sas_function_template.smp_handler implementations either return
0 or a Unix error code. Convert that error code into a SCSI
result. This patch is what I came up with after having analyzed
the following sparse warnings:
drivers/scsi/scsi_transport_sas.c:187:21: warning: incorrect type in assignment (different base types)
drivers/scsi/scsi_transport_sas.c:187:21: expected restricted blk_status_t [usertype] ret
drivers/scsi/scsi_transport_sas.c:187:21: got int
drivers/scsi/scsi_transport_sas.c:188:39: warning: incorrect type in assignment (different base types)
drivers/scsi/scsi_transport_sas.c:188:39: expected int [signed] result
drivers/scsi/scsi_transport_sas.c:188:39: got restricted blk_status_t [usertype] ret
Fixes: commit 17d5363b83f8 ("scsi: introduce a result field in struct scsi_request")
Signed-off-by: Bart Van Assche <bart.vanassche@xxxxxxx>
Cc: Christoph Hellwig <hch@xxxxxx>
Cc: Hannes Reinecke <hare@xxxxxxx>
Cc: Johannes Thumshirn <jthumshirn@xxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx>
---
drivers/scsi/scsi_transport_sas.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/scsi/scsi_transport_sas.c b/drivers/scsi/scsi_transport_sas.c
index e2e948f1ce28..6c05fd9a0be5 100644
--- a/drivers/scsi/scsi_transport_sas.c
+++ b/drivers/scsi/scsi_transport_sas.c
@@ -173,7 +173,7 @@ static void sas_smp_request(struct request_queue *q, struct Scsi_Host *shost,
struct sas_rphy *rphy)
{
struct request *req;
- blk_status_t ret;
+ int ret;
int (*handler)(struct Scsi_Host *, struct sas_rphy *, struct request *);
while ((req = blk_fetch_request(q)) != NULL) {
@@ -185,7 +185,9 @@ static void sas_smp_request(struct request_queue *q, struct Scsi_Host *shost,
blk_rq_bytes(req->next_rq);
handler = to_sas_internal(shost->transportt)->f->smp_handler;
ret = handler(shost, rphy, req);
- scsi_req(req)->result = ret;
+ WARN_ONCE(ret != 0 && !IS_ERR_VALUE((uintptr_t)ret),
+ "%s: ret = %d\n", __func__, ret);
+ scsi_req(req)->result = ret ? DID_ERROR << 16 : 0;
blk_end_request_all(req, 0);
--
2.14.1