From mboxrd@z Thu Jan 1 00:00:00 1970 From: Charles Keepax Subject: [PATCH 09/17 v2] ASoC: wm8996: Update locking around use of DAPM pin API Date: Tue, 18 Feb 2014 15:22:20 +0000 Message-ID: <1392736948-26623-10-git-send-email-ckeepax@opensource.wolfsonmicro.com> References: <1392736948-26623-1-git-send-email-ckeepax@opensource.wolfsonmicro.com> Return-path: In-Reply-To: <1392736948-26623-1-git-send-email-ckeepax@opensource.wolfsonmicro.com> Sender: linux-kernel-owner@vger.kernel.org To: broonie@kernel.org Cc: myungjoo.ham@samsung.com, cw00.choi@samsung.com, dmitry.torokhov@gmail.com, lgirdwood@gmail.com, lars@metafoo.de, peter.ujfalusi@ti.com, jarkko.nikula@bitmer.com, eric.y.miao@gmail.com, haojian.zhuang@gmail.com, linux-kernel@vger.kernel.org, patches@opensource.wolfsonmicro.com, alsa-devel@alsa-project.org, linux@arm.linux.org.uk List-Id: alsa-devel@alsa-project.org The pin updates in this driver look like they are intended to be done atomically, update to do so. Signed-off-by: Charles Keepax --- sound/soc/codecs/wm8996.c | 9 +++++++-- 1 files changed, 7 insertions(+), 2 deletions(-) diff --git a/sound/soc/codecs/wm8996.c b/sound/soc/codecs/wm8996.c index 1a7655b..d565d0a 100644 --- a/sound/soc/codecs/wm8996.c +++ b/sound/soc/codecs/wm8996.c @@ -2251,6 +2251,7 @@ int wm8996_detect(struct snd_soc_codec *codec, struct snd_soc_jack *jack, wm8996_polarity_fn polarity_cb) { struct wm8996_priv *wm8996 = snd_soc_codec_get_drvdata(codec); + struct snd_soc_dapm_context *dapm = &codec->dapm; wm8996->jack = jack; wm8996->detecting = true; @@ -2267,8 +2268,12 @@ int wm8996_detect(struct snd_soc_codec *codec, struct snd_soc_jack *jack, WM8996_MICB2_DISCH, 0); /* LDO2 powers the microphones, SYSCLK clocks detection */ - snd_soc_dapm_force_enable_pin(&codec->dapm, "LDO2"); - snd_soc_dapm_force_enable_pin(&codec->dapm, "SYSCLK"); + snd_soc_dapm_mutex_lock(dapm); + + snd_soc_dapm_force_enable_pin_unlocked(dapm, "LDO2"); + snd_soc_dapm_force_enable_pin_unlocked(dapm, "SYSCLK"); + + snd_soc_dapm_mutex_unlock(dapm); /* We start off just enabling microphone detection - even a * plain headphone will trigger detection. -- 1.7.2.5