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>

1 files changed, 10 insertions, 0 deletions

diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c
index ed0f899e8aa5..fecac5d03fdd 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;
 }