[SCSI] ibmvfc: Fix command timeouts due to cached CRQ access

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The CRQs used by the ibmvfc driver are read and written by both
the client and the server. Therefore, we need to mark them volatile
so that we do not cache their contents when handling an interrupt.
This fixes a problem which can surface as occasional command timeouts.
No commands were actually timing out, but due to accessing cached data
for the CRQ in the interrupt handler, the interrupt was not processing
all command completions as it should.

Signed-off-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

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Brian King 2008-11-14 13:33:52 -06:00 • committed by James Bottomley

parent 4081b77c3a

commit 5919ce2908

1 changed files with 8 additions and 8 deletions

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drivers/scsi/ibmvscsi/ibmvfc.h

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