From: Yang, Bo <Bo.Yang@lsi.com>
Date: Tue, 6 Oct 2009 20:12:21 +0000 (-0600)
Subject: [SCSI] megaraid_sas: tape drive support fix
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=8d56825321339f0ef7ad08eb58332e1836881e3b;p=deliverable%2Flinux.git

[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 a39addc3a596..6fd1e1796029 100644
--- a/drivers/scsi/megaraid/megaraid_sas.c
+++ b/drivers/scsi/megaraid/megaraid_sas.c
@@ -686,6 +686,17 @@ 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
 	 */