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authorShivasharan S <shivasharan.srikanteshwara@broadcom.com>2018-04-06 02:02:11 -0700
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2018-08-03 07:55:26 +0200
commit6e8738c1c1037d36c317a65fd41ce1c812f5d9f4 (patch)
tree6668c0b4ef22b015cc6be545d130caf3f2b59fac
parent6337861a0f0304faa7806719ce73b994db246b7c (diff)
scsi: megaraid_sas: Increase timeout by 1 sec for non-RAID fastpath IOs
[ 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@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--drivers/scsi/megaraid/megaraid_sas_fusion.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.c b/drivers/scsi/megaraid/megaraid_sas_fusion.c
index a156451553a7..f722a0e6caa4 100644
--- a/drivers/scsi/megaraid/megaraid_sas_fusion.c
+++ b/drivers/scsi/megaraid/megaraid_sas_fusion.c
@@ -2031,6 +2031,9 @@ megasas_build_syspd_fusion(struct megasas_instance *instance,
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) ?