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| author | James Bottomley <James.Bottomley@HansenPartnership.com> | 2008-08-21 22:14:14 +0200 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@HansenPartnership.com> | 2008-08-29 16:19:11 +0200 |
| commit | 01b291bd66564b4bd826326af6bd0b6d17e99439 (patch) | |
| tree | 89ba1f339a68827c1ea0e434629759a9252b0a69 /drivers/scsi | |
| parent | [SCSI] make scsi_check_sense HARDWARE_ERROR return ADD_TO_MLQUEUE on retry (diff) | |
| download | linux-01b291bd66564b4bd826326af6bd0b6d17e99439.tar.xz linux-01b291bd66564b4bd826326af6bd0b6d17e99439.zip | |
[SCSI] fix check of PQ and PDT bits for WLUNs
For IBM z series certain LUNs can no longer be accessed.
This is because kernel version 2.6.19 a check was introduced not to
create a generic SCSI device for devices that return PQ=1 and
PDT=0x1f. For WLUNs (see SAM-3, p. 41ff) generic SCSI devices should
be created unconditionally without looking at the PQ bit, so add a
check for WLUNs in with this test.
Acked-by: Martin Petermann <martin@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Diffstat (limited to 'drivers/scsi')
| -rw-r--r-- | drivers/scsi/scsi_scan.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c index 84b4879cff11..34d0de6cd511 100644 --- a/drivers/scsi/scsi_scan.c +++ b/drivers/scsi/scsi_scan.c @@ -1080,7 +1080,8 @@ static int scsi_probe_and_add_lun(struct scsi_target *starget, * PDT=1Fh none (no FDD connected to the requested logical unit) */ if (((result[0] >> 5) == 1 || starget->pdt_1f_for_no_lun) && - (result[0] & 0x1f) == 0x1f) { + (result[0] & 0x1f) == 0x1f && + !scsi_is_wlun(lun)) { SCSI_LOG_SCAN_BUS(3, printk(KERN_INFO "scsi scan: peripheral device type" " of 31, no device added\n")); |