4.4-stable review patch. If anyone has any objections, please let me know.
------------------
From: Shivasharan S <shivasharan.srikanteshwara@xxxxxxxxxxxx>
[ Upstream commit 3239b8cd28fd849a2023483257d35d68c5876c74 ]
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@xxxxxxxxxxxx>
Signed-off-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/scsi/megaraid/megaraid_sas_fusion.c | 3 +++
1 file changed, 3 insertions(+)
--- a/drivers/scsi/megaraid/megaraid_sas_fusion.c
+++ b/drivers/scsi/megaraid/megaraid_sas_fusion.c
@@ -1886,6 +1886,9 @@ megasas_build_syspd_fusion(struct megasa
pRAID_Context->timeoutValue = cpu_to_le16(os_timeout_value);
pRAID_Context->VirtualDiskTgtId = cpu_to_le16(device_id);
} else {
+ if (os_timeout_value)
+ os_timeout_value++;
+
/* system pd Fast Path */
io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
timeout_limit = (scmd->device->type == TYPE_DISK) ?
