hwmon: (ads7828) Check return value of devm_regmap_init_i2c
devm_regmap_init_i2c() can fail, thus add return value checking.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
diff --git a/drivers/hwmon/ads7828.c b/drivers/hwmon/ads7828.c
index bce4e9f..6c99ee7 100644
--- a/drivers/hwmon/ads7828.c
+++ b/drivers/hwmon/ads7828.c
@@ -147,6 +147,9 @@
&ads2830_regmap_config);
}
+ if (IS_ERR(data->regmap))
+ return PTR_ERR(data->regmap);
+
data->cmd_byte = ext_vref ? ADS7828_CMD_PD1 : ADS7828_CMD_PD3;
if (!diff_input)
data->cmd_byte |= ADS7828_CMD_SD_SE;