linux-kernel - [ 01/17] SCSI: Dont attempt to send extended INQUIRY command if skip_vpd

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Message-Id: <20130813063501.839896135@linuxfoundation.org>
Date:	Mon, 12 Aug 2013 23:35:47 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org,
	"Martin K. Petersen" <martin.petersen@...cle.com>,
	Alan Stern <stern@...land.harvard.edu>,
	Stuart Foster <smf.linux@...world.com>,
	James Bottomley <JBottomley@...allels.com>
Subject: [ 01/17] SCSI: Dont attempt to send extended INQUIRY command if skip_vpd_pages is set

3.4-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: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/scsi/scsi.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/drivers/scsi/scsi.c
+++ b/drivers/scsi/scsi.c
@@ -1025,6 +1025,9 @@ int scsi_get_vpd_page(struct scsi_device
 {
 	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)


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