diff options
Diffstat (limited to 'drivers/leds/leds-lp5521.c')
| -rw-r--r-- | drivers/leds/leds-lp5521.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/drivers/leds/leds-lp5521.c b/drivers/leds/leds-lp5521.c index 966f158a07db..cb8a5220200b 100644 --- a/drivers/leds/leds-lp5521.c +++ b/drivers/leds/leds-lp5521.c @@ -152,7 +152,7 @@ static int lp5521_read(struct i2c_client *client, u8 reg, u8 *buf) ret = i2c_smbus_read_byte_data(client, reg); if (ret < 0) - return -EIO; + return ret; *buf = ret; return 0; @@ -616,7 +616,7 @@ static ssize_t store_led_pattern(struct device *dev, unsigned long val; int ret; - ret = strict_strtoul(buf, 16, &val); + ret = kstrtoul(buf, 16, &val); if (ret) return ret; @@ -788,10 +788,17 @@ static int lp5521_probe(struct i2c_client *client, * LP5521_REG_ENABLE register will not have any effect - strange! */ ret = lp5521_read(client, LP5521_REG_R_CURRENT, &buf); - if (ret || buf != LP5521_REG_R_CURR_DEFAULT) { + if (ret) { dev_err(&client->dev, "error in resetting chip\n"); goto fail2; } + if (buf != LP5521_REG_R_CURR_DEFAULT) { + dev_err(&client->dev, + "unexpected data in register (expected 0x%x got 0x%x)\n", + LP5521_REG_R_CURR_DEFAULT, buf); + ret = -EINVAL; + goto fail2; + } usleep_range(10000, 20000); ret = lp5521_detect(client); |