linux-kernel - [PATCH drm-misc 1/3] drm/dp: constify the struct device

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Message-Id: <20240219-device_cleanup-drm-v1-1-e2f2acb38bff@marliere.net>
Date: Mon, 19 Feb 2024 09:00:51 -0300
From: "Ricardo B. Marliere" <ricardo@...liere.net>
To: Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, 
 Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>, 
 David Airlie <airlied@...il.com>, Daniel Vetter <daniel@...ll.ch>, 
 Hans de Goede <hdegoede@...hat.com>
Cc: dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org, 
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
 "Ricardo B. Marliere" <ricardo@...liere.net>
Subject: [PATCH drm-misc 1/3] drm/dp: constify the struct device_type usage

Since commit aed65af1cc2f ("drivers: make device_type const"), the driver
core can properly handle constant struct device_type. Move the
dp_aux_device_type_type variable to be a constant structure as well,
placing it into read-only memory which can not be modified at runtime.

Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Signed-off-by: Ricardo B. Marliere <ricardo@...liere.net>
---
 drivers/gpu/drm/display/drm_dp_aux_bus.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/display/drm_dp_aux_bus.c b/drivers/gpu/drm/display/drm_dp_aux_bus.c
index 5afc26be9d2a..f4c66937ef79 100644
--- a/drivers/gpu/drm/display/drm_dp_aux_bus.c
+++ b/drivers/gpu/drm/display/drm_dp_aux_bus.c
@@ -166,7 +166,7 @@ static int dp_aux_ep_dev_modalias(const struct device *dev, struct kobj_uevent_e
 	return of_device_uevent_modalias(dev, env);
 }

-static struct device_type dp_aux_device_type_type = {
+static const struct device_type dp_aux_device_type_type = {
 	.groups		= dp_aux_ep_dev_groups,
 	.uevent		= dp_aux_ep_dev_modalias,
 	.release	= dp_aux_ep_dev_release,

-- 
2.43.0