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scsi: megaraid_sas: Increase timeout by 1 sec for non-RAID fastpath IOs

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Hardware could time out Fastpath IOs one second earlier than the timeout
provided by the host.

For non-RAID devices, driver provides timeout value based on OS provided
timeout value. Under certain scenarios, if the OS provides a timeout
value of 1 second, due to above behavior hardware will timeout
immediately.

Increase timeout value for non-RAID fastpath IOs by 1 second.

Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Shivasharan S 2018-04-06 02:02:11 -07:00 • committed by Martin K. Petersen
parent 3c6c122cfc
commit 3239b8cd28
1 changed files with 3 additions and 0 deletions
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3
drivers/scsi/megaraid/megaraid_sas_fusion.c
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@ -2980,6 +2980,9 @@ megasas_build_syspd_fusion(struct megasas_instance *instance,
pRAID_Context->timeout_value = cpu_to_le16(os_timeout_value); pRAID_Context->timeout_value = cpu_to_le16(os_timeout_value);
pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id); pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id);
} else { } else {
if (os_timeout_value)
os_timeout_value++;
/* system pd Fast Path */ /* system pd Fast Path */
io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST; io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
timeout_limit = (scmd->device->type == TYPE_DISK) ? timeout_limit = (scmd->device->type == TYPE_DISK) ?