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Subject[PATCH 1/1] Drivers: scsi: storvsc: Add blist flags
Date
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>
---
drivers/scsi/storvsc_drv.c | 10 ++++++++++
1 files changed, 10 insertions(+), 0 deletions(-)

diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c
index 29d0329..15ba695 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;
}

--
1.7.4.1


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