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authorK. Y. Srinivasan <kys@microsoft.com>2014-07-21 23:06:01 (GMT)
committerChristoph Hellwig <hch@lst.de>2014-07-25 21:23:25 (GMT)
commitf3cfabce7a2e92564d380de3aad4b43901fb7ae6 (patch)
treec3016681866e3af61ebc8b62653a6667513fabcc /drivers/scsi
parentea2aab2401576a7a2921f656d4184a0225aa138f (diff)
downloadlinux-f3cfabce7a2e92564d380de3aad4b43901fb7ae6.tar.xz
Drivers: add blist flags
Add blist flags to permit the reading of the VPD pages even when the target may claim SPC-2 compliance. MSFT targets currently claim SPC-2 compliance while they implement post SPC-2 features. With this patch we can correctly handle WRITE_SAME_16 issues. Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'drivers/scsi')
-rw-r--r--drivers/scsi/storvsc_drv.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c
index ed0f899..fecac5d0 100644
--- a/drivers/scsi/storvsc_drv.c
+++ b/drivers/scsi/storvsc_drv.c
@@ -327,6 +327,8 @@ MODULE_PARM_DESC(storvsc_ringbuffer_size, "Ring buffer size (bytes)");
*/
static int storvsc_timeout = 180;
+static int msft_blist_flags = BLIST_TRY_VPD_PAGES;
+
#define STORVSC_MAX_IO_REQUESTS 200
static void storvsc_on_channel_callback(void *context);
@@ -1449,6 +1451,14 @@ static int storvsc_device_configure(struct scsi_device *sdevice)
sdevice->no_write_same = 1;
+ /*
+ * Add blist flags to permit the reading of the VPD pages even when
+ * the target may claim SPC-2 compliance. MSFT targets currently
+ * claim SPC-2 compliance while they implement post SPC-2 features.
+ * With this patch we can correctly handle WRITE_SAME_16 issues.
+ */
+ sdevice->sdev_bflags |= msft_blist_flags;
+
return 0;
}