linux-kernel - [PATCH 60/75] [SCSI] Don't attempt to send extended INQUIRY command if skip_vpd

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Date:	Wed, 14 Aug 2013 11:36:49 +0100
From:	Luis Henriques <luis.henriques@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	"Martin K. Petersen" <martin.petersen@...cle.com>,
	James Bottomley <JBottomley@...allels.com>,
	Luis Henriques <luis.henriques@...onical.com>
Subject: [PATCH 60/75] [SCSI] Don't attempt to send extended INQUIRY command if skip_vpd_pages is set

3.5.7.19 -stable review patch.  If anyone has any objections, please let me know.

------------------

From: "Martin K. Petersen" <martin.petersen@...cle.com>

commit 7562523e84ddc742fe1f9db8bd76b01acca89f6b upstream.

If a device has the skip_vpd_pages flag set we should simply fail the
scsi_get_vpd_page() call.

Signed-off-by: Martin K. Petersen <martin.petersen@...cle.com>
Acked-by: Alan Stern <stern@...land.harvard.edu>
Tested-by: Stuart Foster <smf.linux@...world.com>
Signed-off-by: James Bottomley <JBottomley@...allels.com>
Signed-off-by: Luis Henriques <luis.henriques@...onical.com>
---
 drivers/scsi/scsi.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/scsi/scsi.c b/drivers/scsi/scsi.c
index bbbc9c9..203c7c5 100644
--- a/drivers/scsi/scsi.c
+++ b/drivers/scsi/scsi.c
@@ -1029,6 +1029,9 @@ int scsi_get_vpd_page(struct scsi_device *sdev, u8 page, unsigned char *buf,
 {
 	int i, result;
 
+	if (sdev->skip_vpd_pages)
+		goto fail;
+
 	/* Ask for all the pages supported by this device */
 	result = scsi_vpd_inquiry(sdev, buf, 0, buf_len);
 	if (result)
-- 
1.8.3.2

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