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ASoC: Make return type of dpcm_state_string() const char *

Message ID 1479810554-24289-1-git-send-email-lars@metafoo.de (mailing list archive)
State Accepted
Commit 852801417a89375c0df4285e60d90c7821a1d730
Headers show

Commit Message

Lars-Peter Clausen Nov. 22, 2016, 10:29 a.m. UTC
dpcm_state_string() returns a pointer to a string literal. Modifying a
string literal causes undefined behaviour. So make the return type of the
function const char * to make it explicit that the returned value should
not be modified.

This patch is purely cosmetic, none of the users of dpcm_state_string()
attempt to modify the returned content.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
---
 sound/soc/soc-pcm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c
index d56a16a..e7a1eaa 100644
--- a/sound/soc/soc-pcm.c
+++ b/sound/soc/soc-pcm.c
@@ -2882,7 +2882,7 @@  int snd_soc_platform_trigger(struct snd_pcm_substream *substream,
 EXPORT_SYMBOL_GPL(snd_soc_platform_trigger);
 
 #ifdef CONFIG_DEBUG_FS
-static char *dpcm_state_string(enum snd_soc_dpcm_state state)
+static const char *dpcm_state_string(enum snd_soc_dpcm_state state)
 {
 	switch (state) {
 	case SND_SOC_DPCM_STATE_NEW: