diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.19/950-0379-staging-bcm2835-audio-Drop-useless-running-flag-and-.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.19/950-0379-staging-bcm2835-audio-Drop-useless-running-flag-and-.patch | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.19/950-0379-staging-bcm2835-audio-Drop-useless-running-flag-and-.patch b/target/linux/brcm2708/patches-4.19/950-0379-staging-bcm2835-audio-Drop-useless-running-flag-and-.patch new file mode 100644 index 0000000000..2a8197c68d --- /dev/null +++ b/target/linux/brcm2708/patches-4.19/950-0379-staging-bcm2835-audio-Drop-useless-running-flag-and-.patch @@ -0,0 +1,106 @@ +From e8a202b4d06a07ba42b91a1dd3c2d9e9cedff32d Mon Sep 17 00:00:00 2001 +From: Takashi Iwai <tiwai@suse.de> +Date: Tue, 4 Sep 2018 17:58:37 +0200 +Subject: [PATCH] staging: bcm2835-audio: Drop useless running flag and + check + +commit 02f2376321d75e78117f39ff81f215254ee6b4ef upstream. + +The running flag of alsa_stream is basically useless. The running +state is strictly controlled in ALSA PCM core side, hence the check in +PCM trigger and close callbacks are superfluous. + +Also, the prefill ack at trigger start became superfluous nowadays +with the ALSA PCM core update. + +Let's rip them off. + +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> +--- + .../vc04_services/bcm2835-audio/bcm2835-pcm.c | 46 ++++--------------- + .../vc04_services/bcm2835-audio/bcm2835.h | 1 - + 2 files changed, 8 insertions(+), 39 deletions(-) + +--- a/drivers/staging/vc04_services/bcm2835-audio/bcm2835-pcm.c ++++ b/drivers/staging/vc04_services/bcm2835-audio/bcm2835-pcm.c +@@ -187,19 +187,6 @@ static int snd_bcm2835_playback_close(st + + audio_info("Alsa close\n"); + +- /* +- * Call stop if it's still running. This happens when app +- * is force killed and we don't get a stop trigger. +- */ +- if (alsa_stream->running) { +- int err; +- +- err = bcm2835_audio_stop(alsa_stream); +- alsa_stream->running = 0; +- if (err) +- audio_error(" Failed to STOP alsa device\n"); +- } +- + alsa_stream->period_size = 0; + alsa_stream->buffer_size = 0; + +@@ -324,27 +311,13 @@ static int snd_bcm2835_pcm_trigger(struc + + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: +- audio_debug("bcm2835_AUDIO_TRIGGER_START running=%d\n", +- alsa_stream->running); +- if (!alsa_stream->running) { +- err = bcm2835_audio_start(alsa_stream); +- if (!err) { +- alsa_stream->pcm_indirect.hw_io = +- alsa_stream->pcm_indirect.hw_data = +- bytes_to_frames(runtime, +- alsa_stream->pos); +- substream->ops->ack(substream); +- alsa_stream->running = 1; +- alsa_stream->draining = 1; +- } else { +- audio_error(" Failed to START alsa device (%d)\n", err); +- } +- } ++ err = bcm2835_audio_start(alsa_stream); ++ if (!err) ++ alsa_stream->draining = 1; ++ else ++ audio_error(" Failed to START alsa device (%d)\n", err); + break; + case SNDRV_PCM_TRIGGER_STOP: +- audio_debug +- ("bcm2835_AUDIO_TRIGGER_STOP running=%d draining=%d\n", +- alsa_stream->running, runtime->status->state == SNDRV_PCM_STATE_DRAINING); + if (runtime->status->state == SNDRV_PCM_STATE_DRAINING) { + audio_info("DRAINING\n"); + alsa_stream->draining = 1; +@@ -352,12 +325,9 @@ static int snd_bcm2835_pcm_trigger(struc + audio_info("DROPPING\n"); + alsa_stream->draining = 0; + } +- if (alsa_stream->running) { +- err = bcm2835_audio_stop(alsa_stream); +- if (err != 0) +- audio_error(" Failed to STOP alsa device (%d)\n", err); +- alsa_stream->running = 0; +- } ++ err = bcm2835_audio_stop(alsa_stream); ++ if (err != 0) ++ audio_error(" Failed to STOP alsa device (%d)\n", err); + break; + default: + err = -EINVAL; +--- a/drivers/staging/vc04_services/bcm2835-audio/bcm2835.h ++++ b/drivers/staging/vc04_services/bcm2835-audio/bcm2835.h +@@ -121,7 +121,6 @@ struct bcm2835_alsa_stream { + + spinlock_t lock; + +- int running; + int draining; + + int channels; |