area
	if we can fix irq migration to work outside of irq context or if
	we have to rework the requirements imposed by the generic cpu hotplug
	and layer on fixup_irqs().  So this may come up again.
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Reported-and-tested-by: Darrick Wong <djwong@us.ibm.com>
Cc: Andi Kleen <ak@suse.de>
Acked-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>