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-rw-r--r--sound/pci/hda/hda_intel.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
index 9a20fb1bef4..557f269f83a 100644
--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -536,8 +536,9 @@ static void azx_update_rirb(struct azx *chip)
if (res_ex & ICH6_RIRB_EX_UNSOL_EV)
snd_hda_queue_unsol_event(chip->bus, res, res_ex);
else if (chip->rirb.cmds) {
- chip->rirb.cmds--;
chip->rirb.res = res;
+ smp_wmb();
+ chip->rirb.cmds--;
}
}
}
@@ -556,8 +557,10 @@ static unsigned int azx_rirb_get_response(struct hda_codec *codec)
azx_update_rirb(chip);
spin_unlock_irq(&chip->reg_lock);
}
- if (!chip->rirb.cmds)
+ if (!chip->rirb.cmds) {
+ smp_rmb();
return chip->rirb.res; /* the last value */
+ }
if (time_after(jiffies, timeout))
break;
if (codec->bus->needs_damn_long_delay)