[patch][saa7134] do not change mute state for capturing audio

[Stas Sergeev]

Hi.

When pulseaudio enables the audio capturing, the
driver unmutes the sound. But, if no app have properly
tuned the tuner yet, you get the white noise.
I think the capturing must not touch the mute state,
because, without tuning the tuner first, you can't capture
anything anyway.
Without this patch I am getting the white noise on every
xorg/pulseaudio startup, which made me to always think
that pulseaudio is a joke and will soon be removed. :)

Signed-off-by: Stas Sergeev <s...@list.ru>

diff --git a/drivers/media/video/saa7134/saa7134-alsa.c 
b/drivers/media/video/saa7134/saa7134-alsa.c
index 10460fd..d566468 100644
--- a/drivers/media/video/saa7134/saa7134-alsa.c
+++ b/drivers/media/video/saa7134/saa7134-alsa.c
@@ -77,7 +77,6 @@ typedef struct snd_card_saa7134 {
 
        unsigned long iobase;
        s16 irq;
-       u16 mute_was_on;
 
        spinlock_t lock;
 } snd_card_saa7134_t;
@@ -715,13 +714,6 @@ static int snd_card_saa7134_hw_free(struct 
snd_pcm_substream * substream)
 
 static int snd_card_saa7134_capture_close(struct snd_pcm_substream * substream)
 {
-       snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
-       struct saa7134_dev *dev = saa7134->dev;
-
-       if (saa7134->mute_was_on) {
-               dev->ctl_mute = 1;
-               saa7134_tvaudio_setmute(dev);
-       }
        return 0;
 }
 
@@ -774,12 +766,6 @@ static int snd_card_saa7134_capture_open(struct 
snd_pcm_substream * substream)
        runtime->private_free = snd_card_saa7134_runtime_free;
        runtime->hw = snd_card_saa7134_capture;
 
-       if (dev->ctl_mute != 0) {
-               saa7134->mute_was_on = 1;
-               dev->ctl_mute = 0;
-               saa7134_tvaudio_setmute(dev);
-       }
-
        err = snd_pcm_hw_constraint_integer(runtime,
                                                SNDRV_PCM_HW_PARAM_PERIODS);
        if (err < 0)