ALSA: cs5535audio: ensure MIC Bias/Analog Input bail if not on an OLPC machine

Signed-off-by: Andres Salomon <dilinger@debian.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 6 insertions, 0 deletions

diff --git a/sound/pci/cs5535audio/cs5535audio_olpc.c b/sound/pci/cs5535audio/cs5535audio_olpc.c
index 164f6bdab991..5c6814335cd7 100644
--- a/sound/pci/cs5535audio/cs5535audio_olpc.c
+++ b/sound/pci/cs5535audio/cs5535audio_olpc.c
@@ -26,6 +26,9 @@ void olpc_analog_input(struct snd_ac97 *ac97, int on)
 {
         int err;
 
+        if (!machine_is_olpc())
+                return;
+
         /* update the High Pass Filter (via AC97_AD_TEST2) */
         err = snd_ac97_update_bits(ac97, AC97_AD_TEST2,
                         1 << AC97_AD_HPFD_SHIFT, on << AC97_AD_HPFD_SHIFT);
@@ -48,6 +51,9 @@ void olpc_mic_bias(struct snd_ac97 *ac97, int on)
 {
         int err;
 
+        if (!machine_is_olpc())
+                return;
+
         on = on ? 0 : 1;
         err = snd_ac97_update_bits(ac97, AC97_AD_MISC,
                         1 << AC97_AD_VREFD_SHIFT, on << AC97_AD_VREFD_SHIFT);