ALSA: pcm - Reset invalid position even without debug option

Always reset the invalind hw_ptr position returned by the pointer
callback.  The behavior should be consitent independently from the
debug option.

Also, add the printk_ratelimit() check to avoid flooding debug
prints.

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

1 files changed, 7 insertions, 3 deletions

diff --git a/sound/core/pcm_lib.c b/sound/core/pcm_lib.c
index 302654769faf..92ed6d819225 100644
--- a/sound/core/pcm_lib.c
+++ b/sound/core/pcm_lib.c
@@ -159,11 +159,15 @@ snd_pcm_update_hw_ptr_pos(struct snd_pcm_substream *substream,
         pos = substream->ops->pointer(substream);
         if (pos == SNDRV_PCM_POS_XRUN)
                 return pos; /* XRUN */
-#ifdef CONFIG_SND_DEBUG
         if (pos >= runtime->buffer_size) {
-                snd_printk(KERN_ERR  "BUG: stream = %i, pos = 0x%lx, buffer size = 0x%lx, period size = 0x%lx\n", substream->stream, pos, runtime->buffer_size, runtime->period_size);
+                if (printk_ratelimit()) {
+                        snd_printd(KERN_ERR  "BUG: stream = %i, pos = 0x%lx, "
+                                   "buffer size = 0x%lx, period size = 0x%lx\n",
+                                   substream->stream, pos, runtime->buffer_size,
+                                   runtime->period_size);
+                }
+                pos = 0;
         }
-#endif
         pos -= pos % runtime->min_align;
         return pos;
 }