linux.git/drivers/scsi/aacraid, branch v3.10.76

SCSI: Disable WRITE SAME for RAID and virtual host adapter drivers

2013-12-12T06:36:28+00:00

commit 54b2b50c20a61b51199bedb6e5d2f8ec2568fb43 upstream.

Some host adapters do not pass commands through to the target disk
directly. Instead they provide an emulated target which may or may not
accurately report its capabilities. In some cases the physical device
characteristics are reported even when the host adapter is processing
commands on the device's behalf. This can lead to adapter firmware hangs
or excessive I/O errors.

This patch disables WRITE SAME for devices connected to host adapters
that provide an emulated target. Driver writers can disable WRITE SAME
by setting the no_write_same flag in the host adapter template.

[jejb: fix up rejections due to eh_deadline patch]
Signed-off-by: Martin K. Petersen 
Signed-off-by: James Bottomley 
Signed-off-by: Greg Kroah-Hartman

aacraid: prevent invalid pointer dereference

2013-11-29T19:11:40+00:00

commit b4789b8e6be3151a955ade74872822f30e8cd914 upstream.

It appears that driver runs into a problem here if fibsize is too small
because we allocate user_srbcmd with fibsize size only but later we
access it until user_srbcmd->sg.count to copy it over to srbcmd.

It is not correct to test (fibsize < sizeof(*user_srbcmd)) because this
structure already includes one sg element and this is not needed for
commands without data.  So, we would recommend to add the following
(instead of test for fibsize == 0).

Signed-off-by: Mahesh Rajashekhara 
Reported-by: Nico Golde 
Reported-by: Fabian Yamaguchi 
Signed-off-by: Linus Torvalds 
Cc: Kees Cook 
Signed-off-by: Greg Kroah-Hartman

aacraid: missing capable() check in compat ioctl

2013-11-13T03:05:33+00:00

commit f856567b930dfcdbc3323261bf77240ccdde01f5 upstream.

In commit d496f94d22d1 ('[SCSI] aacraid: fix security weakness') we
added a check on CAP_SYS_RAWIO to the ioctl.  The compat ioctls need the
check as well.

Signed-off-by: Dan Carpenter 
Signed-off-by: Linus Torvalds 
Signed-off-by: Greg Kroah-Hartman

SCSI: aacraid: Fix for arrays are going offline in the system. System hangs

2013-07-25T21:07:30+00:00

commit c5bebd829dd95602c15f8da8cc50fa938b5e0254 upstream.

One of the customer had reported that the set of raid logical arrays will
become unavailable (I/O offline) after a long hours of IO stress test.  The OS
wouldn`t be accessible afterwards and require a hard reset.

This driver patch has a fix for race condition between the doorbell and the
circular buffer. The driver is modified to do an extra read after clearing the
doorbell in case there had been a completion posted during the small timing
window.

With this fix, we ran IO stress for ~13 days. There were no IO failures.

Signed-off-by: Mahesh Rajashekhara 
Signed-off-by: James Bottomley 
Signed-off-by: Greg Kroah-Hartman

[SCSI] aacraid: Dual firmware image support

2013-04-10T18:55:52+00:00

This patch adds dual flash firmware support for Series 7 and above controllers.

[thenzl: used ssleep(10) instead udelay]
Signed-off-by: Mahesh Rajashekhara 
Reviewed-by: Tomas Henzl 
Signed-off-by: James Bottomley

[SCSI] aacraid: suppress two GCC warnings

2013-02-24T09:38:10+00:00

Building src.o for a 32 bit system triggers two GCC warnings:
    drivers/scsi/aacraid/src.c: In function ‘aac_src_deliver_message’:
    drivers/scsi/aacraid/src.c:410:3: warning: right shift count >= width of type [enabled by default]
    drivers/scsi/aacraid/src.c:434:2: warning: right shift count >= width of type [enabled by default]

These warnings are caused by a right shift of 32. Use upper_32_bits() to
suppress them.

Signed-off-by: Paul Bolle 
Cc: Mahesh Rajashekhara 
Signed-off-by: James Bottomley

[SCSI] aacraid: 1024 max outstanding command support for Series 7 and above

2013-01-30T03:07:48+00:00

Signed-off-by: Mahesh Rajashekhara 
Signed-off-by: James Bottomley

Drivers: scsi: remove __dev* attributes.

2013-01-03T23:57:01+00:00

CONFIG_HOTPLUG is going away as an option.  As a result, the __dev*
markings need to be removed.

This change removes the use of __devinit, __devexit_p, __devinitdata,
__devinitconst, and __devexit from these drivers.

Based on patches originally written by Bill Pemberton, but redone by me
in order to handle some of the coding style issues better, by hand.

Cc: Bill Pemberton 
Cc: Adam Radford 
Cc: "James E.J. Bottomley" 
Signed-off-by: Greg Kroah-Hartman

[SCSI] aacraid: SCSI dma mapping failure case handling

2012-11-27T04:59:46+00:00

This patch handles SCSI dma mapping failure case. Reporting error code to the
upper layer instead of BUG_ON().

Signed-off-by: Mahesh Rajashekhara 
Reviewed-by: Tomas Henzl 
Signed-off-by: James Bottomley

sections: fix section conflicts in drivers/scsi

2012-10-05T18:04:44+00:00

Signed-off-by: Andi Kleen 
Cc: James Bottomley 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds