linux-kernel - [PATCH 4.19 127/148] leds: pwm: silently error out on EPROBE

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Date:   Fri, 11 Jan 2019 15:15:05 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Jerome Brunet <jbrunet@...libre.com>,
        Jacek Anaszewski <jacek.anaszewski@...il.com>,
        Benjamin Drung <bdrung@...ian.org>
Subject: [PATCH 4.19 127/148] leds: pwm: silently error out on EPROBE_DEFER

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Jerome Brunet <jbrunet@...libre.com>

commit 9aec30371fb095a0c9415f3f0146ae269c3713d8 upstream.

When probing, if we fail to get the pwm due to probe deferal, we shouldn't
print an error message. Just be silent in this case.

Signed-off-by: Jerome Brunet <jbrunet@...libre.com>
Signed-off-by: Jacek Anaszewski <jacek.anaszewski@...il.com>
Cc: Benjamin Drung <bdrung@...ian.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/leds/leds-pwm.c |    5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

--- a/drivers/leds/leds-pwm.c
+++ b/drivers/leds/leds-pwm.c
@@ -100,8 +100,9 @@ static int led_pwm_add(struct device *de
 		led_data->pwm = devm_pwm_get(dev, led->name);
 	if (IS_ERR(led_data->pwm)) {
 		ret = PTR_ERR(led_data->pwm);
-		dev_err(dev, "unable to request PWM for %s: %d\n",
-			led->name, ret);
+		if (ret != -EPROBE_DEFER)
+			dev_err(dev, "unable to request PWM for %s: %d\n",
+				led->name, ret);
 		return ret;
 	}