1 files changed, 2 insertions, 2 deletions

diff --git a/sound/pci/ac97/ac97_codec.c b/sound/pci/ac97/ac97_codec.c
index 7abcb10b2754..91d8ceb4e9c2 100644
--- a/sound/pci/ac97/ac97_codec.c
+++ b/sound/pci/ac97/ac97_codec.c
@@ -382,7 +382,7 @@ int snd_ac97_update_bits_nolock(struct snd_ac97 *ac97, unsigned short reg,
         unsigned short old, new;
 
         old = snd_ac97_read_cache(ac97, reg);
-        new = (old & ~mask) | value;
+        new = (old & ~mask) | (value & mask);
         change = old != new;
         if (change) {
                 ac97->regs[reg] = new;
@@ -399,7 +399,7 @@ static int snd_ac97_ad18xx_update_pcm_bits(struct snd_ac97 *ac97, int codec, uns
 
         mutex_lock(&ac97->page_mutex);
         old = ac97->spec.ad18xx.pcmreg[codec];
-        new = (old & ~mask) | value;
+        new = (old & ~mask) | (value & mask);
         change = old != new;
         if (change) {
                 mutex_lock(&ac97->reg_mutex);