Commit 27db682b authored by Mike Christie's avatar Mike Christie Committed by James Bottomley

[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: default avatarMike Christie <michaelc@cs.wisc.edu>
Signed-off-by: default avatarJames Bottomley <JBottomley@Parallels.com>
parent 4f0e359c
......@@ -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,
......
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