[alsa-devel] [PATCH] ASoC: rt1308: make array pd static const, makes object smaller

[Colin King]

From: Colin Ian King <colin.king at canonical.com>

Don't populate the array pd on the stack but instead make it
static const. Makes the object code smaller by 82 bytes.

Before:
   text	   data	    bss	    dec	    hex	filename
  26548	   7288	     64	  33900	   846c	sound/soc/codecs/rt1308.o

After:
   text	   data	    bss	    dec	    hex	filename
  26370	   7384	     64	  33818	   841a	sound/soc/codecs/rt1308.o

(gcc version 9.2.1, amd64)

Signed-off-by: Colin Ian King <colin.king at canonical.com>
---
 sound/soc/codecs/rt1308.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/sound/soc/codecs/rt1308.c b/sound/soc/codecs/rt1308.c
index 6f2ee6809dbb..b75931a69a1c 100644
--- a/sound/soc/codecs/rt1308.c
+++ b/sound/soc/codecs/rt1308.c
@@ -436,7 +436,8 @@ static const struct snd_soc_dapm_route rt1308_dapm_routes[] = {
 
 static int rt1308_get_clk_info(int sclk, int rate)
 {
-	int i, pd[] = {1, 2, 3, 4, 6, 8, 12, 16};
+	int i;
+	static const int pd[] = {1, 2, 3, 4, 6, 8, 12, 16};
 
 	if (sclk <= 0 || rate <= 0)
 		return -EINVAL;
-- 
2.20.1