This bug could cause oopses and page state corruption, because ncpfs
used the generic page-cache symlink handlign functions.  But those
functions only work if the page cache is guaranteed to be "stable", ie a
page that was installed when the symlink walk was started has to still
be installed in the page cache at the end of the walk.

We could have fixed ncpfs to not use the generic helper routines, but it
is in many ways much cleaner to instead improve on the symlink walking
helper routines so that they don't require that absolute stability.

We do this by allowing "follow_link()" to return a error-pointer as a
cookie, which is fed back to the cleanup "put_link()" routine.  This
also simplifies NFS symlink handling.
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

The current calling conventions for ->follow_link() are already fairly
complex.

What we have is
	1) you can return -error; then you must release nameidata yourself
	   and ->put_link() will _not_ be called.
	2) you can do nd_set_link(nd, ERR_PTR(-error)) and return 0
	3) you can do nd_set_link(nd, path) and return 0
	4) you can return 0 (after having moved nameidata yourself)

jffs2 follow_link() is broken - it has an exit where it returns
-EIO and leaks nameidata.
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

This patch fixes a false-positive from debug_smp_processor_id().

The processor ID is only used to look up crypto_tfm objects.
Any processor ID is acceptable here as long as it is one that is
iterated on by for_each_cpu().
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

1) cpufreq wants frequenceis in KHZ not MHZ
2) provide ->get() method so curfreq node is created
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Based upon a bug report and initial patch by
Ollie Wild.
Signed-off-by: NPatrick McHardy <kaber@trash.net>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Change operations on rif_lock from spin_{un}lock_bh to
spin_{un}lock_irq{save,restore} equivalents.  Some of the
rif_lock critical sections are called from interrupt context via
tr_type_trans->tr_add_rif_info.  The TR NIC drivers call tr_type_trans
from their packet receive handlers.
Signed-off-by: NJay Vosburgh <fubar@us.ibm.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The DM9000 driver is responding to ioctl() calls it should not be. This
can cause problems with the wireless tools incorrectly indentifying the
device as wireless capable, and crashing under certain operations.

This patch also moves the version printk() to the init call, so that
you only get it once for multiple devices, and to show it is loaded
if there are no defined dm9000s
Signed-off-by: NBen Dooks <ben-linux@fluff.org>
Signed-off-by: NJeff Garzik <jgarzik@pobox.com>

Fix DM9000 driver usage of spinlocks, which mainly came to light
when running a kernel with spinlock debugging. These come down to:

1) Un-initialised spin lock

2) Several cases of using  spin_xxx(lock) and not spin_xxx(&lock)

3) move the locking around the phy reg for read/write to only
   keep the lock when actually reading or writing to the phy.
Signed-off-by: NBen Dooks <ben-linux@fluff.org>
Signed-off-by: NJeff Garzik <jgarzik@pobox.com>

After suspend the driver needs to retest link status in case the cable
has been inserted or removed during the suspend.
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>
Signed-off-by: NJeff Garzik <jgarzik@pobox.com>

 - Using the right register clearly improves chances of getting the MII
   code and thus the driver working at all.
 - On startup check the media type before setting up duplex or we might
   spend the first 1.2s with a wrong duplex setting.
 - Get rid of whitespace lines.
Signed-off-by: NJeff Garzik <jgarzik@pobox.com>

BCM5785 (HT1000) is a Opteron Southbridge from Serverworks/Broadcom that
incorporates a single channel ATA100 IDE controller that is functionally
identical to the Serverworks CSB6 IDE controller.  This patch adds support
for the new PCI device ID and also the support for this controller.
Signed-off-by: NNarendra Sankar <nsankar@broadcom.com>
Acked-by: NJeff Garzik <jgarzik@pobox.com>
Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@elka.pw.edu.pl>

Adds support for Netcell Revolution to pci-ide generic driver by including
it in the list of devices matched.  Includes the Revolution in the list of
simplex devices forced into DMA mode.
Signed-off-by: NMatt Gillette <matt.gillette@netcell.com>
Cc: Bartlomiej Zolnierkiewicz <B.Zolnierkiewicz@elka.pw.edu.pl>
Cc: Jeff Garzik <jgarzik@pobox.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@elka.pw.edu.pl>

Signed-off-by: NGrant Coady <gcoady@gmail.com>
Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@elka.pw.edu.pl>

drivers/ide/ppc/pmac.c uses symbols ide_build_sglist,
__ide_dma_off_quietly, __ide_dma_on and __ide_dma_timeout when
CONFIG_BLK_DEV_IDEDMA_PMAC is defined. The declarations for these
symbols (in ide.h) depend on CONFIG_BLK_DEV_IDEDMA_PCI. There is a
missing dependency for this in drivers/ide/Kconfig which causes
drivers/ide/ppc/pmac.c to fail to build if CONFIG_BLK_DEV_IDEDMA_PMAC
is selected but CONFIG_BLK_DEV_IDEDMA_PCI is not.
Signed-off-by: NJuha-Matti Tapio <jmtapio@verkkotelakka.net>
Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@elka.pw.edu.pl>

* IDEFLOPPY_TICKS_DELAY assumed HZ == 100, fix it
* increase the delay to 50ms (to match comment in the code)

Thanks to Manfred Scherer <manfred.scherer.mhm@t-online.de>
for reporting the problem and testing the patch.
Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@elka.pw.edu.pl>

Since early CPU identify is in this information is already available
Signed-off-by: NAndi Kleen <ak@suse.de>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Fixes the incorrect DCR base value for the 440SP SRAM controller.
Signed-off-by: NMatt Porter <mporter@kernel.crashing.org>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Fixes build on 4xx stb03xxx when general purpose dma engine support is
enabled.
Signed-off-by: NMatt Porter <mporter@kernel.crashing.org>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Running UML inside a detached screen delivers SIGWINCH when UML is not
expecting it.  This patch ignores them.
Signed-off-by: NJeff Dike <jdike@addtoit.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

asm/elf.h breaks the x86_64 build.
Signed-off-by: NJeff Dike <jdike@addtoit.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

As suggested by Michael Kerrisk <mtk-manpages@gmx.net>, make RLIMIT_NICE
consistent with getpriority before it becomes available in released glibc.
Signed-off-by: NMatt Mackall <mpm@selenic.com>
Acked-by: NIngo Molnar <mingo@elte.hu>
Acked-by: NChris Wright <chrisw@osdl.org>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

This driver spams the user.
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

When i_acl_default is set to some error we do not hold the lock (hence we
are not allowed to drop it and reacquire later).
Signed-off-by: NJan Kara <jack@suse.cz>
Cc: Jeff Mahoney <jeffm@suse.com>
Cc: Chris Mason <mason@suse.com>
Cc: <reiserfs-dev@namesys.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

... otherwise we might try to load a bitmap from an array which hasn't one.

The bug is that if you create an array with an internal bitmap, shut it down,
and then create an array with the same md device, the md drive will assume it
should have a bitmap too.  As the array can be created with a different md
device, it is mostly an inconvenience.  I'm pretty sure there is no risk of
data corruption.
Signed-off-by: NNeil Brown <neilb@cse.unsw.edu.au>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Add inotify and ioprio syscall stubs to SH64.
Signed-off-by: NRobert Love <rml@novell.com>
Acked-by: NPaul Mundt <lethal@linux-sh.org>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Add inotify and ioprio syscall stubs to SH.
Signed-off-by: NRobert Love <rml@novell.com>
Acked-by: NPaul Mundt <lethal@linux-sh.org>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Down the road we want to eliminate the use of the global kernel lock entirely
from the NFS client.  To do this, we need to protect the fields in the
nfs_inode structure adequately.  Start by serializing updates to the
"cache_validity" field.

Note this change addresses an SMP hang found by njw@osdl.org, where processes
deadlock because nfs_end_data_update and nfs_revalidate_mapping update the
"cache_validity" field without proper serialization.

Test plan:
 Millions of fsx ops on SMP clients.  Run Nick Wilson's breaknfs program on
 large SMP clients.
Signed-off-by: NChuck Lever <cel@netapp.com>
Cc: Trond Myklebust <trond.myklebust@fys.uio.no>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Introduce atomic bitops to manipulate the bits in the nfs_inode structure's
"flags" field.

Using bitops means we can use a generic wait_on_bit call instead of an ad hoc
locking scheme in fs/nfs/inode.c, so we can remove the "nfs_i_wait" field from
nfs_inode at the same time.

The other new flags field will continue to use bitmask and logic AND and OR.
This permits several flags to be set at the same time efficiently.  The
following patch adds a spin lock to protect these flags, and this spin lock
will later cover other fields in the nfs_inode structure, amortizing the cost
of using this type of serialization.

Test plan:
 Millions of fsx ops on SMP clients.
Signed-off-by: NChuck Lever <cel@netapp.com>
Cc: Trond Myklebust <trond.myklebust@fys.uio.no>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Certain bits in nfsi->flags can be manipulated with atomic bitops, and some
are better manipulated via logical bitmask operations.

This patch splits the flags field into two.  The next patch introduces atomic
bitops for one of the fields.

Test plan:
 Millions of fsx ops on SMP clients.
Signed-off-by: NChuck Lever <cel@netapp.com>
Cc: Trond Myklebust <trond.myklebust@fys.uio.no>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Some folks have been emailing me and having trouble due to these stale
addresses;
Signed-off-by: NZwane Mwaikambo <zwane@arm.linux.org.uk>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

The error path in pnp_request_card_device() is broken (one variable is
left initialized and the semaphore is not unlocked).

This fixes it (and has been tested).
Signed-off-by: NJaroslav Kysela <perex@suse.cz>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Fix for manual binding of drivers to devices.  Problem is if you pass in
a valid device id, but the driver refuses to bind.  Infinite loop as
write() tries to resubmit the data it just sent.

Thanks to Michal Ostrowski <mostrows@watson.ibm.com> for pointing the
problem out.
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

We shouldn't be assuming that ppc_md.feature_call will be present.
Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

This fixes a bug in the PPC64 iommu vmerge code which results in the
potential for iommu_unmap_sg to go off unmapping more than it should.

This was found on a test system which resulted in PCI bus errors due to
PCI memory being unmapped while DMAs were still in progress.
Signed-off-by: NBrian King <brking@us.ibm.com>
Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>