ALSA: sound/ppc/powermac: remove undefined operations

Modifying an object twice without an intervening sequence point is
undefined.

Signed-off-by: Andreas Schwab <schwab@linux-m68k.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 1 insertions, 1 deletions

diff --git a/sound/ppc/tumbler.c b/sound/ppc/tumbler.c
index 20afdf9772ee..961d98297695 100644
--- a/sound/ppc/tumbler.c
+++ b/sound/ppc/tumbler.c
@@ -785,7 +785,7 @@ static int snapper_set_capture_source(struct pmac_tumbler *mix)
         if (! mix->i2c.client)
                 return -ENODEV;
         if (mix->capture_source)
-                mix->acs = mix->acs |= 2;
+                mix->acs |= 2;
         else
                 mix->acs &= ~2;
         return i2c_smbus_write_byte_data(mix->i2c.client, TAS_REG_ACS, mix->acs);