The following patch fixes a race condition in sg of sg_cmd_done racing
with sg_release. I've seen this bug hit several times on test machines
and the following patch fixes it. The race is that if srp->done is set
and the waiting thread gets a spurious wakeup immediately afterwards,
then the waiting thread can end up executing and completing, then getting
closed, freeing sfp before the wake_up_interruptible is called, which
then will result in an oops. The oops is fixed by locking around the
setting srp->done to 1 and the wake_up, and also locking around the
checking of srp->done, which guarantees that the wake_up_interruptible
will always occur before the sleeping thread gets a chance to run.
Signed-off-by: Brian King <brking@us.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

From: Mike Christie <mikenc@us.ibm.com>

> Oct 26 23:32:55 mina kernel: Unable to handle kernel paging request at 
> virtual address 6b6b6c7b
> Oct 26 23:32:55 mina kernel:  printing eip:
> Oct 26 23:32:55 mina kernel: f882b8ce
> Oct 26 23:32:55 mina kernel: *pde = 00000000
> Oct 26 23:32:55 mina kernel: Oops: 0000 [#1]
> Oct 26 23:32:55 mina kernel: PREEMPT
> Oct 26 23:32:55 mina kernel: Modules linked in: sd_mod usb_storage 
> ide_cd cdrom sg scsi_mod rd
> Oct 26 23:32:55 mina kernel: CPU:    0
> Oct 26 23:32:55 mina kernel: EIP:    0060:[<f882b8ce>]    Not tainted VLI
> Oct 26 23:32:55 mina kernel: EFLAGS: 00010296   (2.6.10-rc1-mm1y)
> Oct 26 23:32:55 mina kernel: EIP is at 
> scsi_block_when_processing_errors+0xe/0xe0 [scsi_mod]
> Oct 26 23:32:55 mina kernel: eax: 00000000   ebx: 6b6b6b6b   ecx: 
> f88ef640   edx: ec5b6578
> Oct 26 23:32:55 mina kernel: esi: e9baa4b8   edi: c17e9268   ebp: 
> e9677f0c   esp: e9677eb4
> Oct 26 23:32:55 mina kernel: ds: 007b   es: 007b   ss: 0068
> Oct 26 23:32:55 mina kernel: Process fdisk (pid: 2891, 
> threadinfo=e9676000 task=ea0c61f0)
> Oct 26 23:32:55 mina kernel: Stack: 00000000 00000001 00000000 00000000 
> 00000000 00000000 00000000 00000000
> Oct 26 23:32:55 mina kernel:        00000000 00000000 00000003 e9677ef0 
> c17e9268 0000006b c17e9268 e9677f0c
> Oct 26 23:32:55 mina kernel:        c0159761 c17e93e4 00000000 e9b98780 
> e9baa4b8 c17e9268 e9677f24 f88ef6a8
> Oct 26 23:32:55 mina kernel: Call Trace:
> Oct 26 23:32:55 mina kernel:  [<c01056cf>] show_stack+0x7f/0xa0
> Oct 26 23:32:55 mina kernel:  [<c0105876>] show_registers+0x156/0x1c0
> Oct 26 23:32:55 mina kernel:  [<c0105af6>] die+0x156/0x2e0
> Oct 26 23:32:55 mina kernel:  [<c011628d>] do_page_fault+0x36d/0x69c
> Oct 26 23:32:55 mina kernel:  [<c01051ed>] error_code+0x2d/0x38
> Oct 26 23:32:55 mina kernel:  [<f88ef6a8>] sd_release+0x68/0xa0 [sd_mod]
> Oct 26 23:32:55 mina kernel:  [<c0184c03>] blkdev_put+0x183/0x1b0
> Oct 26 23:32:55 mina kernel:  [<c01784ad>] __fput+0x14d/0x160
> Oct 26 23:32:55 mina kernel:  [<c0176797>] filp_close+0x57/0x90
> Oct 26 23:32:55 mina kernel:  [<c01768e3>] sys_close+0x113/0x240
> Oct 26 23:32:55 mina kernel:  [<c0104ff1>] sysenter_past_esp+0x52/0x71
> Oct 26 23:32:55 mina kernel: Code: 0c 8b 43 04 8b 00 89 5c 24 04 c7 04 
> 24 e4 d1 83 f8 89 44 24 08 e8 d3 21 8f c7 8d 76 00 55 89 e5 57 56 53 83 
> ec 4c 8b 75 08 8b 1e <8b> 83 10 01 00 00 a8 08 74 7c fc 31 c0 8d 7d b4 
> b9 05 00 00 00


The problem with using shost_for_each_device wrt to the above oops is
that scsi_forget_host sets the state to SDEV_CANCEL, so that when
scsi_host_cancel iterates over the devices using shost_for_each_device
it cannot get a handle to the sdev (scsi_device_get fails becuase the
state is set to SDEV_CANCEL). And, __scsi_iterate_devices does not clear
the next pointer if this happens, so I think this is needed to fix just
the refcount bug in shost_for_each_device.
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

asked for it.

into ppc970.osdl.org:/home/torvalds/v2.6/linux

Patch from Ben Dooks

Update the s3c2410 machines for the new serial handling,
as well as add the clock sources the bast and vr1000
rely on.

Signed-off-by: Ben Dooks
Signed-off-by: Russell King

Patch from Ben Dooks

Update the arch/arm/mach-s3c2410 core files for the
new serial port bits, and fix the bugs with s3c2440
handling.

Signed-off-by: Ben Dooks
Signed-off-by: Russell King

Patch from Ben Dooks

Clock code now uses the supplied device to check for
the id of the clock, so uart clocks are now simply
"uart" instead of "uart0", "uart1" and "uart2"

Signed-off-by: Ben Dooks
Signed-off-by: Russell King

Move ColdFire 5282 based senTec board startup code to the common
528x directory.
Signed-off-by: Greg Ungerer <gerg@snapgear.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Include the 527x and 528x family SIM module hardware definitions in the
generic SIM include. All ColdFire specific code just includes the generic
sim include without regard to which actuall ColdFire family member we
are compiling for.
Signed-off-by: Greg Ungerer <gerg@snapgear.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Add ColdFire 528x specific CPU reset code.
Signed-off-by: Greg Ungerer <gerg@snapgear.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Kernel startup code specific to the ColdFire 5272 based Feith
SACLES board.
Signed-off-by: Greg Ungerer <gerg@snapgear.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Update PIT timer comments to reflect the fact that it is also used
in the new ColdFire 527x family of processors.
Signed-off-by: Greg Ungerer <gerg@snapgear.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Move definition of kernel stack size so that asm files can use it.
Patch submitted by Philippe De Muyter <phdm@macqel.be>.
Signed-off-by: Greg Ungerer <gerg@snapgear.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Add support for the 527x ColdFire family, and change the 5282
support to be the generic 528x family in ColdFire DMA support
defines.
Signed-off-by: Greg Ungerer <gerg@snapgear.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Add conditional support for the 527x and 528x UART hardware to the common
ColdFire serial port header.
Signed-off-by: Greg Ungerer <gerg@snapgear.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

into ppc970.osdl.org:/home/torvalds/v2.6/linux

into ppc970.osdl.org:/home/torvalds/v2.6/linux

Mark deadline_init and deadline_exit as init and exit functions, and
make them static.
Signed-off-by: Chris Wright <chris@osdl.org>
Signed-off-by: Jens Axboe <axboe@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Mark cfq_exit function as and exit function, and make it static.
Signed-off-by: Chris Wright <chris@osdl.org>
Signed-off-by: Jens Axboe <axboe@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Mark as_init and as_exit as init and exit functions, and make them static.
Signed-off-by: Chris Wright <chris@osdl.org>
Signed-off-by: Jens Axboe <axboe@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

This box crashed at startup today and I noticed that some modules will
need to have assign_irq_vector() available although it is marked as
__init.

Looks like it was done for i386 in but not x86_64...
Signed-off-by: Alexander Nyberg <alexn@dsv.su.se>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Spot the typo.
Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

This patch is from the Xen crew - it allows override of deciding whether
two given pages can be considered physically contigous or not. This is
similar to how we handle iommu and virtual merging.
Signed-off-by: Jens Axboe <axboe@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Correct wrong paths and add link to deadline documentation.

Patch from Christian Kujau <evil@g-house.de>
Signed-off-by: Jens Axboe <axboe@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Warn once for each unknown command sent through SG_IO or the old SCSI
command ioctl.
Signed-off-by: Jens Axboe <axboe@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

In a recent patch, all the ST_ typedefs were removed from st.h.  One of
the side effects of this makes osst no longer compile.  This patch
replaces all of the typedef uses from st.h with their struct
equivalents.
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

Current BK doesn't compile with the G5 defconfig because the last
libata updated missed to change sata_svw to the new conventions.
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

This fixes up ChangeSet 1.2086.1.75
Signed-off-by: David S. Miller <davem@davemloft.net>

Correct MODULE_PARM to module_param (somehow I changed the
macro parameters but not the macro invocation).
Signed-off-by: Randy Dunlap <rddunlap@osdl.org>
Signed-off-by: Randy Dunlap <torvalds@osdl.org>

Stuff marked initdata that is referenced in non-init context.

Referenced in non-init context.