linux-kernel - Re: [PATCH 03/11] spi: atmel: Simplify with dev_err

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Message-ID: <20200901191252.GL3204668@piout.net>
Date:   Tue, 1 Sep 2020 21:12:52 +0200
From:   Alexandre Belloni <alexandre.belloni@...tlin.com>
To:     Krzysztof Kozlowski <krzk@...nel.org>
Cc:     Tudor Ambarus <tudor.ambarus@...rochip.com>,
        Mark Brown <broonie@...nel.org>,
        Nicolas Ferre <nicolas.ferre@...rochip.com>,
        Ludovic Desroches <ludovic.desroches@...rochip.com>,
        Nicolas Saenz Julienne <nsaenzjulienne@...e.de>,
        Florian Fainelli <f.fainelli@...il.com>,
        Ray Jui <rjui@...adcom.com>,
        Scott Branden <sbranden@...adcom.com>,
        bcm-kernel-feedback-list@...adcom.com,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Orson Zhai <orsonzhai@...il.com>,
        Baolin Wang <baolin.wang7@...il.com>,
        Chunyan Zhang <zhang.lyra@...il.com>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Alexandre Torgue <alexandre.torgue@...com>,
        Masahisa Kojima <masahisa.kojima@...aro.org>,
        Jassi Brar <jaswinder.singh@...aro.org>,
        Laxman Dewangan <ldewangan@...dia.com>,
        Thierry Reding <thierry.reding@...il.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        linux-spi@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux-rpi-kernel@...ts.infradead.org,
        linux-arm-msm@...r.kernel.org,
        linux-stm32@...md-mailman.stormreply.com,
        linux-tegra@...r.kernel.org
Subject: Re: [PATCH 03/11] spi: atmel: Simplify with dev_err_probe()

On 01/09/2020 17:27:05+0200, Krzysztof Kozlowski wrote:
> Common pattern of handling deferred probe can be simplified with
> dev_err_probe().  Less code and the error value gets printed.
> 
> Signed-off-by: Krzysztof Kozlowski <krzk@...nel.org>
Reviewed-by: Alexandre Belloni <alexandre.belloni@...tlin.com>

> ---
>  drivers/spi/spi-atmel.c | 5 ++---
>  1 file changed, 2 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/spi/spi-atmel.c b/drivers/spi/spi-atmel.c
> index 2cfe6253a784..7c68d5cdbdc6 100644
> --- a/drivers/spi/spi-atmel.c
> +++ b/drivers/spi/spi-atmel.c
> @@ -513,9 +513,8 @@ static int atmel_spi_configure_dma(struct spi_master *master,
>  
>  	master->dma_tx = dma_request_chan(dev, "tx");
>  	if (IS_ERR(master->dma_tx)) {
> -		err = PTR_ERR(master->dma_tx);
> -		if (err != -EPROBE_DEFER)
> -			dev_err(dev, "No TX DMA channel, DMA is disabled\n");
> +		err = dev_err_probe(dev, PTR_ERR(master->dma_tx),
> +				    "No TX DMA channel, DMA is disabled\n");
>  		goto error_clear;
>  	}
>  
> -- 
> 2.17.1
> 

-- 
Alexandre Belloni, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com