[SCSI] megaraid_sas: tape drive support fix

Add the Tape drive fix to the megaraid_sas driver: If the command is
for the tape device, set the FW pthru timeout to the os layer timeout
value.

Signed-off-by Bo Yang<bo.yang@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

1 files changed, 11 insertions, 0 deletions

diff --git a/drivers/scsi/megaraid/megaraid_sas.c b/drivers/scsi/megaraid/megaraid_sas.c
index a39addc3a59..6fd1e179602 100644
--- a/drivers/scsi/megaraid/megaraid_sas.c
+++ b/drivers/scsi/megaraid/megaraid_sas.c
@@ -687,6 +687,17 @@ megasas_build_dcdb(struct megasas_instance *instance, struct scsi_cmnd *scp,
         memcpy(pthru->cdb, scp->cmnd, scp->cmd_len);
 
         /*
+        * If the command is for the tape device, set the
+        * pthru timeout to the os layer timeout value.
+        */
+        if (scp->device->type == TYPE_TAPE) {
+                if ((scp->request->timeout / HZ) > 0xFFFF)
+                        pthru->timeout = 0xFFFF;
+                else
+                        pthru->timeout = scp->request->timeout / HZ;
+        }
+
+        /*
          * Construct SGL
          */
         if (IS_DMA64) {