ALSA: pcm: constify attribute_group structures.
authorArvind Yadav <arvind.yadav.cs@gmail.com>
Thu, 29 Jun 2017 10:32:56 +0000 (16:02 +0530)
committerTakashi Iwai <tiwai@suse.de>
Thu, 29 Jun 2017 16:20:15 +0000 (18:20 +0200)
attribute_groups are not supposed to change at runtime. All functions
working with attribute_groups provided by <linux/device.h> work with const
attribute_group. So mark the non-const structs as const.

File size before:
   text    data     bss     dec     hex filename
   9781     240       8   10029    272d sound/core/pcm.o

File size After adding 'const':
   text    data     bss     dec     hex filename
   9813     176       8    9997    270d sound/core/pcm.o

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
sound/core/pcm.c

index 4b329044739836b333a04b9f7a2f29efc7acf566..89c7485519cbf2478d183428215618fb6f47d2ab 100644 (file)
@@ -1067,7 +1067,7 @@ static struct attribute *pcm_dev_attrs[] = {
        NULL
 };
 
-static struct attribute_group pcm_dev_attr_group = {
+static const struct attribute_group pcm_dev_attr_group = {
        .attrs  = pcm_dev_attrs,
 };