V4L/DVB (9622): tvaudio: Improve comments and remove a unneeded prototype

Some comments are not clear enough. Improve it to allow a better
understanding of the driver behavior.

While there, remove an unneeded struct prototype.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 7 insertions, 12 deletions

diff --git a/drivers/media/video/tvaudio.c b/drivers/media/video/tvaudio.c
index 55b39b9a33d9..779ce7f865c3 100644
--- a/drivers/media/video/tvaudio.c
+++ b/drivers/media/video/tvaudio.c
@@ -106,7 +106,6 @@ struct CHIPDESC {
         int  inputmute;
         int  inputmask;
 };
-static struct CHIPDESC chiplist[];
 
 /* current state of the chip */
 struct CHIPSTATE {
@@ -1856,11 +1855,13 @@ static int chip_command(struct i2c_client *client,
         case VIDIOC_S_FREQUENCY:
                 chip->mode = 0; /* automatic */
 
-                /* For chips that provide getmode, setmode and checkmode,
-                   a kthread is created to automatically to set the audio
-                   standard. In this case, start with MONO and wait 2 seconds
-                   for the decoding to stablize. Then, run kthread to change
-                   to stereo, if carrier detected.
+                /* For chips that provide getmode and setmode, and doesn't
+                   automatically follows the stereo carrier, a kthread is
+                   created to set the audio standard. In this case, when then
+                   the video channel is changed, tvaudio starts on MONO mode.
+                   After waiting for 2 seconds, the kernel thread is called,
+                   to follow whatever audio standard is pointed by the
+                   audio carrier.
                  */
                 if (chip->thread) {
                         desc->setmode(chip,V4L2_TUNER_MODE_MONO);
@@ -1905,9 +1906,3 @@ static struct v4l2_i2c_driver_data v4l2_i2c_data = {
         .legacy_probe = chip_legacy_probe,
         .id_table = chip_id,
 };
-
-/*
- * Local variables:
- * c-basic-offset: 8
- * End:
- */