---

yaml
---
r: 75879
b: refs/heads/master
c: 9c77010
h: refs/heads/master
i:
  75877: a97e4bf
  75875: eb4767e
  75871: d78c6aa
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 71da890509fec13d54329485bf5e4ac16b992bb6
+refs/heads/master: 9c7701088a61cc0cf8a6e1c68d1e74e3cc2ee0b7

trunk/drivers/scsi/hosts.c

@@ -429,6 +429,15 @@ void scsi_unregister(struct Scsi_Host *shost)
 }
 EXPORT_SYMBOL(scsi_unregister);
 
+static int __scsi_host_match(struct class_device *cdev, void *data)
+{
+	struct Scsi_Host *p;
+	unsigned short *hostnum = (unsigned short *)data;
+
+	p = class_to_shost(cdev);
+	return p->host_no == *hostnum;
+}
+
 /**
  * scsi_host_lookup - get a reference to a Scsi_Host by host no
  *
@@ -439,19 +448,12 @@ EXPORT_SYMBOL(scsi_unregister);
  **/
 struct Scsi_Host *scsi_host_lookup(unsigned short hostnum)
 {
-	struct class *class = &shost_class;
 	struct class_device *cdev;
-	struct Scsi_Host *shost = ERR_PTR(-ENXIO), *p;
+	struct Scsi_Host *shost = ERR_PTR(-ENXIO);
 
-	down(&class->sem);
-	list_for_each_entry(cdev, &class->children, node) {
-		p = class_to_shost(cdev);
-		if (p->host_no == hostnum) {
-			shost = scsi_host_get(p);
-			break;
-		}
-	}
-	up(&class->sem);
+	cdev = class_find_child(&shost_class, &hostnum, __scsi_host_match);
+	if (cdev)
+		shost = scsi_host_get(class_to_shost(cdev));
 
 	return shost;
 }