From: Troy Mitchell <troy.mitchell@linux.spacemit.com>
To: Liam Girdwood <lgirdwood@gmail.com>,
Mark Brown <broonie@kernel.org>,
Jaroslav Kysela <perex@perex.cz>, Takashi Iwai <tiwai@suse.com>,
Yixun Lan <dlan@kernel.org>
Cc: linux-sound@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-riscv@lists.infradead.org, spacemit@lists.linux.dev,
jinmei.wei@spacemit.com,
Troy Mitchell <troy.mitchell@linux.spacemit.com>
Subject: [PATCH v4 2/3] ASoC: soc-pcm: add DEFINE_GUARD for snd_soc_card_mutex
Date: Fri, 22 May 2026 21:33:58 +0800 [thread overview]
Message-ID: <20260522-i2s-same-blk-v4-2-a71a86faaa20@linux.spacemit.com> (raw)
In-Reply-To: <20260522-i2s-same-blk-v4-0-a71a86faaa20@linux.spacemit.com>
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>
---
sound/soc/soc-pcm.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c
index 9b12eedb77c3..25e494c4ed81 100644
--- 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)
--
2.54.0
next prev parent reply other threads:[~2026-05-22 13:35 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-22 13:33 [PATCH v4 0/3] ASoC: add shared BCLK rate constraint for cross-DAI coordination Troy Mitchell
2026-05-22 13:33 ` [PATCH v4 1/3] ASoC: soc-dai: add shared BCLK clock for cross-DAI rate constraints Troy Mitchell
2026-05-22 13:33 ` Troy Mitchell [this message]
2026-05-22 13:33 ` [PATCH v4 3/3] ASoC: soc-pcm: constrain hw_params when DAIs share the same BCLK Troy Mitchell
2026-05-25 10:42 ` [PATCH v4 0/3] ASoC: add shared BCLK rate constraint for cross-DAI coordination Mark Brown
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