linux-kernel - [PATCH 1/2] hwmon: pwm-fan: Silence error on probe deferral

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Message-Id: <20180921101048.11679-1-thierry.reding@gmail.com>
Date:   Fri, 21 Sep 2018 12:10:47 +0200
From:   Thierry Reding <thierry.reding@...il.com>
To:     Jean Delvare <jdelvare@...e.com>,
        Guenter Roeck <linux@...ck-us.net>
Cc:     Kamil Debski <kamil@...as.org>,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
        linux-hwmon@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 1/2] hwmon: pwm-fan: Silence error on probe deferral

From: Thierry Reding <treding@...dia.com>

Probe deferrals aren't actual errors, so silence the error message in
case the PWM cannot yet be acquired.

Signed-off-by: Thierry Reding <treding@...dia.com>
---
 drivers/hwmon/pwm-fan.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/hwmon/pwm-fan.c b/drivers/hwmon/pwm-fan.c
index 7838af58f92d..936aaf76dd6e 100644
--- a/drivers/hwmon/pwm-fan.c
+++ b/drivers/hwmon/pwm-fan.c
@@ -221,8 +221,12 @@ static int pwm_fan_probe(struct platform_device *pdev)
 
 	ctx->pwm = devm_of_pwm_get(&pdev->dev, pdev->dev.of_node, NULL);
 	if (IS_ERR(ctx->pwm)) {
-		dev_err(&pdev->dev, "Could not get PWM\n");
-		return PTR_ERR(ctx->pwm);
+		ret = PTR_ERR(ctx->pwm);
+
+		if (ret != -EPROBE_DEFER)
+			dev_err(&pdev->dev, "Could not get PWM: %d\n", ret);
+
+		return ret;
 	}
 
 	platform_set_drvdata(pdev, ctx);
-- 
2.19.0