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Subject[PATCH] ALSA: core: avoid -Wempty-body warnings
Date
From: Arnd Bergmann <arnd@arndb.de>

Building with 'make W=1' shows some warnings about empty function-style
macros:

sound/core/pcm_memory.c: In function 'preallocate_pages':
sound/core/pcm_memory.c:236:49: error: suggest braces around empty body in an 'if' statement [-Werror=empty-body]
236 | preallocate_info_init(substream);

sound/core/seq_device.c: In function 'snd_seq_device_dev_register':
sound/core/seq_device.c:163:41: error: suggest braces around empty body in an 'if' statement [-Werror=empty-body]
163 | queue_autoload_drivers();

Change them to empty inline functions, which are more robust here.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
sound/core/oss/pcm_oss.c | 8 ++++++--
sound/core/pcm_memory.c | 4 +++-
sound/core/seq_device.c | 15 ++++++++++++---
3 files changed, 21 insertions(+), 6 deletions(-)

diff --git a/sound/core/oss/pcm_oss.c b/sound/core/oss/pcm_oss.c
index 142fc751a847..86c39ee01aaa 100644
--- a/sound/core/oss/pcm_oss.c
+++ b/sound/core/oss/pcm_oss.c
@@ -3069,8 +3069,12 @@ static void snd_pcm_oss_proc_done(struct snd_pcm *pcm)
}
}
#else /* !CONFIG_SND_VERBOSE_PROCFS */
-#define snd_pcm_oss_proc_init(pcm)
-#define snd_pcm_oss_proc_done(pcm)
+static inline void snd_pcm_oss_proc_init(struct snd_pcm *pcm)
+{
+}
+static inline void snd_pcm_oss_proc_done(struct snd_pcm *pcm)
+{
+}
#endif /* CONFIG_SND_VERBOSE_PROCFS */

/*
diff --git a/sound/core/pcm_memory.c b/sound/core/pcm_memory.c
index 289dd1fd8fe7..c440f67b34a3 100644
--- a/sound/core/pcm_memory.c
+++ b/sound/core/pcm_memory.c
@@ -210,7 +210,9 @@ static inline void preallocate_info_init(struct snd_pcm_substream *substream)
}

#else /* !CONFIG_SND_VERBOSE_PROCFS */
-#define preallocate_info_init(s)
+static inline void preallocate_info_init(struct snd_pcm_substream *substream)
+{
+}
#endif /* CONFIG_SND_VERBOSE_PROCFS */

/*
diff --git a/sound/core/seq_device.c b/sound/core/seq_device.c
index 7ed13cb32ef8..382275c5b193 100644
--- a/sound/core/seq_device.c
+++ b/sound/core/seq_device.c
@@ -133,10 +133,19 @@ void snd_seq_device_load_drivers(void)
flush_work(&autoload_work);
}
EXPORT_SYMBOL(snd_seq_device_load_drivers);
-#define cancel_autoload_drivers() cancel_work_sync(&autoload_work)
+
+static inline void cancel_autoload_drivers(void)
+{
+ cancel_work_sync(&autoload_work);
+}
#else
-#define queue_autoload_drivers() /* NOP */
-#define cancel_autoload_drivers() /* NOP */
+static inline void queue_autoload_drivers(void)
+{
+}
+
+static inline void cancel_autoload_drivers(void)
+{
+}
#endif

/*
--
2.29.2
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