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

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Date: Thu, 22 Feb 2024 19:14:20 +0100
From: Maxime Ripard <mripard@...nel.org>
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>, Jernej Skrabec <jernej.skrabec@...il.com>, 
 Samuel Holland <samuel@...lland.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: [PATCH v7 34/36] drm/sun4i: hdmi: Switch to container_of_const

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>
---
 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)

-- 
2.43.2