linux-kernel - Re: [PATCH] drm/meson: Make use of the helper function devm_platform_ioremap

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Message-ID: <896e4f35-f410-41e8-50ad-ed16c65cab45@baylibre.com>
Date:   Tue, 31 Aug 2021 16:35:43 +0200
From:   Neil Armstrong <narmstrong@...libre.com>
To:     Cai Huoqing <caihuoqing@...du.com>
Cc:     David Airlie <airlied@...ux.ie>, Daniel Vetter <daniel@...ll.ch>,
        Kevin Hilman <khilman@...libre.com>,
        Jerome Brunet <jbrunet@...libre.com>,
        Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
        dri-devel@...ts.freedesktop.org, linux-amlogic@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drm/meson: Make use of the helper function
 devm_platform_ioremap_resourcexxx()

On 31/08/2021 15:56, Cai Huoqing wrote:
> Use the devm_platform_ioremap_resource_byname() helper instead of
> calling platform_get_resource_byname() and devm_ioremap_resource()
> separately
> 
> Use the devm_platform_ioremap_resource() helper instead of
> calling platform_get_resource() and devm_ioremap_resource()
> separately
> 
> Signed-off-by: Cai Huoqing <caihuoqing@...du.com>
> ---
>  drivers/gpu/drm/meson/meson_drv.c     | 3 +--
>  drivers/gpu/drm/meson/meson_dw_hdmi.c | 4 +---
>  2 files changed, 2 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/gpu/drm/meson/meson_drv.c b/drivers/gpu/drm/meson/meson_drv.c
> index bc0d60df04ae..7f41a33592c8 100644
> --- a/drivers/gpu/drm/meson/meson_drv.c
> +++ b/drivers/gpu/drm/meson/meson_drv.c
> @@ -206,8 +206,7 @@ static int meson_drv_bind_master(struct device *dev, bool has_components)
>  	priv->compat = match->compat;
>  	priv->afbcd.ops = match->afbcd_ops;
>  
> -	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "vpu");
> -	regs = devm_ioremap_resource(dev, res);
> +	regs = devm_platform_ioremap_resource_byname(pdev, "vpu");
>  	if (IS_ERR(regs)) {
>  		ret = PTR_ERR(regs);
>  		goto free_drm;
> diff --git a/drivers/gpu/drm/meson/meson_dw_hdmi.c b/drivers/gpu/drm/meson/meson_dw_hdmi.c
> index 2ed87cfdd735..0afbd1e70bfc 100644
> --- a/drivers/gpu/drm/meson/meson_dw_hdmi.c
> +++ b/drivers/gpu/drm/meson/meson_dw_hdmi.c
> @@ -978,7 +978,6 @@ static int meson_dw_hdmi_bind(struct device *dev, struct device *master,
>  	struct dw_hdmi_plat_data *dw_plat_data;
>  	struct drm_bridge *next_bridge;
>  	struct drm_encoder *encoder;
> -	struct resource *res;
>  	int irq;
>  	int ret;
>  
> @@ -1042,8 +1041,7 @@ static int meson_dw_hdmi_bind(struct device *dev, struct device *master,
>  		return PTR_ERR(meson_dw_hdmi->hdmitx_phy);
>  	}
>  
> -	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> -	meson_dw_hdmi->hdmitx = devm_ioremap_resource(dev, res);
> +	meson_dw_hdmi->hdmitx = devm_platform_ioremap_resource(pdev, 0);
>  	if (IS_ERR(meson_dw_hdmi->hdmitx))
>  		return PTR_ERR(meson_dw_hdmi->hdmitx);
>  
> 

Reviewed-by: Neil Armstrong <narmstrong@...libre.com>