4.17-stable review patch. If anyone has any objections, please let me know.
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From: Shivasharan S shivasharan.srikanteshwara@broadcom.com
[ 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 --- 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 @@ -2981,6 +2981,9 @@ megasas_build_syspd_fusion(struct megasa pRAID_Context->timeout_value = cpu_to_le16(os_timeout_value); pRAID_Context->virtual_disk_tgt_id = 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) ?