Commit 9aee03f3 authored by Arnd Bergmann's avatar Arnd Bergmann Committed by Takashi Iwai

ALSA: pcm: use "do {} while (0)" for empty macro

Recent compilers produce a harmless warning for the new pcm_call_notify()
macro when CONFIG_SND_PCM_OSS is disabled:

sound/core/pcm.c: In function 'snd_pcm_free':
sound/core/pcm.c:905:37: error: suggest braces around empty body in an 'if' statement [-Werror=empty-body]

This turns the empty macro into a 'do {} while (0)' statement to avoid
the warning.

Fixes: 58f30d65 ("ALSA: pcm: Build pcm notifier code conditionally")
Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent b46fe5d9
...@@ -894,7 +894,7 @@ static void snd_pcm_free_stream(struct snd_pcm_str * pstr) ...@@ -894,7 +894,7 @@ static void snd_pcm_free_stream(struct snd_pcm_str * pstr)
_notify->call(pcm); \ _notify->call(pcm); \
} while (0) } while (0)
#else #else
#define pcm_call_notify(pcm, call) /* NOP */ #define pcm_call_notify(pcm, call) do {} while (0)
#endif #endif
static int snd_pcm_free(struct snd_pcm *pcm) static int snd_pcm_free(struct snd_pcm *pcm)
......
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