diff options
Diffstat (limited to 'recipes/linux/linux-kexecboot-2.6.24/tosa/0037-Don-t-lock-the-codec-list-in-snd_soc_dapm_new_widget.patch')
| -rw-r--r-- | recipes/linux/linux-kexecboot-2.6.24/tosa/0037-Don-t-lock-the-codec-list-in-snd_soc_dapm_new_widget.patch | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/recipes/linux/linux-kexecboot-2.6.24/tosa/0037-Don-t-lock-the-codec-list-in-snd_soc_dapm_new_widget.patch b/recipes/linux/linux-kexecboot-2.6.24/tosa/0037-Don-t-lock-the-codec-list-in-snd_soc_dapm_new_widget.patch new file mode 100644 index 0000000000..010194dd96 --- /dev/null +++ b/recipes/linux/linux-kexecboot-2.6.24/tosa/0037-Don-t-lock-the-codec-list-in-snd_soc_dapm_new_widget.patch @@ -0,0 +1,41 @@ +From d2888c7643b07687b14a839239cbe7fc5bf565e6 Mon Sep 17 00:00:00 2001 +From: Mark Brown <broonie@opensource.wolfsonmicro.com> +Date: Mon, 14 Jan 2008 23:24:26 +0300 +Subject: [PATCH 37/64] Don't lock the codec list in snd_soc_dapm_new_widgets() + +snd_soc_dapm_new_widgets() takes the codec lock when adding new widgets, +causing lockdep warnings when applications later call down through ALSA +to adjust controls. Since widgets are only added during probe this lock +should be unneeded so don't take it. + +Thanks to Dmitry Baryshkov <dbaryshkov@gmail.com> for reporting this issue. + +Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> +Cc: Dmitry Baryshkov <dbaryshkov@gmail.com> +--- + sound/soc/soc-dapm.c | 2 -- + 1 files changed, 0 insertions(+), 2 deletions(-) + +diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c +index 29a546f..e46cdc5 100644 +--- a/sound/soc/soc-dapm.c ++++ b/sound/soc/soc-dapm.c +@@ -963,7 +963,6 @@ int snd_soc_dapm_new_widgets(struct snd_soc_codec *codec) + { + struct snd_soc_dapm_widget *w; + +- mutex_lock(&codec->mutex); + list_for_each_entry(w, &codec->dapm_widgets, list) + { + if (w->new) +@@ -998,7 +997,6 @@ int snd_soc_dapm_new_widgets(struct snd_soc_codec *codec) + } + + dapm_power_widgets(codec, SND_SOC_DAPM_STREAM_NOP); +- mutex_unlock(&codec->mutex); + return 0; + } + EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets); +-- +1.5.3.8 + |