linux-kernel - Re: [PATCH 28/30] usb: ehci-st: Use devm_platform_get_and_ioremap

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Message-ID: <c54227f2-9bba-c4bb-baf9-0530b4a644bd@foss.st.com>
Date:   Mon, 28 Aug 2023 11:08:35 +0200
From:   Patrice CHOTARD <patrice.chotard@...s.st.com>
To:     Yangtao Li <frank.li@...o.com>,
        Alan Stern <stern@...land.harvard.edu>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
CC:     <linux-usb@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 28/30] usb: ehci-st: Use
 devm_platform_get_and_ioremap_resource()



On 7/26/23 13:38, Yangtao Li wrote:
> Convert platform_get_resource(), devm_ioremap_resource() to a single
> call to devm_platform_get_and_ioremap_resource(), as this is exactly
> what this function does.
> 
> Signed-off-by: Yangtao Li <frank.li@...o.com>
> ---
>  drivers/usb/host/ehci-st.c | 12 +++---------
>  1 file changed, 3 insertions(+), 9 deletions(-)
> 
> diff --git a/drivers/usb/host/ehci-st.c b/drivers/usb/host/ehci-st.c
> index ee0976b815b4..2dbb0d86daaa 100644
> --- a/drivers/usb/host/ehci-st.c
> +++ b/drivers/usb/host/ehci-st.c
> @@ -158,11 +158,6 @@ static int st_ehci_platform_probe(struct platform_device *dev)
>  	irq = platform_get_irq(dev, 0);
>  	if (irq < 0)
>  		return irq;
> -	res_mem = platform_get_resource(dev, IORESOURCE_MEM, 0);
> -	if (!res_mem) {
> -		dev_err(&dev->dev, "no memory resource provided");
> -		return -ENXIO;
> -	}
>  
>  	hcd = usb_create_hcd(&ehci_platform_hc_driver, &dev->dev,
>  			     dev_name(&dev->dev));
> @@ -222,14 +217,13 @@ static int st_ehci_platform_probe(struct platform_device *dev)
>  			goto err_put_clks;
>  	}
>  
> -	hcd->rsrc_start = res_mem->start;
> -	hcd->rsrc_len = resource_size(res_mem);
> -
> -	hcd->regs = devm_ioremap_resource(&dev->dev, res_mem);
> +	hcd->regs = devm_platform_get_and_ioremap_resource(dev, 0, &res_mem);
>  	if (IS_ERR(hcd->regs)) {
>  		err = PTR_ERR(hcd->regs);
>  		goto err_put_clks;
>  	}
> +	hcd->rsrc_start = res_mem->start;
> +	hcd->rsrc_len = resource_size(res_mem);
>  
>  	err = usb_add_hcd(hcd, irq, IRQF_SHARED);
>  	if (err)
Reviewed-by: Patrice Chotard <patrice.chotard@...s.st.com>

Thanks
Patrice