[SCSI] mpt2sas : release diagnotic buffers prior host reset

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Diagnostic buffer support is already there in the driver.  This support allows
applications to pull ring buffers from controller firmware for debugging
firmware related issues.

What this patch does is sends reqeust to firmware to release the buffers prior
to host reset.   This will allow what ever debug info is there prior to reset
to be dma'd to host memory. With out this fix, some of the debug data would
been lost.

Signed-off-by: Eric Moore <eric.moore@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

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This commit is contained in:

Eric Moore 2009-04-21 15:42:13 -06:00 • committed by James Bottomley

parent 8901cbb45e

commit 99bb214b1b

2 changed files with 141 additions and 70 deletions

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208

drivers/scsi/mpt2sas/mpt2sas_ctl.c

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5

drivers/scsi/mpt2sas/mpt2sas_ctl.h

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