[PATCHv4] regulator: pwm-regulator: Make use of the helper function dev_err_probe()

devm_pwm_get() can return -EPROBE_DEFER if the pwm regulator is not
ready yet. Use dev_err_probe() for pwm regulator resources
to indicate the deferral reason when waiting for the
resource to come up.

Cc: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Acked-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Anand Moon <redacted>
---
V3 - Fix the coading style issue. dropped { }
V2 - Fix the return message and drop the FIX tag in commit.
V1 - Fix the wrong probe defer for devm_regulator_register.
   - Fix the commit message.
---
 drivers/regulator/pwm-regulator.c | 12 +++---------
 1 file changed, 3 insertions(+), 9 deletions(-)

diff --git a/drivers/regulator/pwm-regulator.c b/drivers/regulator/pwm-regulator.c
index 7629476d94ae..b9eeaff1c661 100644
--- a/drivers/regulator/pwm-regulator.c
+++ b/drivers/regulator/pwm-regulator.c

@@ -352,15 +352,9 @@ static int pwm_regulator_probe(struct platform_device *pdev)
 	config.init_data = init_data;
 
 	drvdata->pwm = devm_pwm_get(&pdev->dev, NULL);
-	if (IS_ERR(drvdata->pwm)) {
-		ret = PTR_ERR(drvdata->pwm);
-		if (ret == -EPROBE_DEFER)
-			dev_dbg(&pdev->dev,
-				"Failed to get PWM, deferring probe\n");
-		else
-			dev_err(&pdev->dev, "Failed to get PWM: %d\n", ret);
-		return ret;
-	}
+	if (IS_ERR(drvdata->pwm))
+		return dev_err_probe(&pdev->dev, PTR_ERR(drvdata->pwm),
+				     "Failed to get PWM\n");
 
 	if (init_data->constraints.boot_on || init_data->constraints.always_on)
 		gpio_flags = GPIOD_OUT_HIGH;

-- 
2.33.0


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On Sat, 25 Sep 2021 17:34:12 +0000, Anand Moon wrote:

devm_pwm_get() can return -EPROBE_DEFER if the pwm regulator is not
ready yet. Use dev_err_probe() for pwm regulator resources
to indicate the deferral reason when waiting for the
resource to come up.

Applied to

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator.git for-next

Thanks!

[1/1] regulator: pwm-regulator: Make use of the helper function dev_err_probe()
      commit: e458d3f39d917770cef2ed78891349362ecd3e15

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark

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