scsi: mptsas: Disable WRITE SAME

commit 94e5395d2403c8bc2504a7cbe4c4caaacb7b8b84 upstream.

First generation MPT Fusion controllers can not translate WRITE SAME
when the attached device is a SATA drive. Disable WRITE SAME support.

Reported-by: Nikola Ciprich <nikola.ciprich@linuxbox.cz>
Cc: <stable@vger.kernel.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/message/fusion/mptsas.c b/drivers/message/fusion/mptsas.c
index 345f603..f1d9367 100644 (file)
--- a/drivers/message/fusion/mptsas.c
+++ b/drivers/message/fusion/mptsas.c
@@ -1995,6 +1995,7 @@ static struct scsi_host_template mptsas_driver_template = {
        .cmd_per_lun                    = 7,
        .use_clustering                 = ENABLE_CLUSTERING,
        .shost_attrs                    = mptscsih_host_attrs,
+       .no_write_same                  = 1,
 };
 
 static int mptsas_get_linkerrors(struct sas_phy *phy)