[media] em28xx: improve extension information messages

Add a message with consistent prints before and after each
extension initialization, and provide a better text for module
load.

While here, add a missing sanity check for extension finish
code at em28xx-v4l extension.

Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/media/usb/em28xx/em28xx-input.c b/drivers/media/usb/em28xx/em28xx-input.c
index 93a7d02b9cb4..eed7dd79f734 100644
--- a/drivers/media/usb/em28xx/em28xx-input.c
+++ b/drivers/media/usb/em28xx/em28xx-input.c
@@ -692,6 +692,8 @@ static int em28xx_ir_init(struct em28xx *dev)
                 return 0;
         }
 
+        em28xx_info("Registering input extension\n");
+
         ir = kzalloc(sizeof(*ir), GFP_KERNEL);
         rc = rc_allocate_device();
         if (!ir || !rc)
@@ -785,6 +787,8 @@ static int em28xx_ir_init(struct em28xx *dev)
         if (err)
                 goto error;
 
+        em28xx_info("Input extension successfully initalized\n");
+
         return 0;
 
 error: