[PATCH 5.4 140/320] ASoC: rt5663: Handle device_property_read_u32_array error codes

Greg Kroah-Hartman
2022-01-24T19:33:30Z

From: Jiasheng Jiang <jiasheng@iscas.ac.cn>

[ Upstream commit 2167c0b205960607fb136b4bb3c556a62be1569a ]

The return value of device_property_read_u32_array() is not always 0.
To catch the exception in case that devm_kzalloc failed and the
rt5663->imp_table was NULL, which caused the failure of
device_property_read_u32_array.

Fixes: 450f0f6a8fb4 ("ASoC: rt5663: Add the manual offset field to compensate the DC offset")
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Link: https://lore.kernel.org/r/20211215031550.70702-1-jiasheng@iscas.ac.cn
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
sound/soc/codecs/rt5663.c | 12 +++++++++---
1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/sound/soc/codecs/rt5663.c b/sound/soc/codecs/rt5663.c
index 2943692f66edd..3610be1590fcc 100644
--- a/sound/soc/codecs/rt5663.c
+++ b/sound/soc/codecs/rt5663.c
@@ -3461,6 +3461,7 @@ static void rt5663_calibrate(struct rt5663_priv *rt5663)
static int rt5663_parse_dp(struct rt5663_priv *rt5663, struct device *dev)
{
int table_size;
+ int ret;

device_property_read_u32(dev, "realtek,dc_offset_l_manual",
&rt5663->pdata.dc_offset_l_manual);
@@ -3477,9 +3478,11 @@ static int rt5663_parse_dp(struct rt5663_priv *rt5663, struct device *dev)
table_size = sizeof(struct impedance_mapping_table) *
rt5663->pdata.impedance_sensing_num;
rt5663->imp_table = devm_kzalloc(dev, table_size, GFP_KERNEL);
- device_property_read_u32_array(dev,
+ ret = device_property_read_u32_array(dev,
"realtek,impedance_sensing_table",
(u32 *)rt5663->imp_table, table_size);
+ if (ret)
+ return ret;
}

return 0;
@@ -3504,8 +3507,11 @@ static int rt5663_i2c_probe(struct i2c_client *i2c,

if (pdata)
rt5663->pdata = *pdata;
- else
- rt5663_parse_dp(rt5663, &i2c->dev);
+ else {
+ ret = rt5663_parse_dp(rt5663, &i2c->dev);
+ if (ret)
+ return ret;
+ }

for (i = 0; i < ARRAY_SIZE(rt5663->supplies); i++)
rt5663->supplies[i].supply = rt5663_supply_names[i];
--
2.34.1