regulator: fp9931: Add missing memory allocation check

Add a check for devm_kzalloc failure in fp9931_probe to prevent a
null pointer dereference.

Fixes: 12d821bd13d4 ("regulator: Add FP9931/JD9930 driver")
Signed-off-by: Felix Gu <gu_0233@qq.com>
Link: https://patch.msgid.link/tencent_5FCF2108621C51007E5526A7C60A5CC1F306@qq.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/drivers/regulator/fp9931.c b/drivers/regulator/fp9931.c
index 69b3c71..7fbcc63 100644 (file)
--- a/drivers/regulator/fp9931.c
+++ b/drivers/regulator/fp9931.c
@@ -439,6 +439,9 @@ static int fp9931_probe(struct i2c_client *client)
        int i;
 
        data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL);
+       if (!data)
+               return -ENOMEM;
+
        data->regmap = devm_regmap_init_i2c(client, &regmap_config);
        if (IS_ERR(data->regmap))
                return dev_err_probe(&client->dev, PTR_ERR(data->regmap),