linux-toradex.git/drivers/scsi/aacraid/commsup.c, branch v2.6.33.16

[SCSI] aacraid: fix File System going into read-only mode

2010-01-17T18:16:17+00:00

These particular problems were reported by Cisco and SAP and customers
as well. Cisco reported on RHEL4 U6 and SAP reported on SLES9 SP4 and
SLES10 SP2. We added these fixes on RHEL4 U6 and gave a private build
to IBM and Cisco. Cisco and IBM tested it for more than 15 days and
they reported that they did not see the issue so far. Before the fix,
Cisco used to see the issue within 5 days. We generated a patch for
SLES9 SP4 and SLES10 SP2 and submitted to Novell. Novell applied the
patch and gave a test build to SAP. SAP tested and reported that the
build is working properly.

We also tested in our lab using the tools "dishogsync", which is IO
stress tool and the tool was provided by Cisco.

Issue1:  File System going into read-only mode

Root cause: The driver tends to not free the memory (FIB) when the
management request exits prematurely. The accumulation of such
un-freed memory causes the driver to fail to allocate anymore memory
(FIB) and hence return 0x70000 value to the upper layer, which puts
the file system into read only mode.

Fix details: The fix makes sure to free the memory (FIB) even if the
request exits prematurely hence ensuring the driver wouldn't run out
of memory (FIBs).


Issue2: False Raid Alert occurs

When the Physical Drives and Logical drives are reported as deleted or
added, even though there is no change done on the system

Root cause: Driver IOCTLs is signaled with EINTR while waiting on
response from the lower layers. Returning "EINTR" will never initiate
internal retry.

Fix details: The issue was fixed by replacing "EINTR" with
"ERESTARTSYS" for mid-layer retries.

Signed-off-by: Penchala Narasimha Reddy 
Signed-off-by: James Bottomley

dma-mapping: replace all DMA_31BIT_MASK macro with DMA_BIT_MASK(31)

2009-04-07T15:31:11+00:00

Replace all DMA_31BIT_MASK macro with DMA_BIT_MASK(31)

Signed-off-by: Yang Hongyang
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

dma-mapping: replace all DMA_32BIT_MASK macro with DMA_BIT_MASK(32)

2009-04-07T15:31:11+00:00

Replace all DMA_32BIT_MASK macro with DMA_BIT_MASK(32)

Signed-off-by: Yang Hongyang
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[SCSI] Clean up my email address and use a single standard address for everything

2008-12-29T17:24:12+00:00

Signed-off-by: Alan Cox 
Signed-off-by: James Bottomley

[SCSI] aacraid: Fix jbod operations scan issues

2008-05-02T18:06:09+00:00

As JBOD devices (really just Simple Single Drive Volumes exported to
the SCSI channel) are managed, they fail to update correctly when the
driver triggers a SCSI scan. In addition, the ability to change
multiple arrays or JBODs at the same time was resulting in dropped
scans, set up a mechanism to issue a list of single target scans on a
single configuration change notification from the Firmware.

Performed some additional sundry cosmetic code style cleanups.

Signed-off-by: Mark Salyzyn 
Signed-off-by: James Bottomley

[SCSI] aacraid: Fix down_interruptible() to check the return value correctly

2008-05-02T15:16:28+00:00

On Apr 21, 2008, at 8:42 PM, Yinghai Lu wrote:
> bisected to:
>
> commit e6990c6448ca9359b6d4ad027c0a6efbf4379e64
> Author: Mark Salyzyn 
> Date:   Mon Apr 14 14:20:16 2008 -0400
>
>    [SCSI] aacraid: Fix down_interruptible() to check the return value

The return value for down_interruptible was incorrectly checked!
updated patch enclosed.

Signed-off-by: Mark Salyzyn 
Signed-off-by: James Bottomley

Convert asm/semaphore.h users to linux/semaphore.h

2008-04-19T02:22:54+00:00

Signed-off-by: Matthew Wilcox

[SCSI] aacraid: Fix down_interruptible() to check the return value

2008-04-16T14:32:43+00:00

Instead of ignoring the return value in aac_fib_send() return 2 to
indicate to the layers above that fib transmission was aborted due to
timeout.

Signed-off-by: Mark Salyzyn 
Signed-off-by: James Bottomley

[SCSI] aacraid, ips: leX_add_cpu conversion

2008-04-07T17:19:05+00:00

replace all:
little_endian_variable = cpu_to_leX(leX_to_cpu(little_endian_variable) +
					expression_in_cpu_byteorder);
with:
	leX_add_cpu(&little_endian_variable, expression_in_cpu_byteorder);
generated with semantic patch

Signed-off-by: Marcin Slusarz 
Acked-by: "Salyzyn, Mark" 
Signed-off-by: Andrew Morton 
Signed-off-by: James Bottomley

[SCSI] aacraid: ignore adapter reset check polarity

2008-02-11T16:20:54+00:00

The Adapter's Ignore Reset flag and insmod parameter boolean polarity
is incorrect in the driver.

Signed-off-by: Mark Salyzyn 
Signed-off-by: James Bottomley