linux-kernel - [PATCH 1/3] Input: pwm-beeper: suppress error message on probe defer

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Message-Id: <1483670635-25060-2-git-send-email-david@lechnology.com>
Date:   Thu,  5 Jan 2017 20:43:52 -0600
From:   David Lechner <david@...hnology.com>
To:     Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>
Cc:     David Lechner <david@...hnology.com>, linux-input@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 1/3] Input: pwm-beeper: suppress error message on probe defer

This suppress printing an error message when pwm_get/pwm_request returns
-EPROBE_DEFER. Otherwise you get a bunch of noise in the kernel log.

Signed-off-by: David Lechner <david@...hnology.com>
---
 drivers/input/misc/pwm-beeper.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/input/misc/pwm-beeper.c b/drivers/input/misc/pwm-beeper.c
index 5f9655d..e76b710 100644
--- a/drivers/input/misc/pwm-beeper.c
+++ b/drivers/input/misc/pwm-beeper.c
@@ -109,9 +109,10 @@ static int pwm_beeper_probe(struct platform_device *pdev)
 		beeper->pwm = pwm_request(pwm_id, "pwm beeper");
 	}
 
-	if (IS_ERR(beeper->pwm)) {
-		error = PTR_ERR(beeper->pwm);
-		dev_err(&pdev->dev, "Failed to request pwm device: %d\n", error);
+	error = PTR_ERR_OR_ZERO(beeper->pwm);
+	if (error) {
+		if (error != -EPROBE_DEFER)
+			dev_err(&pdev->dev, "Failed to request pwm device\n");
 		goto err_free;
 	}
 
-- 
2.7.4