scsi: return blk_status_t from scsi_init_io and ->init_command
Replace the old BLKPREP_* values with the BLK_STS_ ones that they are
converted to later anyway.
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index 1f84e2c..3e3bdee 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -1005,7 +1005,8 @@ void scsi_io_completion(struct scsi_cmnd *cmd, unsigned int good_bytes)
scsi_io_completion_action(cmd, result);
}
-static int scsi_init_sgtable(struct request *req, struct scsi_data_buffer *sdb)
+static blk_status_t scsi_init_sgtable(struct request *req,
+ struct scsi_data_buffer *sdb)
{
int count;
@@ -1014,7 +1015,7 @@ static int scsi_init_sgtable(struct request *req, struct scsi_data_buffer *sdb)
*/
if (unlikely(sg_alloc_table_chained(&sdb->table,
blk_rq_nr_phys_segments(req), sdb->table.sgl)))
- return BLKPREP_DEFER;
+ return BLK_STS_RESOURCE;
/*
* Next, walk the list, and fill in the addresses and sizes of
@@ -1024,7 +1025,7 @@ static int scsi_init_sgtable(struct request *req, struct scsi_data_buffer *sdb)
BUG_ON(count > sdb->table.nents);
sdb->table.nents = count;
sdb->length = blk_rq_payload_bytes(req);
- return BLKPREP_OK;
+ return BLK_STS_OK;
}
/*
@@ -1034,25 +1035,25 @@ static int scsi_init_sgtable(struct request *req, struct scsi_data_buffer *sdb)
*
* Arguments: cmd - Command descriptor we wish to initialize
*
- * Returns: 0 on success
- * BLKPREP_DEFER if the failure is retryable
- * BLKPREP_KILL if the failure is fatal
+ * Returns: BLK_STS_OK on success
+ * BLK_STS_RESOURCE if the failure is retryable
+ * BLK_STS_IOERR if the failure is fatal
*/
-int scsi_init_io(struct scsi_cmnd *cmd)
+blk_status_t scsi_init_io(struct scsi_cmnd *cmd)
{
struct request *rq = cmd->request;
- int error = BLKPREP_KILL;
+ blk_status_t ret;
if (WARN_ON_ONCE(!blk_rq_nr_phys_segments(rq)))
- return BLKPREP_KILL;
+ return BLK_STS_IOERR;
- error = scsi_init_sgtable(rq, &cmd->sdb);
- if (error)
- return error;
+ ret = scsi_init_sgtable(rq, &cmd->sdb);
+ if (ret)
+ return ret;
if (blk_bidi_rq(rq)) {
- error = scsi_init_sgtable(rq->next_rq, rq->next_rq->special);
- if (error)
+ ret = scsi_init_sgtable(rq->next_rq, rq->next_rq->special);
+ if (ret)
goto out_free_sgtables;
}
@@ -1066,7 +1067,7 @@ int scsi_init_io(struct scsi_cmnd *cmd)
* queues a command to a device on an adapter
* that does not support DIX.
*/
- error = BLKPREP_KILL;
+ ret = BLK_STS_IOERR;
goto out_free_sgtables;
}
@@ -1074,7 +1075,7 @@ int scsi_init_io(struct scsi_cmnd *cmd)
if (sg_alloc_table_chained(&prot_sdb->table, ivecs,
prot_sdb->table.sgl)) {
- error = BLKPREP_DEFER;
+ ret = BLK_STS_RESOURCE;
goto out_free_sgtables;
}
@@ -1087,10 +1088,10 @@ int scsi_init_io(struct scsi_cmnd *cmd)
cmd->prot_sdb->table.nents = count;
}
- return BLKPREP_OK;
+ return BLK_STS_OK;
out_free_sgtables:
scsi_mq_free_sgtables(cmd);
- return error;
+ return ret;
}
EXPORT_SYMBOL(scsi_init_io);
@@ -1200,9 +1201,9 @@ static blk_status_t scsi_setup_scsi_cmnd(struct scsi_device *sdev,
* submit a request without an attached bio.
*/
if (req->bio) {
- int ret = scsi_init_io(cmd);
- if (unlikely(ret))
- return prep_to_mq(ret);
+ blk_status_t ret = scsi_init_io(cmd);
+ if (unlikely(ret != BLK_STS_OK))
+ return ret;
} else {
BUG_ON(blk_rq_bytes(req));
@@ -1233,7 +1234,7 @@ static blk_status_t scsi_setup_fs_cmnd(struct scsi_device *sdev,
cmd->cmnd = scsi_req(req)->cmd = scsi_req(req)->__cmd;
memset(cmd->cmnd, 0, BLK_MAX_CDB);
- return prep_to_mq(scsi_cmd_to_driver(cmd)->init_command(cmd));
+ return scsi_cmd_to_driver(cmd)->init_command(cmd);
}
static blk_status_t scsi_setup_cmnd(struct scsi_device *sdev,
