ALSA: pcm_lib - fix xrun functionality

The commit 4d96eb255c53ab5e39b37fd4d484ea3dc39ab456 broke the interrupt
time xrun functionality (stream stop etc.) if the CONFIG_SND_PCM_XRUN_DEBUG
is not set. This is because the xrun() is null defined without it.

Fix this by letting the function xrun() to be always defined as it was
before.

Signed-off-by: Jarkko Nikula <jhnikula@gmail.com>
Cc: Jaroslav Kysela <perex@perex.cz>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/core/pcm_lib.c b/sound/core/pcm_lib.c
index b546ac2..a2ff861 100644 (file)
--- a/sound/core/pcm_lib.c
+++ b/sound/core/pcm_lib.c
@@ -148,6 +148,9 @@ static void pcm_debug_name(struct snd_pcm_substream *substream,
 
 #define xrun_debug(substream, mask) \
                        ((substream)->pstr->xrun_debug & (mask))
+#else
+#define xrun_debug(substream, mask)    0
+#endif
 
 #define dump_stack_on_xrun(substream) do {                     \
                if (xrun_debug(substream, XRUN_DEBUG_STACK))    \
@@ -169,6 +172,7 @@ static void xrun(struct snd_pcm_substream *substream)
        }
 }
 
+#ifdef CONFIG_SND_PCM_XRUN_DEBUG
 #define hw_ptr_error(substream, fmt, args...)                          \
        do {                                                            \
                if (xrun_debug(substream, XRUN_DEBUG_BASIC)) {          \
@@ -255,8 +259,6 @@ static void xrun_log_show(struct snd_pcm_substream *substream)
 
 #else /* ! CONFIG_SND_PCM_XRUN_DEBUG */
 
-#define xrun_debug(substream, mask)    0
-#define xrun(substream)                        do { } while (0)
 #define hw_ptr_error(substream, fmt, args...) do { } while (0)
 #define xrun_log(substream, pos)       do { } while (0)
 #define xrun_log_show(substream)       do { } while (0)