diff --git a/drivers/scsi/hosts.c b/drivers/scsi/hosts.c
index fed0b02..3fdbb13 100644
--- a/drivers/scsi/hosts.c
+++ b/drivers/scsi/hosts.c
@@ -464,7 +464,7 @@
 struct Scsi_Host *scsi_host_lookup(unsigned short hostnum)
 {
 	struct device *cdev;
-	struct Scsi_Host *shost = ERR_PTR(-ENXIO);
+	struct Scsi_Host *shost = NULL;
 
 	cdev = class_find_device(&shost_class, NULL, &hostnum,
 				 __scsi_host_match);
diff --git a/drivers/scsi/scsi_proc.c b/drivers/scsi/scsi_proc.c
index c6a904a..82f7b2d 100644
--- a/drivers/scsi/scsi_proc.c
+++ b/drivers/scsi/scsi_proc.c
@@ -259,8 +259,8 @@
 	int error = -ENXIO;
 
 	shost = scsi_host_lookup(host);
-	if (IS_ERR(shost))
-		return PTR_ERR(shost);
+	if (!shost)
+		return error;
 
 	if (shost->transportt->user_scan)
 		error = shost->transportt->user_scan(shost, channel, id, lun);
@@ -287,8 +287,8 @@
 	int error = -ENXIO;
 
 	shost = scsi_host_lookup(host);
-	if (IS_ERR(shost))
-		return PTR_ERR(shost);
+	if (!shost)
+		return error;
 	sdev = scsi_device_lookup(shost, channel, id, lun);
 	if (sdev) {
 		scsi_remove_device(sdev);
diff --git a/drivers/scsi/scsi_tgt_lib.c b/drivers/scsi/scsi_tgt_lib.c
index 257e097..f26299d 100644
--- a/drivers/scsi/scsi_tgt_lib.c
+++ b/drivers/scsi/scsi_tgt_lib.c
@@ -460,7 +460,7 @@
 
 	/* TODO: replace with a O(1) alg */
 	shost = scsi_host_lookup(host_no);
-	if (IS_ERR(shost)) {
+	if (!shost) {
 		printk(KERN_ERR "Could not find host no %d\n", host_no);
 		return -EINVAL;
 	}
@@ -550,7 +550,7 @@
 	dprintk("%d %d %llx\n", host_no, result, (unsigned long long) mid);
 
 	shost = scsi_host_lookup(host_no);
-	if (IS_ERR(shost)) {
+	if (!shost) {
 		printk(KERN_ERR "Could not find host no %d\n", host_no);
 		return err;
 	}
@@ -603,7 +603,7 @@
 	dprintk("%d %d%llx\n", host_no, result, (unsigned long long)itn_id);
 
 	shost = scsi_host_lookup(host_no);
-	if (IS_ERR(shost)) {
+	if (!shost) {
 		printk(KERN_ERR "Could not find host no %d\n", host_no);
 		return err;
 	}
diff --git a/drivers/scsi/scsi_transport_iscsi.c b/drivers/scsi/scsi_transport_iscsi.c
index 043c392..0ce5f7c 100644
--- a/drivers/scsi/scsi_transport_iscsi.c
+++ b/drivers/scsi/scsi_transport_iscsi.c
@@ -1361,7 +1361,7 @@
 		return -EINVAL;
 
 	shost = scsi_host_lookup(ev->u.tgt_dscvr.host_no);
-	if (IS_ERR(shost)) {
+	if (!shost) {
 		printk(KERN_ERR "target discovery could not find host no %u\n",
 		       ev->u.tgt_dscvr.host_no);
 		return -ENODEV;
@@ -1387,7 +1387,7 @@
 		return -ENOSYS;
 
 	shost = scsi_host_lookup(ev->u.set_host_param.host_no);
-	if (IS_ERR(shost)) {
+	if (!shost) {
 		printk(KERN_ERR "set_host_param could not find host no %u\n",
 		       ev->u.set_host_param.host_no);
 		return -ENODEV;