media: em28xx: annotate unchecked call to media_device_register()

Static analyzers generate alerts for an unchecked call to
`media_device_register()`. However, in this case, the device will work
reliably without the media controller API.

Add a comment above the call to prevent future unnecessary changes.

Suggested-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Fixes: 37ecc7b1278f ("[media] em28xx: add media controller support")
Signed-off-by: Nikita Zhandarovich <n.zhandarovich@fintech.ru>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>

diff --git a/drivers/media/usb/em28xx/em28xx-cards.c b/drivers/media/usb/em28xx/em28xx-cards.c
index 4d037c92af7c58a29fc39b3ab7d2ce593f1503cd..bae76023cf71d33cc7a85cdc4402c6d3a26f0d4b 100644 (file)
--- a/drivers/media/usb/em28xx/em28xx-cards.c
+++ b/drivers/media/usb/em28xx/em28xx-cards.c
@@ -4094,6 +4094,10 @@ static int em28xx_usb_probe(struct usb_interface *intf,
         * topology will likely change after the load of the em28xx subdrivers.
         */
 #ifdef CONFIG_MEDIA_CONTROLLER
+       /*
+        * No need to check the return value, the device will still be
+        * usable without media controller API.
+        */
        retval = media_device_register(dev->media_dev);
 #endif