From e1e22179376f14ef50126b2537af108ee493f840 Mon Sep 17 00:00:00 2001 From: Srinivas Kandagatla Date: Tue, 30 Nov 2021 16:31:10 +0000 Subject: [PATCH] ASoC: qdsp6: q6routing: Fix return value from msm_routing_put_audio_mixer commit 4739d88ad8e1900f809f8a5c98f3c1b65bf76220 upstream. msm_routing_put_audio_mixer() can return incorrect value in various scenarios. scenario 1: amixer cset iface=MIXER,name='SLIMBUS_0_RX Audio Mixer MultiMedia1' 1 amixer cset iface=MIXER,name='SLIMBUS_0_RX Audio Mixer MultiMedia1' 0 return value is 0 instead of 1 eventhough value was changed scenario 2: amixer cset iface=MIXER,name='SLIMBUS_0_RX Audio Mixer MultiMedia1' 1 amixer cset iface=MIXER,name='SLIMBUS_0_RX Audio Mixer MultiMedia1' 1 return value is 1 instead of 0 eventhough the value was not changed scenario 3: amixer cset iface=MIXER,name='SLIMBUS_0_RX Audio Mixer MultiMedia1' 0 return value is 1 instead of 0 eventhough the value was not changed Fix this by adding checks, so that change notifications are sent correctly. Fixes: e3a33673e845 ("ASoC: qdsp6: q6routing: Add q6routing driver") Signed-off-by: Srinivas Kandagatla Link: https://lore.kernel.org/r/20211130163110.5628-1-srinivas.kandagatla@linaro.org Signed-off-by: Mark Brown Signed-off-by: Greg Kroah-Hartman --- sound/soc/qcom/qdsp6/q6routing.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/sound/soc/qcom/qdsp6/q6routing.c b/sound/soc/qcom/qdsp6/q6routing.c index 243b8179e59d..18c90bb4922b 100644 --- a/sound/soc/qcom/qdsp6/q6routing.c +++ b/sound/soc/qcom/qdsp6/q6routing.c @@ -492,14 +492,16 @@ static int msm_routing_put_audio_mixer(struct snd_kcontrol *kcontrol, struct session_data *session = &data->sessions[session_id]; if (ucontrol->value.integer.value[0]) { + if (session->port_id == be_id) + return 0; + session->port_id = be_id; snd_soc_dapm_mixer_update_power(dapm, kcontrol, 1, update); } else { - if (session->port_id == be_id) { - session->port_id = -1; + if (session->port_id == -1 || session->port_id != be_id) return 0; - } + session->port_id = -1; snd_soc_dapm_mixer_update_power(dapm, kcontrol, 0, update); }