Re: [PATCH v3 2/5] leds: lm3692x: Don't overwrite return value in error path

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Guido

Thanks for the update

Reviewed-by: Dan Murphy <dmurphy@xxxxxx>

On 9/21/19 4:12 PM, Guido Günther wrote:
The driver currently reports successful initialization on every failure
as long as it's able to power off the regulator. Don't check the return
value of regulator_disable to avoid that.

Signed-off-by: Guido Günther <agx@xxxxxxxxxxx>
Acked-by: Pavel Machek <pavel@xxxxxx>
---
  drivers/leds/leds-lm3692x.c | 9 +++++----
  1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/drivers/leds/leds-lm3692x.c b/drivers/leds/leds-lm3692x.c
index 487228c2bed2..ad76e34455ff 100644
--- a/drivers/leds/leds-lm3692x.c
+++ b/drivers/leds/leds-lm3692x.c
@@ -198,7 +198,7 @@ static int lm3692x_brightness_set(struct led_classdev *led_cdev,
  static int lm3692x_init(struct lm3692x_led *led)
  {
  	int enable_state;
-	int ret;
+	int ret, reg_ret;
if (led->regulator) {
  		ret = regulator_enable(led->regulator);
@@ -313,14 +313,15 @@ static int lm3692x_init(struct lm3692x_led *led)
  		gpiod_direction_output(led->enable_gpio, 0);
if (led->regulator) {
-		ret = regulator_disable(led->regulator);
-		if (ret)
+		reg_ret = regulator_disable(led->regulator);
+		if (reg_ret)
  			dev_err(&led->client->dev,
-				"Failed to disable regulator\n");
+				"Failed to disable regulator: %d\n", reg_ret);
  	}
return ret;
  }
+
  static int lm3692x_probe_dt(struct lm3692x_led *led)
  {
  	struct fwnode_handle *child = NULL;



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