linux-kernel - Re: [PATCH 2/5] Input: mxs-lradc-ts.c: Use devm_platform_ioremap

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Date:   Tue, 16 Jul 2019 09:32:13 +0200
From:   Dmitry Torokhov <dmitry.torokhov@...il.com>
To:     Mukesh Ojha <mojha@...eaurora.org>
Cc:     shawnguo@...nel.org, s.hauer@...gutronix.de, linux-imx@....com,
        linux-input@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/5] Input: mxs-lradc-ts.c: Use
 devm_platform_ioremap_resource()

On Thu, Apr 04, 2019 at 12:47:20PM +0530, Mukesh Ojha wrote:
> devm_platform_ioremap_resource() internally have platform_get_resource()
> and devm_ioremap_resource() in it. So instead of calling them separately
> use devm_platform_ioremap_resource() directly.
> 
> Signed-off-by: Mukesh Ojha <mojha@...eaurora.org>
> ---
>  drivers/input/touchscreen/mxs-lradc-ts.c | 6 +-----
>  1 file changed, 1 insertion(+), 5 deletions(-)
> 
> diff --git a/drivers/input/touchscreen/mxs-lradc-ts.c b/drivers/input/touchscreen/mxs-lradc-ts.c
> index c850b51..af047fa 100644
> --- a/drivers/input/touchscreen/mxs-lradc-ts.c
> +++ b/drivers/input/touchscreen/mxs-lradc-ts.c
> @@ -615,7 +615,6 @@ static int mxs_lradc_ts_probe(struct platform_device *pdev)
>  	struct device_node *node = dev->parent->of_node;
>  	struct mxs_lradc *lradc = dev_get_drvdata(dev->parent);
>  	struct mxs_lradc_ts *ts;
> -	struct resource *iores;
>  	int ret, irq, virq, i;
>  	u32 ts_wires = 0, adapt;
>  
> @@ -629,10 +628,7 @@ static int mxs_lradc_ts_probe(struct platform_device *pdev)
>  	ts->dev = dev;
>  	spin_lock_init(&ts->lock);
>  
> -	iores = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> -	if (!iores)
> -		return -EINVAL;
> -	ts->base = devm_ioremap(dev, iores->start, resource_size(iores));
> +	ts->base = devm_platform_ioremap_resource(pdev, 0);
>  	if (!ts->base)
>  		return -ENOMEM;

This driver did not implement error handling properly (should have used
IS_ERR()/PTR_ERR()), I adjusted and applied.

Thanks.

-- 
Dmitry