IEEE1394(r1162): Check return value for errors from hpsb_register_protocol.

drivers/ieee1394/dv1394.c

@@ -2610,24 +2610,32 @@ static void __exit dv1394_exit_module(void)
 
 static int __init dv1394_init_module(void)
 {
+	int ret;
+
 	cdev_init(&dv1394_cdev, &dv1394_fops);
 	dv1394_cdev.owner = THIS_MODULE;
 	kobject_set_name(&dv1394_cdev.kobj, "dv1394");
-	if (cdev_add(&dv1394_cdev, IEEE1394_DV1394_DEV, 16)) {
+	ret = cdev_add(&dv1394_cdev, IEEE1394_DV1394_DEV, 16);
+	if (ret) {
 		printk(KERN_ERR "dv1394: unable to register character device\n");
-		return -EIO;
+		return ret;
 	}
 
 	devfs_mk_dir("ieee1394/dv");
 
 	hpsb_register_highlevel(&dv1394_highlevel);
 
-	hpsb_register_protocol(&dv1394_driver);
+	ret = hpsb_register_protocol(&dv1394_driver);
+	if (ret) {
+		printk(KERN_ERR "dv1394: failed to register protocol\n");
+		hpsb_unregister_highlevel(&dv1394_highlevel);
+		devfs_remove("ieee1394/dv");
+		cdev_del(&dv1394_cdev);
+		return ret;
+	}
 
 #ifdef CONFIG_COMPAT
 	{
-		int ret;
-
 		/* First compatible ones */
 		ret = register_ioctl32_conversion(DV1394_IOC_SHUTDOWN, NULL);
 		ret |= register_ioctl32_conversion(DV1394_IOC_SUBMIT_FRAMES, NULL);

drivers/ieee1394/raw1394.c

@@ -2737,6 +2737,8 @@ static struct file_operations raw1394_fops = {
 
 static int __init init_raw1394(void)
 {
+	int ret;
+
 	hpsb_register_highlevel(&raw1394_highlevel);
 
         devfs_mk_cdev(MKDEV(IEEE1394_MAJOR, IEEE1394_MINOR_BLOCK_RAW1394 * 16),
@@ -2745,16 +2747,24 @@ static int __init init_raw1394(void)
 	cdev_init(&raw1394_cdev, &raw1394_fops);
 	raw1394_cdev.owner = THIS_MODULE;
 	kobject_set_name(&raw1394_cdev.kobj, RAW1394_DEVICE_NAME);
-	if (cdev_add(&raw1394_cdev, IEEE1394_RAW1394_DEV, 1)) {
+	ret = cdev_add(&raw1394_cdev, IEEE1394_RAW1394_DEV, 1);
+	if (ret) {
                 HPSB_ERR("raw1394 failed to register minor device block");
                 devfs_remove(RAW1394_DEVICE_NAME);
                 hpsb_unregister_highlevel(&raw1394_highlevel);
-                return -EBUSY;
+                return ret;
         }
 
-        printk(KERN_INFO "raw1394: /dev/%s device initialized\n", RAW1394_DEVICE_NAME);
+        HPSB_INFO("raw1394: /dev/%s device initialized", RAW1394_DEVICE_NAME);
 
-	hpsb_register_protocol(&raw1394_driver);
+	ret = hpsb_register_protocol(&raw1394_driver);
+	if (ret) {
+		HPSB_ERR("raw1394: failed to register protocol");
+		cdev_del(&raw1394_cdev);
+		devfs_remove(RAW1394_DEVICE_NAME);
+		hpsb_unregister_highlevel(&raw1394_highlevel);
+		return ret;
+	}
 
         return 0;
 }

drivers/ieee1394/sbp2.c

@@ -2801,6 +2801,8 @@ static Scsi_Host_Template scsi_driver_template = {
 
 static int sbp2_module_init(void)
 {
+	int ret;
+
 	SBP2_DEBUG("sbp2_module_init");
 
 	printk(KERN_INFO "sbp2: %s\n", version);
@@ -2819,7 +2821,12 @@ static int sbp2_module_init(void)
 	/* Register our high level driver with 1394 stack */
 	hpsb_register_highlevel(&sbp2_highlevel);
 
-	hpsb_register_protocol(&sbp2_driver);
+	ret = hpsb_register_protocol(&sbp2_driver);
+	if (ret) {
+		SBP2_ERR("Failed to register protocol");
+		hpsb_unregister_highlevel(&sbp2_highlevel);
+		return ret;
+	}
 
 	return 0;
 }

drivers/ieee1394/video1394.c

@@ -1453,24 +1453,32 @@ static void __exit video1394_exit_module (void)
 
 static int __init video1394_init_module (void)
 {
+	int ret;
+
 	cdev_init(&video1394_cdev, &video1394_fops);
 	video1394_cdev.owner = THIS_MODULE;
 	kobject_set_name(&video1394_cdev.kobj, VIDEO1394_DRIVER_NAME);
+	ret = cdev_add(&video1394_cdev, IEEE1394_VIDEO1394_DEV, 16);
 	if (cdev_add(&video1394_cdev, IEEE1394_VIDEO1394_DEV, 16)) {
 		PRINT_G(KERN_ERR, "video1394: unable to get minor device block");
-		return -EIO;
+		return ret;
         }
 
 	devfs_mk_dir(VIDEO1394_DRIVER_NAME);
 
 	hpsb_register_highlevel(&video1394_highlevel);
 
-	hpsb_register_protocol(&video1394_driver);
+	ret = hpsb_register_protocol(&video1394_driver);
+	if (ret) {
+		PRINT_G(KERN_ERR, "video1394: failed to register protocol");
+		hpsb_unregister_highlevel(&video1394_highlevel);
+		devfs_remove(VIDEO1394_DRIVER_NAME);
+		cdev_del(&video1394_cdev);
+		return ret;
+	}
 
 #ifdef CONFIG_COMPAT
 	{
-		int ret;
-
 		/* First the compatible ones */
 		ret = register_ioctl32_conversion(VIDEO1394_IOC_LISTEN_CHANNEL, NULL);
 		ret |= register_ioctl32_conversion(VIDEO1394_IOC_UNLISTEN_CHANNEL, NULL);