[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>

diff --git a/drivers/scsi/megaraid/megaraid_sas.c b/drivers/scsi/megaraid/megaraid_sas.c
index a39addc..6fd1e17 100644 (file)
--- 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) {