leds: an30259a: add a check for devm_regmap_init_i2c

an30259a_probe misses a check for devm_regmap_init_i2c and may cause
problems.
Add a check and print errors like other leds drivers.

Signed-off-by: Chuhong Yuan <hslester96@gmail.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>

diff --git a/drivers/leds/leds-an30259a.c b/drivers/leds/leds-an30259a.c
index 250dc9d..82350a2 100644 (file)
--- a/drivers/leds/leds-an30259a.c
+++ b/drivers/leds/leds-an30259a.c
@@ -305,6 +305,13 @@ static int an30259a_probe(struct i2c_client *client)
 
        chip->regmap = devm_regmap_init_i2c(client, &an30259a_regmap_config);
 
+       if (IS_ERR(chip->regmap)) {
+               err = PTR_ERR(chip->regmap);
+               dev_err(&client->dev, "Failed to allocate register map: %d\n",
+                       err);
+               goto exit;
+       }
+
        for (i = 0; i < chip->num_leds; i++) {
                struct led_init_data init_data = {};