scsi: mpt3sas: Do not use 32-bit atomic request descriptor for Ventura controllers.
authorSuganath Prabu S <suganath-prabu.subramani@broadcom.com>
Wed, 14 Feb 2018 10:16:37 +0000 (02:16 -0800)
committerMartin K. Petersen <martin.petersen@oracle.com>
Wed, 28 Feb 2018 03:26:16 +0000 (22:26 -0500)
commit40114bde9773ccaf9ad77233ac2cc9039f0f2941
tree4ef383b5438d69e314144dfa642e73c9d6d75998
parentb4472d7180894c96b6133ef5ff3df50836591eaa
scsi: mpt3sas: Do not use 32-bit atomic request descriptor for Ventura controllers.

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>
drivers/scsi/mpt3sas/mpt3sas_base.c
drivers/scsi/mpt3sas/mpt3sas_base.h
drivers/scsi/mpt3sas/mpt3sas_config.c
drivers/scsi/mpt3sas/mpt3sas_ctl.c
drivers/scsi/mpt3sas/mpt3sas_scsih.c
drivers/scsi/mpt3sas/mpt3sas_transport.c