snd_ac97_swap_ctl
if (snd_ac97_swap_ctl(ac97, "Master Playback", "Surround Playback", "Switch") ||
snd_ac97_swap_ctl(ac97, "Master Playback", "Surround Playback", "Volume"))
static int snd_ac97_swap_ctl(struct snd_ac97 *ac97, const char *s1,