V4L/DVB (4298): Check all __must_check warnings in bttv.

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

1 files changed, 13 insertions, 2 deletions

diff --git a/drivers/media/video/bt8xx/bttv-driver.c b/drivers/media/video/bt8xx/bttv-driver.c
index 5764a89d3562..63e83162286c 100644
--- a/drivers/media/video/bt8xx/bttv-driver.c
+++ b/drivers/media/video/bt8xx/bttv-driver.c
@@ -3909,6 +3909,8 @@ static void bttv_unregister_video(struct bttv *btv)
 /* register video4linux devices */
 static int __devinit bttv_register_video(struct bttv *btv)
 {
+        int ret;
+
         if (no_overlay <= 0) {
                 bttv_video_template.type |= VID_TYPE_OVERLAY;
         } else {
@@ -3923,7 +3925,10 @@ static int __devinit bttv_register_video(struct bttv *btv)
                 goto err;
         printk(KERN_INFO "bttv%d: registered device video%d\n",
                btv->c.nr,btv->video_dev->minor & 0x1f);
-        video_device_create_file(btv->video_dev, &class_device_attr_card);
+        ret = video_device_create_file(btv->video_dev, &class_device_attr_card);
+        if (ret < 0)
+                printk(KERN_WARNING "bttv: video_device_create_file error: "
+                        "%d\n", ret);
 
         /* vbi */
         btv->vbi_dev = vdev_init(btv, &bttv_vbi_template, "vbi");
@@ -4287,6 +4292,8 @@ static struct pci_driver bttv_pci_driver = {
 
 static int bttv_init_module(void)
 {
+        int ret;
+
         bttv_num = 0;
 
         printk(KERN_INFO "bttv: driver version %d.%d.%d loaded\n",
@@ -4308,7 +4315,11 @@ static int bttv_init_module(void)
 
         bttv_check_chipset();
 
-        bus_register(&bttv_sub_bus_type);
+        ret = bus_register(&bttv_sub_bus_type);
+        if (ret < 0) {
+                printk(KERN_WARNING "bttv: bus_register error: %d\n", ret);
+                return ret;
+        }
         return pci_register_driver(&bttv_pci_driver);
 }