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path: root/drivers/video/backlight/adp8870_bl.c
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Diffstat (limited to 'drivers/video/backlight/adp8870_bl.c')
-rw-r--r--drivers/video/backlight/adp8870_bl.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/video/backlight/adp8870_bl.c b/drivers/video/backlight/adp8870_bl.c
index 251af4d38d86..037e43083343 100644
--- a/drivers/video/backlight/adp8870_bl.c
+++ b/drivers/video/backlight/adp8870_bl.c
@@ -144,6 +144,7 @@ static int adp8870_read(struct i2c_client *client, int reg, uint8_t *val)
static int adp8870_write(struct i2c_client *client, u8 reg, u8 val)
{
int ret = i2c_smbus_write_byte_data(client, reg, val);
+
if (ret)
dev_err(&client->dev, "failed to write\n");
@@ -195,6 +196,7 @@ static int adp8870_clr_bits(struct i2c_client *client, int reg, uint8_t bit_mask
static void adp8870_led_work(struct work_struct *work)
{
struct adp8870_led *led = container_of(work, struct adp8870_led, work);
+
adp8870_write(led->client, ADP8870_ISC1 + led->id - 1,
led->new_brightness >> 1);
}
@@ -399,6 +401,7 @@ static int adp8870_bl_set(struct backlight_device *bl, int brightness)
static int adp8870_bl_update_status(struct backlight_device *bl)
{
int brightness = bl->props.brightness;
+
if (bl->props.power != FB_BLANK_UNBLANK)
brightness = 0;
@@ -649,6 +652,7 @@ static ssize_t adp8870_bl_l1_daylight_max_store(struct device *dev,
{
struct adp8870_bl *data = dev_get_drvdata(dev);
int ret = kstrtoul(buf, 10, &data->cached_daylight_max);
+
if (ret)
return ret;