ASoC: soc-pcm: add DEFINE_GUARD for snd_soc_card_mutex

Define a guard class wrapping snd_soc_card_mutex_lock() and
snd_soc_card_mutex_unlock() so that scope-based locking can be used
while still picking up the SND_SOC_CARD_CLASS_RUNTIME lockdep subclass.

Signed-off-by: Troy Mitchell <troy.mitchell@linux.spacemit.com>
Link: https://patch.msgid.link/20260522-i2s-same-blk-v4-2-a71a86faaa20@linux.spacemit.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c
index 9b12eedb77c331e2afb2c29db808824d5e16c493..25e494c4ed8129277fe10f5751cb7f1f5270f1ec 100644 (file)
--- a/sound/soc/soc-pcm.c
+++ b/sound/soc/soc-pcm.c
@@ -26,6 +26,9 @@
 #include <sound/soc-link.h>
 #include <sound/initval.h>
 
+
+DEFINE_GUARD(snd_soc_card_mutex, struct snd_soc_card *,
+            snd_soc_card_mutex_lock(_T), snd_soc_card_mutex_unlock(_T))
 #define soc_pcm_ret(rtd, ret) _soc_pcm_ret(rtd, __func__, ret)
 static inline int _soc_pcm_ret(struct snd_soc_pcm_runtime *rtd,
                               const char *func, int ret)