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| author |   Arnd Bergmann <arnd@arndb.de> | 2017-05-18 15:35:54 +0200 |
|---|---|---|
| committer |   Takashi Iwai <tiwai@suse.de> | 2017-05-18 16:38:49 +0200 |
| commit | 9aee03f39c13fc674f5973baa69d13e32b45b535 (patch) | |
| tree | 521677455f73b0996ce8c4890f00d1afe7a0c241 /sound/core/pcm.c | |
| parent | ALSA: pcm: constify function local and read-only table (diff) | |
| download | linux-dev-9aee03f39c13fc674f5973baa69d13e32b45b535.tar.xz linux-dev-9aee03f39c13fc674f5973baa69d13e32b45b535.zip | |
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: 58f30d650c7f ("ALSA: pcm: Build pcm notifier code conditionally")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/core/pcm.c')
| -rw-r--r-- | sound/core/pcm.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/sound/core/pcm.c b/sound/core/pcm.c index 24acbfb5c531..d30dba0ee688 100644 --- a/sound/core/pcm.c +++ b/sound/core/pcm.c @@ -894,7 +894,7 @@ static void snd_pcm_free_stream(struct snd_pcm_str * pstr) _notify->call(pcm); \ } while (0) #else -#define pcm_call_notify(pcm, call) /* NOP */ +#define pcm_call_notify(pcm, call) do {} while (0) #endif static int snd_pcm_free(struct snd_pcm *pcm) |