linux-kernel - Re: [PATCH v7 34/36] drm/sun4i: hdmi: Switch to container_of

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Message-ID: <2172115.irdbgypaU6@jernej-laptop>
Date: Thu, 22 Feb 2024 20:08:58 +0100
From: Jernej Škrabec <jernej.skrabec@...il.com>
To: Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
 Thomas Zimmermann <tzimmermann@...e.de>, David Airlie <airlied@...il.com>,
 Daniel Vetter <daniel@...ll.ch>, Jonathan Corbet <corbet@....net>,
 Sandy Huang <hjc@...k-chips.com>,
 Heiko Stübner <heiko@...ech.de>,
 Chen-Yu Tsai <wens@...e.org>, Samuel Holland <samuel@...lland.org>,
 Maxime Ripard <mripard@...nel.org>
Cc: Hans Verkuil <hverkuil@...all.nl>,
 Sebastian Wick <sebastian.wick@...hat.com>,
 Ville Syrjälä <ville.syrjala@...ux.intel.com>,
 dri-devel@...ts.freedesktop.org, linux-arm-kernel@...ts.infradead.org,
 linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
 linux-media@...r.kernel.org, linux-rockchip@...ts.infradead.org,
 linux-sunxi@...ts.linux.dev, Maxime Ripard <mripard@...nel.org>,
 Sui Jingfeng <sui.jingfeng@...ux.dev>
Subject: Re: [PATCH v7 34/36] drm/sun4i: hdmi: Switch to container_of_const

Dne četrtek, 22. februar 2024 ob 19:14:20 CET je Maxime Ripard napisal(a):
> container_of_const() allows to preserve the pointer constness and is
> thus more flexible than inline functions.
> 
> Let's switch all our instances of container_of() to container_of_const().
> 
> Reviewed-by: Sui Jingfeng <sui.jingfeng@...ux.dev>
> Signed-off-by: Maxime Ripard <mripard@...nel.org>

Reviewed-by: Jernej Skrabec <jernej.skrabec@...il.com>

Best regards,
Jernej

> ---
>  drivers/gpu/drm/sun4i/sun4i_hdmi_enc.c | 16 ++++------------
>  1 file changed, 4 insertions(+), 12 deletions(-)
> 
> diff --git a/drivers/gpu/drm/sun4i/sun4i_hdmi_enc.c b/drivers/gpu/drm/sun4i/sun4i_hdmi_enc.c
> index bae69d696765..c276d984da6b 100644
> --- a/drivers/gpu/drm/sun4i/sun4i_hdmi_enc.c
> +++ b/drivers/gpu/drm/sun4i/sun4i_hdmi_enc.c
> @@ -30,19 +30,11 @@
>  #include "sun4i_drv.h"
>  #include "sun4i_hdmi.h"
>  
> -static inline struct sun4i_hdmi *
> -drm_encoder_to_sun4i_hdmi(struct drm_encoder *encoder)
> -{
> -	return container_of(encoder, struct sun4i_hdmi,
> -			    encoder);
> -}
> +#define drm_encoder_to_sun4i_hdmi(e)		\
> +	container_of_const(e, struct sun4i_hdmi, encoder)
>  
> -static inline struct sun4i_hdmi *
> -drm_connector_to_sun4i_hdmi(struct drm_connector *connector)
> -{
> -	return container_of(connector, struct sun4i_hdmi,
> -			    connector);
> -}
> +#define drm_connector_to_sun4i_hdmi(c)		\
> +	container_of_const(c, struct sun4i_hdmi, connector)
>  
>  static int sun4i_hdmi_setup_avi_infoframes(struct sun4i_hdmi *hdmi,
>  					   struct drm_display_mode *mode)
> 
>