[RESEND] hwmon: pwm-fan: Report probe errors consistently

Commit Message

Robin Murphy April 12, 2019, 2:05 p.m. UTC

Printing the error code for a failure provides a head-start for
debugging, since it's often sufficient to pinpoint the origin of the
failure. We already do this for some probe-failure messages, so let's
make the rest of them consistent.

Signed-off-by: Robin Murphy <[e-mail]>
---

This is based on Stefan's "[PATCH V5 3/3] hwmon: pwm-fan: Add RPM support
via external interrupt"
 
 drivers/hwmon/pwm-fan.c | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

Comments

Guenter Roeck April 12, 2019, 5:36 p.m. UTC | #1

On Fri, Apr 12, 2019 at 03:05:23PM +0100, Robin Murphy wrote:
> Printing the error code for a failure provides a head-start for
> debugging, since it's often sufficient to pinpoint the origin of the
> failure. We already do this for some probe-failure messages, so let's
> make the rest of them consistent.
> 
> Signed-off-by: Robin Murphy <[e-mail]>

Applied to hwmon-next.

Thanks,
Guenter

Patch

diff --git a/drivers/hwmon/pwm-fan.c b/drivers/hwmon/pwm-fan.c
index 8c4c5eefd4ca..556db4bef743 100644
--- a/drivers/hwmon/pwm-fan.c
+++ b/drivers/hwmon/pwm-fan.c
@@ -330,7 +330,7 @@  static int pwm_fan_probe(struct platform_device *pdev)
 
 	ret = pwm_apply_state(ctx->pwm, &state);
 	if (ret) {
-		dev_err(&pdev->dev, "Failed to configure PWM\n");
+		dev_err(&pdev->dev, "Failed to configure PWM: %d\n", ret);
 		goto err_reg_disable;
 	}
 
@@ -348,7 +348,8 @@  static int pwm_fan_probe(struct platform_device *pdev)
 		ret = devm_request_irq(&pdev->dev, ctx->irq, pulse_handler, 0,
 				       pdev->name, ctx);
 		if (ret) {
-			dev_err(&pdev->dev, "Can't get interrupt working.\n");
+			dev_err(&pdev->dev,
+				"Failed to request interrupt: %d\n", ret);
 			goto err_pwm_disable;
 		}
 		ctx->sample_start = ktime_get();
@@ -358,8 +359,9 @@  static int pwm_fan_probe(struct platform_device *pdev)
 	hwmon = devm_hwmon_device_register_with_groups(&pdev->dev, "pwmfan",
 						       ctx, pwm_fan_groups);
 	if (IS_ERR(hwmon)) {
-		dev_err(&pdev->dev, "Failed to register hwmon device\n");
 		ret = PTR_ERR(hwmon);
+		dev_err(&pdev->dev,
+			"Failed to register hwmon device: %d\n", ret);
 		goto err_del_timer;
 	}
 
@@ -373,9 +375,10 @@  static int pwm_fan_probe(struct platform_device *pdev)
 							  "pwm-fan", ctx,
 							  &pwm_fan_cooling_ops);
 		if (IS_ERR(cdev)) {
-			dev_err(&pdev->dev,
-				"Failed to register pwm-fan as cooling device");
 			ret = PTR_ERR(cdev);
+			dev_err(&pdev->dev,
+				"Failed to register pwm-fan as cooling device: %d\n",
+				ret);
 			goto err_del_timer;
 		}
 		ctx->cdev = cdev;