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authorMartin K. Petersen <martin.petersen@oracle.com>2014-07-15 20:49:17 +0400
committerChristoph Hellwig <hch@lst.de>2014-07-26 01:16:41 +0400
commitc1d40a527e885a40bb9ea6c46a1b1145d42b66a0 (patch)
treebbe0eb4aae1aa3b36c8ff3ad1fd99bfdb62621f6 /drivers/scsi/scsi_scan.c
parentfd2eb9034e48cdca358dc06a833a736e7c6f68dd (diff)
downloadlinux-c1d40a527e885a40bb9ea6c46a1b1145d42b66a0.tar.xz
scsi: add a blacklist flag which enables VPD page inquiries
Despite supporting modern SCSI features some storage devices continue to claim conformance to an older version of the SPC spec. This is done for compatibility with legacy operating systems. Linux by default will not attempt to read VPD pages on devices that claim SPC-2 or older. Introduce a blacklist flag that can be used to trigger VPD page inquiries on devices that are known to support them. Reported-by: KY Srinivasan <kys@microsoft.com> Tested-by: KY Srinivasan <kys@microsoft.com> Reviewed-by: KY Srinivasan <kys@microsoft.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> CC: <stable@vger.kernel.org> Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'drivers/scsi/scsi_scan.c')
-rw-r--r--drivers/scsi/scsi_scan.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c
index a5a0bdeba857..50536cd6b3f2 100644
--- a/drivers/scsi/scsi_scan.c
+++ b/drivers/scsi/scsi_scan.c
@@ -928,7 +928,9 @@ static int scsi_add_lun(struct scsi_device *sdev, unsigned char *inq_result,
sdev->eh_timeout = SCSI_DEFAULT_EH_TIMEOUT;
- if (*bflags & BLIST_SKIP_VPD_PAGES)
+ if (*bflags & BLIST_TRY_VPD_PAGES)
+ sdev->try_vpd_pages = 1;
+ else if (*bflags & BLIST_SKIP_VPD_PAGES)
sdev->skip_vpd_pages = 1;
transport_configure_device(&sdev->sdev_gendev);