diff --git a/drivers/scsi/hosts.c b/drivers/scsi/hosts.c
index f0bc8bbb3938..13ee3453e56a 100644
--- a/drivers/scsi/hosts.c
+++ b/drivers/scsi/hosts.c
@@ -536,7 +536,7 @@ EXPORT_SYMBOL(scsi_host_alloc);
 static int __scsi_host_match(struct device *dev, const void *data)
 {
 	struct Scsi_Host *p;
-	const unsigned short *hostnum = data;
+	const unsigned int *hostnum = data;
 
 	p = class_to_shost(dev);
 	return p->host_no == *hostnum;
@@ -553,7 +553,7 @@ static int __scsi_host_match(struct device *dev, const void *data)
  *	that scsi_host_get() took. The put_device() below dropped
  *	the reference from class_find_device().
  **/
-struct Scsi_Host *scsi_host_lookup(unsigned short hostnum)
+struct Scsi_Host *scsi_host_lookup(unsigned int hostnum)
 {
 	struct device *cdev;
 	struct Scsi_Host *shost = NULL;
diff --git a/include/scsi/scsi_host.h b/include/scsi/scsi_host.h
index 0f29799efa02..6b90b476a03c 100644
--- a/include/scsi/scsi_host.h
+++ b/include/scsi/scsi_host.h
@@ -763,7 +763,7 @@ extern void scsi_remove_host(struct Scsi_Host *);
 extern struct Scsi_Host *scsi_host_get(struct Scsi_Host *);
 extern int scsi_host_busy(struct Scsi_Host *shost);
 extern void scsi_host_put(struct Scsi_Host *t);
-extern struct Scsi_Host *scsi_host_lookup(unsigned short);
+extern struct Scsi_Host *scsi_host_lookup(unsigned int hostnum);
 extern const char *scsi_host_state_name(enum scsi_host_state);
 extern void scsi_host_complete_all_commands(struct Scsi_Host *shost,
 					    enum scsi_host_status status);