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| author | Subhash Jadavani <subhashj@codeaurora.org> | 2014-09-25 14:32:19 +0200 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2014-10-01 13:11:03 +0200 |
| commit | 45341ca3fcacc8720c425e757a627ef81b65b1ee (patch) | |
| tree | 2d9d1f3e7a4944c77f534834be0e92e8c91cfc8a /drivers/scsi | |
| parent | scsi_debug: deadlock between completions and surprise module removal (diff) | |
| download | linux-45341ca3fcacc8720c425e757a627ef81b65b1ee.tar.xz linux-45341ca3fcacc8720c425e757a627ef81b65b1ee.zip | |
scsi: fix the type for well known LUs
Some devices may respond with wrong type for well-known logical units.
This patch forces well-known type for devices which doesn't report it
correct.
Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org>
Signed-off-by: Sujit Reddy Thumma <sthumma@codeaurora.org>
Signed-off-by: Dolev Raviv <draviv@codeaurora.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'drivers/scsi')
| -rw-r--r-- | drivers/scsi/scsi_scan.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c index f84c40188478..dde0c542e0b1 100644 --- a/drivers/scsi/scsi_scan.c +++ b/drivers/scsi/scsi_scan.c @@ -815,6 +815,19 @@ static int scsi_add_lun(struct scsi_device *sdev, unsigned char *inq_result, } else { sdev->type = (inq_result[0] & 0x1f); sdev->removable = (inq_result[1] & 0x80) >> 7; + + /* + * some devices may respond with wrong type for + * well-known logical units. Force well-known type + * to enumerate them correctly. + */ + if (scsi_is_wlun(sdev->lun) && sdev->type != TYPE_WLUN) { + sdev_printk(KERN_WARNING, sdev, + "%s: correcting incorrect peripheral device type 0x%x for W-LUN 0x%16xhN\n", + __func__, sdev->type, (unsigned int)sdev->lun); + sdev->type = TYPE_WLUN; + } + } if (sdev->type == TYPE_RBC || sdev->type == TYPE_ROM) { |