From: Sasha Levin <sashal@kernel.org>
To: stable@vger.kernel.org
Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>,
Dmitry Baryshkov <dmitry.baryshkov@linaro.org>,
Mark Brown <broonie@kernel.org>, Sasha Levin <sashal@kernel.org>
Subject: [PATCH 6.1.y 2/3] ASoC: q6apm-lpass-dai: close graph on prepare errors
Date: Sun, 21 Sep 2025 19:16:10 -0400 [thread overview]
Message-ID: <20250921231611.3032852-2-sashal@kernel.org> (raw)
In-Reply-To: <20250921231611.3032852-1-sashal@kernel.org>
From: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
[ Upstream commit be1fae62cf253a5b67526cee9fbc07689b97c125 ]
There is an issue around with error handling and graph management with
the exising code, none of the error paths close the graph, which result in
leaving the loaded graph in dsp, however the driver thinks otherwise.
This can have a nasty side effect specially when we try to load the same
graph to dsp, dsp returns error which leaves the board with no sound and
requires restart.
Fix this by properly closing the graph when we hit errors between
open and close.
Fixes: 30ad723b93ad ("ASoC: qdsp6: audioreach: add q6apm lpass dai support")
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Tested-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> # X13s
Link: https://lore.kernel.org/r/20240613-q6apm-fixes-v1-1-d88953675ab3@linaro.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Stable-dep-of: 68f27f7c7708 ("ASoC: qcom: q6apm-lpass-dais: Fix NULL pointer dereference if source graph failed")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
sound/soc/qcom/qdsp6/q6apm-lpass-dais.c | 32 +++++++++++++++----------
1 file changed, 20 insertions(+), 12 deletions(-)
diff --git a/sound/soc/qcom/qdsp6/q6apm-lpass-dais.c b/sound/soc/qcom/qdsp6/q6apm-lpass-dais.c
index 420e8aa11f421..f4e18f4a6ee61 100644
--- a/sound/soc/qcom/qdsp6/q6apm-lpass-dais.c
+++ b/sound/soc/qcom/qdsp6/q6apm-lpass-dais.c
@@ -109,14 +109,17 @@ static void q6apm_lpass_dai_shutdown(struct snd_pcm_substream *substream, struct
struct q6apm_lpass_dai_data *dai_data = dev_get_drvdata(dai->dev);
int rc;
- if (!dai_data->is_port_started[dai->id])
- return;
- rc = q6apm_graph_stop(dai_data->graph[dai->id]);
- if (rc < 0)
- dev_err(dai->dev, "fail to close APM port (%d)\n", rc);
+ if (dai_data->is_port_started[dai->id]) {
+ rc = q6apm_graph_stop(dai_data->graph[dai->id]);
+ dai_data->is_port_started[dai->id] = false;
+ if (rc < 0)
+ dev_err(dai->dev, "fail to close APM port (%d)\n", rc);
+ }
- q6apm_graph_close(dai_data->graph[dai->id]);
- dai_data->is_port_started[dai->id] = false;
+ if (dai_data->graph[dai->id]) {
+ q6apm_graph_close(dai_data->graph[dai->id]);
+ dai_data->graph[dai->id] = NULL;
+ }
}
static int q6apm_lpass_dai_prepare(struct snd_pcm_substream *substream, struct snd_soc_dai *dai)
@@ -131,8 +134,10 @@ static int q6apm_lpass_dai_prepare(struct snd_pcm_substream *substream, struct s
q6apm_graph_stop(dai_data->graph[dai->id]);
dai_data->is_port_started[dai->id] = false;
- if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
q6apm_graph_close(dai_data->graph[dai->id]);
+ dai_data->graph[dai->id] = NULL;
+ }
}
/**
@@ -151,26 +156,29 @@ static int q6apm_lpass_dai_prepare(struct snd_pcm_substream *substream, struct s
cfg->direction = substream->stream;
rc = q6apm_graph_media_format_pcm(dai_data->graph[dai->id], cfg);
-
if (rc) {
dev_err(dai->dev, "Failed to set media format %d\n", rc);
- return rc;
+ goto err;
}
rc = q6apm_graph_prepare(dai_data->graph[dai->id]);
if (rc) {
dev_err(dai->dev, "Failed to prepare Graph %d\n", rc);
- return rc;
+ goto err;
}
rc = q6apm_graph_start(dai_data->graph[dai->id]);
if (rc < 0) {
dev_err(dai->dev, "fail to start APM port %x\n", dai->id);
- return rc;
+ goto err;
}
dai_data->is_port_started[dai->id] = true;
return 0;
+err:
+ q6apm_graph_close(dai_data->graph[dai->id]);
+ dai_data->graph[dai->id] = NULL;
+ return rc;
}
static int q6apm_lpass_dai_startup(struct snd_pcm_substream *substream, struct snd_soc_dai *dai)
--
2.51.0
next prev parent reply other threads:[~2025-09-21 23:16 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-21 12:28 FAILED: patch "[PATCH] ASoC: qcom: q6apm-lpass-dais: Fix NULL pointer dereference if" failed to apply to 6.1-stable tree gregkh
2025-09-21 23:16 ` [PATCH 6.1.y 1/3] ASoC: qcom: q6apm-lpass-dai: close graphs before opening a new one Sasha Levin
2025-09-21 23:16 ` Sasha Levin [this message]
2025-09-21 23:16 ` [PATCH 6.1.y 3/3] ASoC: qcom: q6apm-lpass-dais: Fix NULL pointer dereference if source graph failed Sasha Levin
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