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scsi: mpt3sas: Do not use 32-bit atomic request descriptor for Ventura controllers.

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Sending I/O through 32 bit descriptors to Ventura series of controller
results in IO timeout on certain conditions. This error only occurs on
systems with high I/O activity.

Changes in this patch will prevent driver from using 32 bit descriptor
and use 64 bit Descriptors

Signed-off-by: Suganath Prabu S <suganath-prabu.subramani@broadcom.com>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Suganath Prabu S 2018-02-14 02:16:37 -08:00 • committed by Martin K. Petersen
commit 40114bde97
6 changed files with 54 additions and 178 deletions
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