diff options
| -rw-r--r-- | drivers/video/backlight/adp5520_bl.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/video/backlight/adp5520_bl.c b/drivers/video/backlight/adp5520_bl.c index 962d120f6d0d..c84701b7ca6e 100644 --- a/drivers/video/backlight/adp5520_bl.c +++ b/drivers/video/backlight/adp5520_bl.c @@ -143,13 +143,16 @@ static int adp5520_bl_setup(struct backlight_device *bl) static ssize_t adp5520_show(struct device *dev, char *buf, int reg) { struct adp5520_bl *data = dev_get_drvdata(dev); - int error; + int ret; uint8_t reg_val; mutex_lock(&data->lock); - error = adp5520_read(data->master, reg, ®_val); + ret = adp5520_read(data->master, reg, ®_val); mutex_unlock(&data->lock); + if (ret < 0) + return ret; + return sprintf(buf, "%u\n", reg_val); } |