[PATCH 5/5] ASoC: stm32: sai: fix set_sync service

From: Olivier Moysan
Date: Thu Feb 28 2019 - 08:20:21 EST


Add error check on set_sync function return.
Add of_node_put() as of_get_parent() takes a reference
which has to be released.

Signed-off-by: Olivier Moysan <olivier.moysan@xxxxxx>
---
sound/soc/stm/stm32_sai.c | 8 +++++---
sound/soc/stm/stm32_sai_sub.c | 8 +++++---
2 files changed, 10 insertions(+), 6 deletions(-)

diff --git a/sound/soc/stm/stm32_sai.c b/sound/soc/stm/stm32_sai.c
index 14c9591aae42..d68d62f12df5 100644
--- a/sound/soc/stm/stm32_sai.c
+++ b/sound/soc/stm/stm32_sai.c
@@ -105,6 +105,7 @@ static int stm32_sai_set_sync(struct stm32_sai_data *sai_client,
if (!pdev) {
dev_err(&sai_client->pdev->dev,
"Device not found for node %pOFn\n", np_provider);
+ of_node_put(np_provider);
return -ENODEV;
}

@@ -113,19 +114,20 @@ static int stm32_sai_set_sync(struct stm32_sai_data *sai_client,
dev_err(&sai_client->pdev->dev,
"SAI sync provider data not found\n");
ret = -EINVAL;
- goto out_put_dev;
+ goto error;
}

/* Configure sync client */
ret = stm32_sai_sync_conf_client(sai_client, synci);
if (ret < 0)
- goto out_put_dev;
+ goto error;

/* Configure sync provider */
ret = stm32_sai_sync_conf_provider(sai_provider, synco);

-out_put_dev:
+error:
put_device(&pdev->dev);
+ of_node_put(np_provider);
return ret;
}

diff --git a/sound/soc/stm/stm32_sai_sub.c b/sound/soc/stm/stm32_sai_sub.c
index cb658463ccd1..55d802f51c15 100644
--- a/sound/soc/stm/stm32_sai_sub.c
+++ b/sound/soc/stm/stm32_sai_sub.c
@@ -1106,7 +1106,7 @@ static int stm32_sai_pcm_new(struct snd_soc_pcm_runtime *rtd,
static int stm32_sai_dai_probe(struct snd_soc_dai *cpu_dai)
{
struct stm32_sai_sub_data *sai = dev_get_drvdata(cpu_dai->dev);
- int cr1 = 0, cr1_mask;
+ int cr1 = 0, cr1_mask, ret;

sai->cpu_dai = cpu_dai;

@@ -1136,8 +1136,10 @@ static int stm32_sai_dai_probe(struct snd_soc_dai *cpu_dai)
/* Configure synchronization */
if (sai->sync == SAI_SYNC_EXTERNAL) {
/* Configure synchro client and provider */
- sai->pdata->set_sync(sai->pdata, sai->np_sync_provider,
- sai->synco, sai->synci);
+ ret = sai->pdata->set_sync(sai->pdata, sai->np_sync_provider,
+ sai->synco, sai->synci);
+ if (ret)
+ return ret;
}

cr1_mask |= SAI_XCR1_SYNCEN_MASK;
--
2.7.4