[alsa-devel] [PATCH 1/2] sound: Close holes in struct snd_pcm_hw_rule

[Lars-Peter Clausen]

On a 64-bit system there are two 32-bit holes due to the alignment of 64-bit
fields. Reordering things slightly gets rid of those holes, reducing the
size of the struct by 17% percent of its original size.

Signed-off-by: Lars-Peter Clausen <lars at metafoo.de>
---
 include/sound/pcm.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/include/sound/pcm.h b/include/sound/pcm.h
index 0cb7f3f..d632809 100644
--- a/include/sound/pcm.h
+++ b/include/sound/pcm.h
@@ -224,9 +224,10 @@ typedef int (*snd_pcm_hw_rule_func_t)(struct snd_pcm_hw_params *params,
 
 struct snd_pcm_hw_rule {
 	unsigned int cond;
-	snd_pcm_hw_rule_func_t func;
 	int var;
 	int deps[4];
+
+	snd_pcm_hw_rule_func_t func;
 	void *private;
 };
 
-- 
1.8.0