linux-toradex.git/drivers/scsi, branch v2.6.28.4

ibmvfc: Improve async event handling

2009-01-18T18:44:05+00:00

commit d2131b33c7e07c2905ee2f2321cc4dae1928c483 upstream.

While doing various error injection testing, such as cable
pulls and target moves, some issues were observed in handling
these events. This patch improves the way these events are handled
by increasing the delay waiting for the fabric to settle and also
changes the behavior of Link Up to break the CRQ to ensure everything
gets cleaned up properly on the VIOS.

Signed-off-by: Brian King 
Signed-off-by: James Bottomley 
Signed-off-by: Greg Kroah-Hartman

ibmvfc: Delay NPIV login retry and add retries

2009-01-18T18:44:05+00:00

commit 1c41fa8288277e76785acb50f52bb2f39509f903 upstream.

Adds a delay prior to retrying a failed NPIV login. This fixes
a scenario if the backing fibre channel adapter is getting reset
due to an EEH event, NPIV login will fail. Currently, ibmvfc
retries three times very quickly, resets the CRQ and tries one
more time. If the adapter is getting reset due to EEH, this isn't
enough time. This adds a delay prior to retrying a failed NPIV
login and also increments the number of retries.

Signed-off-by: Brian King 
Signed-off-by: James Bottomley 
Signed-off-by: Greg Kroah-Hartman

mvsas: increase port type detection delay to suit Seagate's 10k6 drive ST3450856SS 0003

2009-01-18T18:44:04+00:00

commit ddccf307a3599e452804e228d8ed30fba578923e upstream.

I increased the delay step by step until loading of mvsas
reliably detected the drive 200 times in sequence. A much better
approach would be to monitor the hardware for some flag which
indicates that port detection has finished, but I do not have any
hardware documentation.

Signed-off-by: Reinhard Nissl 
Cc: Ke Wei 
Signed-off-by: James Bottomley 
Signed-off-by: Greg Kroah-Hartman

SCSI: aha152x_cs: Fix regression that keeps driver from using shared interrupts

2009-01-18T18:43:48+00:00

commit 58607b30fc0f2230a189500112c7a7cca02804cf upstream.

At some point since 2.6.22, the aha152x_cs driver stopped working and
started erring on load with the following messages:

kernel: pcmcia: request for exclusive IRQ could not be fulfilled.
kernel: pcmcia: the driver needs updating to supported shared IRQ lines.

With the following change, the driver works with shared IRQs.

Signed-off-by: Larry Finger 
Signed-off-by: James Bottomley 
Signed-off-by: Greg Kroah-Hartman

SCSI: eata: fix the data buffer accessors conversion regression

2009-01-18T18:43:45+00:00

commit 20c09df7eb9c92a40e0ecf654b6e8f14c8583b9e upstream.

This fixes the regression introduced by the commit
58e2a02eb18393e76a469580fedf7caec190eb5e (eata: convert to use the
data buffer accessors), reported:

http://marc.info/?t=122987621300006&r=1&w=2

- fix DMA_NONE handling in map_dma()

- this driver can't use scsi_dma_map since host->shost_gendev.parent
is not set properly (it uses scsi_register).

Signed-off-by: FUJITA Tomonori 
Reported-by: Arthur Marsh 
Tested-by: Arthur Marsh 
Signed-off-by: James Bottomley 
Signed-off-by: Greg Kroah-Hartman

Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6

2008-12-19T19:37:23+00:00

* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6:
  [SCSI] mpt fusion: clear list of outstanding commands on host reset
  [SCSI] scsi_lib: only call scsi_unprep_request() under queue lock
  [SCSI] ibmvstgt: move crq_queue_create to the end of initialization
  [SCSI] libiscsi REGRESSION: fix passthrough support with older iscsi tools
  [SCSI] aacraid: disable Dell Percraid quirk on Adaptec 2200S and 2120S

[SCSI] scsi_lib: only call scsi_unprep_request() under queue lock

2008-12-13T20:31:03+00:00

It's called under that lock everywhere else and it does alter the
request state, so it should be.

This one occurance in scsi_requeue_command() could open a window where
req->special is set to NULL while the requests is going through either
timeout or completion processing leading to NULL pointer derefs of the
sort complained of in bugzillas 12020 and 12195.

Signed-off-by: James Bottomley

Commands needing to be retried require a complete re-initialization.

2008-12-12T15:04:26+00:00

The test-unit-ready portion of this patch was causing boots to fail on
my test machine (as in http://lkml.org/lkml/2008/12/5/161). With this
patch in place, the system is booting reliably.

Mike Anderson found the same problem in the hp_hw_start_stop code,
and I applied the same solution in cdrom_read_cdda_bpc.

Signed-off-by: Alan D. Brunelle 
Cc: Mike Anderson 
Signed-off-by: Jens Axboe

[SCSI] ibmvstgt: move crq_queue_create to the end of initialization

2008-12-09T15:45:30+00:00

Calling crq_queue_create could lead to the creation of a rport. We
need to set up everything before creating a rport. This moves
crq_queue_create to the end of initialization to avoid a race which
causes an oops if lost.

Signed-off-by: Brian King 
Signed-off-by: FUJITA Tomonori 
Reported-by: Olaf Hering 
Cc: stable@kernel.org
Signed-off-by: James Bottomley

[PATCH 1/2] kill FMODE_NDELAY_NOW

2008-12-04T09:22:57+00:00

Update FMODE_NDELAY before each ioctl call so that we can kill the
magic FMODE_NDELAY_NOW.  It would be even better to do this directly
in setfl(), but for that we'd need to have FMODE_NDELAY for all files,
not just block special files.

Signed-off-by: Christoph Hellwig 
Signed-off-by: Al Viro