ASoC: rt5663: check the return value of devm_kzalloc() in rt5663_parse_dp()

The function devm_kzalloc() in rt5663_parse_dp() can fail, so its return
value should be checked.

Fixes: 457c25efc592 ("ASoC: rt5663: Add the function of impedance sensing")
Reported-by: TOTE Robot <oslab@tsinghua.edu.cn>
Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Link: https://lore.kernel.org/r/20220225131030.27248-1-baijiaju1990@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/codecs/rt5663.c b/sound/soc/codecs/rt5663.c
index 2138f62..3a8fba1 100644 (file)
--- a/sound/soc/codecs/rt5663.c
+++ b/sound/soc/codecs/rt5663.c
@@ -3478,6 +3478,8 @@ 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);
+               if (!rt5663->imp_table)
+                       return -ENOMEM;
                ret = device_property_read_u32_array(dev,
                        "realtek,impedance_sensing_table",
                        (u32 *)rt5663->imp_table, table_size);