This patch fixes one of Christroph's fixme comments in the SCSI midlayer.

The selection of the serial number and pid for commands was done
by a global variable and not SMP safe. The race was not very
serious because it was only used for error handling, but it's
still better to fix it.

I audited all the drivers and none seemed to use them
for anything interesting, so I just made it a per host counter
protected by host lock.

(in fact they could be probably removed because they only see
to be used as a flag in exception handling and for debugging.
The patch would be unfortunately quite big because a lot
of driver printks use them)

This should be slight faster on SMP too because the cache line of
the counter won't bounce around the machine.
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

This patch makes some needlessly global code static.
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

From: 	James.Smart@Emulex.Com

Adds io statistics (requests, completions, error count) as generic
attributes for scsi devices.
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

I think the hardware_version, firmware_version, rom_version and
driver_version don't belong to the FC transport class, there's
nothing specific to FC or even SCSI specific in them.
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

From: 	Moore, Eric Dean <Eric.Moore@lsil.com>

1) mptscsih.c: I have changed task management 
requests so they complete in same thread before returning
to os.  I removed the TMtimer code.  
 
(2) mptctl.c: I have deleted both TMtimer and timer code. Replaced
with wait_event_interruptible_timeout.  So commands are now
completed in same thread.  
 
(3) mptctl_do_fw_download - nasty polling of global parameters
that are set in contents of interrupt handler(mptctl_reply), now using
wait_event_interruptible_timeout. 
 
(4) I have cleaned up mptctl_reply.
Signed-off-by: Eric Moore <Eric.Moore@lsil.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

Convert mptctl to compat_ioctl. I also changed it to unlocked_ioctl
while I was on it.
Signed-off-by: Andi Kleen <ak@muc.de>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

Convert megaraid2 driver to new compat_ioctl entry points.
Signed-off-by: Andi Kleen <ak@muc.de>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

Add compat_ioctl to SG driver
Signed-off-by: Andi Kleen <ak@muc.de>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

Convert aacraid driver to the compat_ioctl entry points.

I don't have hardware, so this is only compile tested, but I just
did some transformations on the existing code.
Signed-off-by: Andi Kleen <ak@muc.de>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

Add compat_ioctl to osst
Signed-off-by: Andi Kleen <ak@muc.de>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

Add comment that SR doesn't support compat_ioctl (because it doesn't
pass down any driver ioctls right now)
Signed-off-by: Andi Kleen <ak@muc.de>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

Call new compat_ioctl host vector from tape driver
Signed-off-by: Andi Kleen <ak@muc.de>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

Add compat_ioctl entry point to SD
Signed-off-by: Andi Kleen <ak@muc.de>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

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

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

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

Not that low-level code really tends to care, but since loff_t is
a signed 64-bit entity and size_t is unsigned (and potentially
64-bit), mixing the two isn't very well-defined.. 

The actual user copy will do them too, but only for the
range that ends up being actually copied. That hides
bugs when the range has been clamped by file size or other
issues.

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

With Olaf Hering <olh@suse.de>.

Parameters were interchanged.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

From: Prarit Bhargava <prarit@sgi.com>

I discovered an issue where a hwif_init() failure lead to /proc/ide files
being created for devices that failed probes.  This resulted in
oops/WARN_ON/BUG_ON executions through the kernel depending on what
actions were on going.

slightly changed by me (bart)
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

ide_hwgroup_t.polling field added.  0 in poll_timeout field
used to indicate inactive polling but because 0 is a valid
jiffy value, though slim, there's a chance that something
weird can happen.
Signed-off-by: Tejun Heo <tj@home-tj.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

ide_drive_t.sleeping field added.  0 in sleep field used to
indicate inactive sleeping but because 0 is a valid jiffy
value, though slim, there's a chance that something can go
weird.  And while at it, explicit jiffy comparisons are
converted to use time_before() macros.
Signed-off-by: Tejun Heo <tj@home-tj.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Signed-off-by: Tejun Heo <tj@home-tj.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

In ide_error(), drive cannot be NULL.  ide_dump_status() can't
handle NULL drive.

From: Tejun Heo <tj@home-tj.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Explicit jiffy comparision converted to time_after() macro.
Signed-off-by: Tejun Heo <tj@home-tj.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

In __ide_do_rw_disk(), ide_started used to be returned blindly
after issusing PIO write.  This can cause hang if
pre_task_out_intr() returns ide_stopped due to failed
ide_wait_stat() test.  Fixed to pass the return value of
pre_task_out_intr().
Signed-off-by: Tejun Heo <tj@home-tj.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

In __ide_do_rw_disk(), the shifted block, instead of the
original rq->sector, should be used when checking range for
lba48 dma.
Signed-off-by: Tejun Heo <tj@home-tj.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

In drivers/ide/pci/piix.[hc], init_setup_piix() is defined and
used but only one init_setup function is defined and no
demultiplexing is done using init_setup callback.  As other
drivers call ide_setup_pci_device() directly in such cases,
this patch removes init_setup_piix() and makes piix_init_one()
call ide_setup_pci_device() directly.
Signed-off-by: Tejun Heo <tj@home-tj.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

In drivers/ide/pci/opti612.[hc], init_setup_opti621() is
declared, defined and referenced but never actually used.
This patch removes the function.
Signed-off-by: Tejun Heo <tj@home-tj.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

In drivers/ide/pci/it8172.h, it8172_ratefilter() and
init_setup_it8172() are declared and the latter is referenced
in it8172_chipsets.  Both functions are not defined or used
anywhere.  This patch removes the prototypes and reference.
it8172 should be compilable now.
Signed-off-by: Tejun Heo <tj@home-tj.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Removes drivers/ide/pci/adma100.[hc].  The driver isn't
compilable (missing functions) and no Kconfig actually enables
CONFIG_BLK_DEV_ADMA100.

On Wed, 02 Feb 2005 03:31:59 -0500, Jeff Garzik <jgarzik@pobox.com> wrote:
> Also, the libata-dev-2.6 tree has an "ata_adma" driver which is
> complete, but needs some testing (and I have h/w).
Signed-off-by: Tejun Heo <tj@home-tj.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

This patch contains the following possible cleanups:
- make some needlessly global code static
- ide-dma.c: remove the unneeded EXPORT_SYMBOL(__ide_dma_test_irq)

slightly changed by me (bart)
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

From: Arjan van de Ven <arjan@infradead.org>

* make atapi_{input,output}_bytes() static, fix users to use drive->hwif
* remove ide_read_24() export; it's unused since the ide-io.c reorganization
* add a FIXME comment to the ide_fix_driveid() export

slightly changed by me (bart)
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

PPC_MULTIPLATFORM exists both for ppc32 and ppc64; chrp and pegasos,
OTOH, are ppc32-only.  The ifdef in via82cxxx should be for
PPC_MULTIPLATFORM and PPC32 - it makes no sense for ppc64 multiplatform
and, as the matter of fact, simply won't compile there.
Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

compile fix on sparc64 - missed pgd_val() bites now that we have
STRICT_MM_TYPECHECKS set.  Incidentally, shifting _by_ unsigned long is
useless - type of result is determined by the type of first argument... 
Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

I accidentally introduced a leak in there, because the end_io function
doesn't do a bio_put() like most others. Fortunately it's not critical,
as it only happens on the md super block read. So just drop the initial
bio_get(), since it's sync we can just bio_put() safely at the end after
it has completed.
Signed-off-by: Jens Axboe <axboe@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>