scsi: core: Change the type of the second argument of scsi_host_complete_all_commands()

Allow the compiler to verify the type of the second argument passed to
scsi_host_complete_all_commands().

Link: https://lore.kernel.org/r/[e-mail]
Cc: Hannes Reinecke <[e-mail]>
Cc: John Garry <[e-mail]>
Reviewed-by: Himanshu Madhani <[e-mail]>
Signed-off-by: Bart Van Assche <[e-mail]>
Signed-off-by: Martin K. Petersen <[e-mail]>

drivers/scsi/hosts.c

···
 static bool complete_all_cmds_iter(struct request *rq, void *data, bool rsvd)
 {
 	struct scsi_cmnd *scmd = blk_mq_rq_to_pdu(rq);
-	int status = *(int *)data;
+	enum scsi_host_status status = *(enum scsi_host_status *)data;
 
 	scsi_dma_unmap(scmd);
-	scmd->result = status << 16;
+	scmd->result = 0;
+	set_host_byte(scmd, status);
 	scmd->scsi_done(scmd);
 	return true;
 }
···
  * caller to ensure that concurrent I/O submission and/or
  * completion is stopped when calling this function.
  */
-void scsi_host_complete_all_commands(struct Scsi_Host *shost, int status)
+void scsi_host_complete_all_commands(struct Scsi_Host *shost,
+				     enum scsi_host_status status)
 {
 	blk_mq_tagset_busy_iter(&shost->tag_set, complete_all_cmds_iter,
 				&status);

include/scsi/scsi_host.h

···
 extern struct Scsi_Host *scsi_host_lookup(unsigned short);
 extern const char *scsi_host_state_name(enum scsi_host_state);
 extern void scsi_host_complete_all_commands(struct Scsi_Host *shost,
-					    int status);
+					    enum scsi_host_status status);
 
 static inline int __must_check scsi_add_host(struct Scsi_Host *host,
 					     struct device *dev)