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authorLars-Peter Clausen <lars@metafoo.de>2013-05-24 15:18:10 +0200
committerTakashi Iwai <tiwai@suse.de>2013-05-24 15:41:44 +0200
commite6c2e7eb27fc512af6875d7f2cf313e29c61be0b (patch)
tree6e254e4b5b673569b2910fb2a6d7a16c86298308 /include/sound/pcm.h
parent3cf981484a002fd02c410741d30b234227f89568 (diff)
ALSA: Constify the snd_pcm_substream struct ops field
The ops field of the snd_pcm_substream struct is never modified inside the ALSA core. Making it const allows drivers to declare their snd_pcm_ops struct as const. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'include/sound/pcm.h')
-rw-r--r--include/sound/pcm.h5
1 files changed, 3 insertions, 2 deletions
diff --git a/include/sound/pcm.h b/include/sound/pcm.h
index b48792fe386b..84b10f9a2832 100644
--- a/include/sound/pcm.h
+++ b/include/sound/pcm.h
@@ -384,7 +384,7 @@ struct snd_pcm_substream {
unsigned int dma_buf_id;
size_t dma_max;
/* -- hardware operations -- */
- struct snd_pcm_ops *ops;
+ const struct snd_pcm_ops *ops;
/* -- runtime information -- */
struct snd_pcm_runtime *runtime;
/* -- timer section -- */
@@ -871,7 +871,8 @@ const unsigned char *snd_pcm_format_silence_64(snd_pcm_format_t format);
int snd_pcm_format_set_silence(snd_pcm_format_t format, void *buf, unsigned int frames);
snd_pcm_format_t snd_pcm_build_linear_format(int width, int unsigned, int big_endian);
-void snd_pcm_set_ops(struct snd_pcm * pcm, int direction, struct snd_pcm_ops *ops);
+void snd_pcm_set_ops(struct snd_pcm * pcm, int direction,
+ const struct snd_pcm_ops *ops);
void snd_pcm_set_sync(struct snd_pcm_substream *substream);
int snd_pcm_lib_interleave_len(struct snd_pcm_substream *substream);
int snd_pcm_lib_ioctl(struct snd_pcm_substream *substream,