ALSA: sparc/cs4231: Use WARN_ON() instead of BUG_ON()

BUG_ON() is rather useless for debugging as it leads to panic().
Use WARN_ON() and handle the error cases accordingly.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 4 insertions, 2 deletions

diff --git a/sound/sparc/cs4231.c b/sound/sparc/cs4231.c
index 54aaad2a10f5..b47f6fe6277f 100644
--- a/sound/sparc/cs4231.c
+++ b/sound/sparc/cs4231.c
@@ -429,7 +429,8 @@ static void snd_cs4231_advance_dma(struct cs4231_dma_control *dma_cont,
                 unsigned int period_size = snd_pcm_lib_period_bytes(substream);
                 unsigned int offset = period_size * (*periods_sent);
 
-                BUG_ON(period_size >= (1 << 24));
+                if (WARN_ON(period_size >= (1 << 24)))
+                        return;
 
                 if (dma_cont->request(dma_cont,
                                       runtime->dma_addr + offset, period_size))
@@ -912,7 +913,8 @@ static int snd_cs4231_playback_prepare(struct snd_pcm_substream *substream)
         chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_PLAYBACK_ENABLE |
                                             CS4231_PLAYBACK_PIO);
 
-        BUG_ON(runtime->period_size > 0xffff + 1);
+        if (WARN_ON(runtime->period_size > 0xffff + 1))
+                return -EINVAL;
 
         chip->p_periods_sent = 0;
         spin_unlock_irqrestore(&chip->lock, flags);