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

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Date:   Thu, 23 Jan 2020 09:53:19 +0000
From:   Philippe CORNU <philippe.cornu@...com>
To:     Yannick FERTRE <yannick.fertre@...com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        "Alexandre TORGUE" <alexandre.torgue@...com>,
        Etienne CARRIERE <etienne.carriere@...com>,
        Hans Verkuil <hverkuil-cisco@...all.nl>,
        Benjamin Gaignard <benjamin.gaignard@...aro.org>,
        "linux-media@...r.kernel.org" <linux-media@...r.kernel.org>,
        "linux-stm32@...md-mailman.stormreply.com" 
        <linux-stm32@...md-mailman.stormreply.com>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] media: platform: stm32: don't print an error on probe
 deferral

Dears Yannick & Etienne,
Thank you for your patch,

Reviewed-by: Philippe Cornu <philippe.cornu@...com>

Philippe :-)

On 1/21/20 11:22 AM, Yannick Fertre wrote:
> From: Etienne Carriere <etienne.carriere@...com>
> 
> Change stm32-cec driver to not print an error message when the
> device probe operation is deferred.
> 
> Signed-off-by: Etienne Carriere <etienne.carriere@...com>
> ---
>   drivers/media/platform/stm32/stm32-cec.c | 4 +++-
>   1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/media/platform/stm32/stm32-cec.c b/drivers/media/platform/stm32/stm32-cec.c
> index 8a86b2c..9c137f1 100644
> --- a/drivers/media/platform/stm32/stm32-cec.c
> +++ b/drivers/media/platform/stm32/stm32-cec.c
> @@ -291,7 +291,9 @@ static int stm32_cec_probe(struct platform_device *pdev)
>   
>   	cec->clk_cec = devm_clk_get(&pdev->dev, "cec");
>   	if (IS_ERR(cec->clk_cec)) {
> -		dev_err(&pdev->dev, "Cannot get cec clock\n");
> +		if (PTR_ERR(cec->clk_cec) != -EPROBE_DEFER)
> +			dev_err(&pdev->dev, "Cannot get cec clock\n");
> +
>   		return PTR_ERR(cec->clk_cec);
>   	}
>   
>