diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.4/0311-Revert-bcm2835-do-not-require-substream-for-accessin.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.4/0311-Revert-bcm2835-do-not-require-substream-for-accessin.patch | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.4/0311-Revert-bcm2835-do-not-require-substream-for-accessin.patch b/target/linux/brcm2708/patches-4.4/0311-Revert-bcm2835-do-not-require-substream-for-accessin.patch new file mode 100644 index 0000000000..152ab91980 --- /dev/null +++ b/target/linux/brcm2708/patches-4.4/0311-Revert-bcm2835-do-not-require-substream-for-accessin.patch @@ -0,0 +1,51 @@ +From 75045e771ab867b6cd397b1d1280e81584ddc401 Mon Sep 17 00:00:00 2001 +From: popcornmix <popcornmix@gmail.com> +Date: Fri, 29 Apr 2016 17:27:36 +0100 +Subject: [PATCH 311/423] Revert "bcm2835: do not require substream for + accessing chmap ctl" + +This reverts commit a05b4815196018c329ea98c24205bc6fa9c097e0. +--- + sound/arm/bcm2835-ctl.c | 10 +++++++++- + 1 file changed, 9 insertions(+), 1 deletion(-) + +--- a/sound/arm/bcm2835-ctl.c ++++ b/sound/arm/bcm2835-ctl.c +@@ -489,6 +489,8 @@ static int snd_bcm2835_chmap_ctl_get(str + { + struct snd_pcm_chmap *info = snd_kcontrol_chip(kcontrol); + bcm2835_chip_t *chip = info->private_data; ++ unsigned int idx = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id); ++ struct snd_pcm_substream *substream = snd_pcm_chmap_substream(info, idx); + struct cea_channel_speaker_allocation *ch = NULL; + int res = 0; + int cur = 0; +@@ -497,6 +499,11 @@ static int snd_bcm2835_chmap_ctl_get(str + if (mutex_lock_interruptible(&chip->audio_mutex)) + return -EINTR; + ++ if (!substream || !substream->runtime) { ++ res = -ENODEV; ++ goto unlock; ++ } ++ + for (i = 0; i < ARRAY_SIZE(channel_allocations); i++) { + if (channel_allocations[i].ca_index == chip->cea_chmap) + ch = &channel_allocations[i]; +@@ -514,6 +521,7 @@ static int snd_bcm2835_chmap_ctl_get(str + while (cur < 8) + ucontrol->value.integer.value[cur++] = SNDRV_CHMAP_NA; + ++unlock: + mutex_unlock(&chip->audio_mutex); + return res; + } +@@ -533,7 +541,7 @@ static int snd_bcm2835_chmap_ctl_put(str + return -EINTR; + + if (!substream || !substream->runtime) { +- /* ignore and return success for the sake of alsactl */ ++ res = -ENODEV; + goto unlock; + } + |