@@ -1701,6 +1701,43 @@ static char sd_pr_type(enum pr_type type)
}
};
+static int sd_scsi_to_pr_err(struct scsi_sense_hdr *sshdr, int result)
+{
+ int err = PR_STS_IOERR;
+
+ switch host_byte(result) {
+ case DID_TRANSPORT_MARGINAL:
+ case DID_TRANSPORT_DISRUPTED:
+ case DID_BUS_BUSY:
+ err = PR_STS_RETRY_PATH_FAILURE;
+ goto done;
+ case DID_NO_CONNECT:
+ err = PR_STS_PATH_FAILED;
+ goto done;
+ case DID_TRANSPORT_FAILFAST:
+ err = PR_STS_PATH_FAST_FAILED;
+ goto done;
+ }
+
+ switch (status_byte(result)) {
+ case SAM_STAT_RESERVATION_CONFLICT:
+ err = PR_STS_RESERVATION_CONFLICT;
+ goto done;
+ case SAM_STAT_CHECK_CONDITION:
+ if (!scsi_sense_valid(sshdr))
+ goto done;
+
+ if (sshdr->sense_key == ILLEGAL_REQUEST &&
+ (sshdr->asc == 0x26 || sshdr->asc == 0x24)) {
+ err = -EINVAL;
+ goto done;
+ }
+ }
+
+done:
+ return err;
+}
+
static int sd_pr_command(struct block_device *bdev, u8 sa,
u64 key, u64 sa_key, u8 type, u8 flags)
{
@@ -1729,7 +1766,10 @@ static int sd_pr_command(struct block_device *bdev, u8 sa,
scsi_print_sense_hdr(sdev, NULL, &sshdr);
}
- return result;
+ if (result <= 0)
+ return result;
+
+ return sd_scsi_to_pr_err(&sshdr, result);
}
static int sd_pr_register(struct block_device *bdev, u64 old_key, u64 new_key,
@@ -121,6 +121,7 @@ enum scsi_disposition {
* msg_byte (unused)
* host_byte = set by low-level driver to indicate status.
*/
+#define status_byte(result) (result & 0xff)
#define host_byte(result) (((result) >> 16) & 0xff)
#define sense_class(sense) (((sense) >> 4) & 0x7)