Call the mutex slowpath more conservatively - e.g.  FRAME_POINTERS can
change the calling convention, in which case a direct branch to the
slowpath becomes illegal.  Bug found by Hugh Dickins.
Signed-off-by: NIngo Molnar <mingo@elte.hu>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Remove unnecessary (and incorrect) inclusion of asm/mutex.h, pointed out
by David Howells.
Signed-off-by: NIngo Molnar <mingo@elte.hu>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

This requires the proper capabilities for the moxa bios update ioctl's.
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Fix a5 register corruption when processing user space signals handlers.
We need to save a5 through each contenxt change.
Signed-off-by: NGreg Ungerer <gerg@uclinux.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

We're starting a number of big applications (memory footprint app.
1MByte) on our Arcturus uC5272.  Therefore memory fragmentation is a
real pain for us.  We've switched to uClinux-2.4.27-uc1 and found that
page_alloc2 fragments the memory heavily.

Digging into it we found a bug in the find_next_zero_bit function in the
m68knommu/bitops.h file.  if the size isn't a multiple of 32 than the
upper bits of the last word to be searched should be masked.  But the
functions masks the lower bits of the last word because it uses a right
shift instead of a left shift operator.

Patch submitted by Sascha Smejkal <s.smejkal@centersystems.at>
Signed-off-by: NGreg Ungerer <gerg@uclinux.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Modify the initial trace output (which is based on flags in the binary
header) so that it is not done until after the magic number check.  This
may well not be a flat format binary, so the flags could be invalid.
(Prime example, running a script).

Changes prompted by patches from Stuart Hughs.
Signed-off-by: NGreg Ungerer <gerg@uclinux.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Set the hardware interrupt priority to a different value for each
attached ColdFire serial port.  According to the CPU documentation you
should not use the same combination of level/priority on more than one
device.  People have reported odd serial port behavior with them set the
same.
Signed-off-by: NGreg Ungerer <gerg@uclinux.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Allow the ColdFire FEC ethernet driver to be enabled on the M520x CPU
family.
Signed-off-by: NGreg Ungerer <gerg@uclinux.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Adjust length of M5208EVB ram define.  It should size up to 32MB after
adding in the dBUG reserved 128k.

Problem pointed out be Milton Miller <miltonm@bga.com>.
Signed-off-by: NGreg Ungerer <gerg@uclinux.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

This is a patch adapted from a posting by Andrea Tarani which was
pointed out to me by Bernardo Innocenti.  Thanks to both of them for
their help and patience.

The original posting is here:
  http://mailman.uclinux.org/pipermail/uclinux-dev/2005-July/033543.html

The problem first manifest itself as busybox ping terminating with an
"Illegal instruction".  I reduced this to a test case and found that
variable size arrays allocated on the stack could lead to stacks not
aligned on 32 bit boundaries.  For the Coldfire this proved fatal.

Having been pointed out this patch by Bernardo, I applied it and it
fixed the first test case.  I then went back to busybox's ping.  This
still failed with "Illegal instruction", but in a different way.  Before
it depended on the size allocated for the ping buffer, now it happened
every time.  I also found it depended on optimisation level (gcc-3.4.0)
-Os was okay but not -O2.

After a lot of looking, it turned out that register a5 was being
corrupted by the signal handler (after applying the patch).  I re-worked
the patch a bit to save/restore a5 and now all seems well.

Patch submitted by Stuart Hughs <stuarth@freescale.com>
Signed-off-by: NGreg Ungerer <gerg@uclinux.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Fix broken "truct" -> "struct" in arch_ptrace() parameter list.
Signed-off-by: NGreg Ungerer <gerg@uclinux.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Don't specify compiler optimization flags in the m68knommu Makefile.
Let the top level Makefile/config set it.
Signed-off-by: NGreg Ungerer <gerg@uclinux.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Remove obsolete MAGIC_ROM_PTR code from h8300 architecture.
Signed-off-by: NGreg Ungerer <gerg@uclinux.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Remove obsolete MAGIC_ROM_PTR code from h8300 architecture.
Signed-off-by: NGreg Ungerer <gerg@uclinux.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

We want to wait for the cl_users to go down to zero, not for it to stay
positive.  Quoth Trond (who wasn't even the author, but acked the wrong
version): "Argh! I need to increase my daily caffeine dosages."
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Pointed out by Srivatsa Vaddagiri <vatsa@in.ibm.com>.

rcu_do_batch() stops after processing maxbatch callbacks
on ->donelist leaving rcu_tasklet in TASKLET_STATE_SCHED
state.

If CPU_DEAD event happens remaining ->donelist entries are
lost, rcu_offline_cpu() kills this tasklet.

With this patch ->donelist migrates along with ->curlist
and ->nxtlist to the current cpu.

Compile tested.
Signed-off-by: NOleg Nesterov <oleg@tv-sign.ru>
Acked-by: NPaul E. McKenney <paulmck@us.ibm.com>
Cc: Srivatsa Vaddagiri <vatsa@in.ibm.com>
Cc: Dipankar Sarma <dipankar@in.ibm.com>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

This patch moves rcu_state into the rcu_ctrlblk. I think there
are no reasons why we should have 2 different variables to control
rcu state. Every user of rcu_state has also "rcu_ctrlblk *rcp" in
the parameter list.
Signed-off-by: NOleg Nesterov <oleg@tv-sign.ru>
Acked-by: NPaul E. McKenney <paulmck@us.ibm.com>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Add CDC-RAM to capability mask. This prevents udev incorrectly reporting
RAM capabilities for device.
Signed-off-by: NAndrey Borzenkov <arvidjaar@mail.ru>
Signed-off-by: NJens Axboe <axboe@suse.de>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

DM doesn't need to bounce bio's on its own, but the block layer defaults
to that in blk_queue_make_request(). The lower level drivers should
bounce ios themselves, that is what they need to do if not layered below
dm anyways.
Signed-off-by: NJens Axboe <axboe@suse.de>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

This triggers all the time with the various polled event programs,
change it to CD_OPEN so it's supressed by default.
Signed-off-by: NJens Axboe <axboe@suse.de>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

To preserve the ->errors values for requests that failed, use the normal
completion path for that.
Signed-off-by: NJens Axboe <axboe@suse.de>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

In the process of optimising our per cpu data code, I found a ppc64
compiler bug that has been around forever. Basically the current
RELOC_HIDE can end up trashing r30. Details of the bug can be found at

  http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25572

This bug is present in all compilers before 4.1. It is masked by the
fact that our current per cpu data code is inefficient and causes
other loads that end up marking r30 as used.

A workaround identified by Alan Modra is to use the =r asm constraint
instead of =g.
Signed-off-by: NAnton Blanchard <anton@samba.org>
[ Verified that this makes no real difference on x86[-64] */
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Fix up some trivial conflicts in {i386|ia64}/Makefile

This patch removes the hfsplus_inode_check() debug function.

It also removes the now obsolete last_inode_cnt and inode_cnt from struct
hfsplus_sb_info.
Signed-off-by: NAdrian Bunk <bunk@stusta.de>
Acked-by: NRoman Zippel <zippel@linux-m68k.org>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

I know several people using MAGIC_SYSRQ not for kernel debugging but for
trying to do a halfway normal shutdown in case of problems.

Since there's no technical reason why MAGIC_SYSRQ would have to depend on
DEBUG_KERNEL, I'm therefore suggesting to drop this dependency.
Signed-off-by: NAdrian Bunk <bunk@stusta.de>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

There's no need to guard the normalize_rt_tasks() prototype with an #ifdef
CONFIG_MAGIC_SYSRQ.
Signed-off-by: NAdrian Bunk <bunk@stusta.de>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

If a __deprecated is desired it should go to the prototype in the header
(where it currently isn't).

But at this place it's pointless.
Signed-off-by: NAdrian Bunk <bunk@stusta.de>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

The Coverity checker spotted this dead code.
Signed-off-by: NAdrian Bunk <bunk@stusta.de>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

"extern inline" doesn't make much sense.
Signed-off-by: NAdrian Bunk <bunk@stusta.de>
Cc: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Remove redundant casts of k*alloc() return values in
security/selinux/ss/services.c
Signed-off-by: NJesper Juhl <jesper.juhl@gmail.com>
Acked-by: NStephen Smalley <sds@epoch.ncsc.mil>
Cc: James Morris <jmorris@namei.org>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Remove unneeded casts of kmalloc() return value in binfmt_elf.
Signed-off-by: NJesper Juhl <jesper.juhl@gmail.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Decrease the number of pointer derefs in drivers/md/multipath.c

Benefits of the patch:
 - Fewer pointer dereferences should make the code slightly faster.
 - Size of generated code is smaller
 - improved readability
Signed-off-by: NJesper Juhl <jesper.juhl@gmail.com>
Acked-by: NIngo Molnar <mingo@elte.hu>
Cc: Alasdair G Kergon <agk@redhat.com>
Acked-by: NNeilBrown <neilb@suse.de>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Decrease the number of pointer derefs in kernel/exit.c

Benefits of the patch:
 - Fewer pointer dereferences should make the code slightly faster.
 - Size of generated code is smaller
 - improved readability
Signed-off-by: NJesper Juhl <jesper.juhl@gmail.com>
Acked-by: NIngo Molnar <mingo@elte.hu>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Wrap all the code to 80 chars on a line.
`}\nelse' changed to `} else'.
Clean whitespaces in header file.
Signed-off-by: NJiri Slaby <xslaby@fi.muni.cz>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Firmware loading via hotplug added.
Cleanup firmware old-way fields in header file.
Signed-off-by: NJiri Slaby <xslaby@fi.muni.cz>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Pci probing functions added, most of functions rewrited because of it (some
for loops were redundant).  Used PCI_DEVICE macro.  dev_* used for printing
wherever possible.  Renamed some functions to have isicom_ in the name.
Signed-off-by: NJiri Slaby <xslaby@fi.muni.cz>
Signed-off-by: NLaurent Riffard <laurent.riffard@free.fr>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>