linux-kernel - [PATCH] media: stm32-dcmi: don't print an error on probe deferral

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Date:   Wed, 7 Oct 2020 18:02:10 +0200
From:   Hugues Fruchet <hugues.fruchet@...com>
To:     Etienne Carriere <etienne.carriere@...com>,
        Alexandre Torgue <alexandre.torgue@...com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Hans Verkuil <hverkuil@...all.nl>
CC:     <linux-media@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        Alain Volmat <alain.volmat@...com>,
        Yannick Fertre <yannick.fertre@...com>,
        Philippe CORNU <philippe.cornu@...com>,
        Hugues Fruchet <hugues.fruchet@...com>
Subject: [PATCH] media: stm32-dcmi: don't print an error on probe deferral

From: Etienne Carriere <etienne.carriere@...com>

Change stm32-dcmi driver to not print an error message when the
device probe operation is deferred.

Signed-off-by: Etienne Carriere <etienne.carriere@...com>
Acked-by: Hugues Fruchet <hugues.fruchet@...com>
Tested-by: Alexandre TORGUE <alexandre.torgue@...com>
---
 drivers/media/platform/stm32/stm32-dcmi.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/media/platform/stm32/stm32-dcmi.c b/drivers/media/platform/stm32/stm32-dcmi.c
index fd1c41c..720534e 100644
--- a/drivers/media/platform/stm32/stm32-dcmi.c
+++ b/drivers/media/platform/stm32/stm32-dcmi.c
@@ -1851,7 +1851,9 @@ static int dcmi_probe(struct platform_device *pdev)
 
 	dcmi->rstc = devm_reset_control_get_exclusive(&pdev->dev, NULL);
 	if (IS_ERR(dcmi->rstc)) {
-		dev_err(&pdev->dev, "Could not get reset control\n");
+		if (PTR_ERR(dcmi->rstc) != -EPROBE_DEFER)
+			dev_err(&pdev->dev, "Could not get reset control\n");
+
 		return PTR_ERR(dcmi->rstc);
 	}
 
-- 
2.7.4