diff options
author | Álvaro Fernández Rojas <noltari@gmail.com> | 2019-09-04 19:01:23 +0200 |
---|---|---|
committer | Álvaro Fernández Rojas <noltari@gmail.com> | 2019-09-04 19:02:48 +0200 |
commit | 662394fb30fdbcc89ec387918714aebee6868a9f (patch) | |
tree | c308c5f1a650abf9d9ccbb2a1747469a0d8570c0 /target/linux/brcm2708/patches-4.19/950-0449-staging-bcm2835-audio-Drop-superfluous-mutex-lock-du.patch | |
parent | 99a5e285887c4a10aaf06d8e01fae0707995da00 (diff) | |
download | upstream-662394fb30fdbcc89ec387918714aebee6868a9f.tar.gz upstream-662394fb30fdbcc89ec387918714aebee6868a9f.tar.bz2 upstream-662394fb30fdbcc89ec387918714aebee6868a9f.zip |
brcm2708: update to latest patches from RPi foundation
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Diffstat (limited to 'target/linux/brcm2708/patches-4.19/950-0449-staging-bcm2835-audio-Drop-superfluous-mutex-lock-du.patch')
-rw-r--r-- | target/linux/brcm2708/patches-4.19/950-0449-staging-bcm2835-audio-Drop-superfluous-mutex-lock-du.patch | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.19/950-0449-staging-bcm2835-audio-Drop-superfluous-mutex-lock-du.patch b/target/linux/brcm2708/patches-4.19/950-0449-staging-bcm2835-audio-Drop-superfluous-mutex-lock-du.patch new file mode 100644 index 0000000000..26b48b1e00 --- /dev/null +++ b/target/linux/brcm2708/patches-4.19/950-0449-staging-bcm2835-audio-Drop-superfluous-mutex-lock-du.patch @@ -0,0 +1,49 @@ +From 32705071d884a79169ce1aa2492831452dbe92ae Mon Sep 17 00:00:00 2001 +From: Takashi Iwai <tiwai@suse.de> +Date: Tue, 4 Sep 2018 17:58:45 +0200 +Subject: [PATCH 449/782] staging: bcm2835-audio: Drop superfluous mutex lock + during prepare + +commit f0eb15d055380ff127e5f12c8fad2b36bdb3c006 upstream. + +The chip->audio_mutex is used basically for protecting the opened +stream assignment, and the prepare callback is irrelevant with it. + +Signed-off-by: Takashi Iwai <tiwai@suse.de> +Tested-by: Stefan Wahren <stefan.wahren@i2se.com> +Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> +--- + drivers/staging/vc04_services/bcm2835-audio/bcm2835-pcm.c | 8 ++------ + 1 file changed, 2 insertions(+), 6 deletions(-) + +--- a/drivers/staging/vc04_services/bcm2835-audio/bcm2835-pcm.c ++++ b/drivers/staging/vc04_services/bcm2835-audio/bcm2835-pcm.c +@@ -218,8 +218,6 @@ static int snd_bcm2835_pcm_prepare(struc + int channels; + int err; + +- mutex_lock(&chip->audio_mutex); +- + /* notify the vchiq that it should enter spdif passthrough mode by + * setting channels=0 (see + * https://github.com/raspberrypi/linux/issues/528) +@@ -233,7 +231,7 @@ static int snd_bcm2835_pcm_prepare(struc + runtime->rate, + snd_pcm_format_width(runtime->format)); + if (err < 0) +- goto out; ++ return err; + + memset(&alsa_stream->pcm_indirect, 0, sizeof(alsa_stream->pcm_indirect)); + +@@ -246,9 +244,7 @@ static int snd_bcm2835_pcm_prepare(struc + alsa_stream->pos = 0; + alsa_stream->draining = false; + +- out: +- mutex_unlock(&chip->audio_mutex); +- return err; ++ return 0; + } + + static void snd_bcm2835_pcm_transfer(struct snd_pcm_substream *substream, |