mfd: stw481x: Check the return value of devm_regmap_init_i2c

devm_regmap_init_i2c can fail. Check for it.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

diff --git a/drivers/mfd/stw481x.c b/drivers/mfd/stw481x.c
index cc42f88..7ceb3df 100644 (file)
--- a/drivers/mfd/stw481x.c
+++ b/drivers/mfd/stw481x.c
@@ -186,6 +186,12 @@ static int stw481x_probe(struct i2c_client *client,
        i2c_set_clientdata(client, stw481x);
        stw481x->client = client;
        stw481x->map = devm_regmap_init_i2c(client, &stw481x_regmap_config);
+       if (IS_ERR(stw481x->map)) {
+               ret = PTR_ERR(stw481x->map);
+               dev_err(&client->dev, "Failed to allocate register map: %d\n",
+                       ret);
+               return ret;
+       }
 
        ret = stw481x_startup(stw481x);
        if (ret) {