[ALSA] pcsp: locking fix

pcsp: locking fix.

Signed-off-by: Stas Sergeev <stsp@aknet.ru>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

2 files changed, 4 insertions, 3 deletions

diff --git a/sound/drivers/pcsp/pcsp.c b/sound/drivers/pcsp/pcsp.c
index 547005cb0942..ac57e87d01bc 100644
--- a/sound/drivers/pcsp/pcsp.c
+++ b/sound/drivers/pcsp/pcsp.c
@@ -191,11 +191,10 @@ static int __devexit pcsp_remove(struct platform_device *dev)
 
 static void pcsp_stop_beep(struct snd_pcsp *chip)
 {
-        unsigned long flags;
-        spin_lock_irqsave(&chip->substream_lock, flags);
+        spin_lock_irq(&chip->substream_lock);
         if (!chip->playback_substream)
                 pcspkr_stop_sound();
-        spin_unlock_irqrestore(&chip->substream_lock, flags);
+        spin_unlock_irq(&chip->substream_lock);
 }
 
 static int pcsp_suspend(struct platform_device *dev, pm_message_t state)
diff --git a/sound/drivers/pcsp/pcsp_lib.c b/sound/drivers/pcsp/pcsp_lib.c
index a302756eac7c..54253e9b4b02 100644
--- a/sound/drivers/pcsp/pcsp_lib.c
+++ b/sound/drivers/pcsp/pcsp_lib.c
@@ -305,7 +305,9 @@ static int snd_pcsp_playback_open(struct snd_pcm_substream *substream)
                 return -EBUSY;
         }
         runtime->hw = snd_pcsp_playback;
+        spin_lock_irq(&chip->substream_lock);
         chip->playback_substream = substream;
+        spin_unlock_irq(&chip->substream_lock);
         return 0;
 }