regulator: tps65185: check devm_kzalloc() result in probe

tps65185_probe() dereferences the allocation result immediately by using data->regmap. If devm_kzalloc() returns NULL under memory pressure, this leads to a NULL pointer dereference.

Add the missing allocation check and return -ENOMEM on failure.

Signed-off-by: Yufan Chen <ericterminal@gmail.com>
Link: https://patch.msgid.link/20260222104035.90790-1-ericterminal@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/drivers/regulator/tps65185.c b/drivers/regulator/tps65185.c
index 3286c9ab33d026a6cabae6079ef258a1520566a8..786622d8d5980c9904f59b18bdc75c687f04dd2d 100644 (file)
--- a/drivers/regulator/tps65185.c
+++ b/drivers/regulator/tps65185.c
@@ -332,6 +332,9 @@ static int tps65185_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),