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 <robin.murphy@xxxxxxx>
---
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(-)
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;
--
2.21.0.dirty
