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| author | Mike Christie <michaelc@cs.wisc.edu> | 2013-03-06 08:40:24 +0400 |
|---|---|---|
| committer | James Bottomley <JBottomley@Parallels.com> | 2013-04-10 07:55:21 +0400 |
| commit | 27db682bf07fdc105af38827dbbd67d6f0a4ae04 (patch) | |
| tree | a7339c6e87cabfcd5fa27b0a47611cae93588074 /drivers/scsi/device_handler | |
| parent | 4f0e359c939e4c217aea3a294b7356d60c351e35 (diff) | |
| download | linux-27db682bf07fdc105af38827dbbd67d6f0a4ae04.tar.xz | |
[SCSI] scsi_dh_alua: fix stpg sense handling
For the stpg_endio path we are not evaluating the sense. The bug
is that
1. The error value is set to -EIO when there is sense, so we hit the first
error check and always return SCSI_DH_IO.
2. h->senselen is set to zero in submit_stpg. It is not later set to
req->sense_len like in the synchrounous exection paths, so we must
check the req->sense_len field.
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'drivers/scsi/device_handler')
| -rw-r--r-- | drivers/scsi/device_handler/scsi_dh_alua.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/drivers/scsi/device_handler/scsi_dh_alua.c b/drivers/scsi/device_handler/scsi_dh_alua.c index 6f4d8e6f32f1..6648ffbb121a 100644 --- a/drivers/scsi/device_handler/scsi_dh_alua.c +++ b/drivers/scsi/device_handler/scsi_dh_alua.c @@ -232,13 +232,13 @@ static void stpg_endio(struct request *req, int error) struct scsi_sense_hdr sense_hdr; unsigned err = SCSI_DH_OK; - if (error || host_byte(req->errors) != DID_OK || - msg_byte(req->errors) != COMMAND_COMPLETE) { + if (host_byte(req->errors) != DID_OK || + msg_byte(req->errors) != COMMAND_COMPLETE) { err = SCSI_DH_IO; goto done; } - if (h->senselen > 0) { + if (req->sense_len > 0) { err = scsi_normalize_sense(h->sense, SCSI_SENSE_BUFFERSIZE, &sense_hdr); if (!err) { @@ -255,7 +255,9 @@ static void stpg_endio(struct request *req, int error) ALUA_DH_NAME, sense_hdr.sense_key, sense_hdr.asc, sense_hdr.ascq); err = SCSI_DH_IO; - } + } else if (error) + err = SCSI_DH_IO; + if (err == SCSI_DH_OK) { h->state = TPGS_STATE_OPTIMIZED; sdev_printk(KERN_INFO, h->sdev, |