linux-kernel - [PATCH v10 01/10] drm/panic: Add a private field to struct drm_scanout

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Message-ID: <20250618094011.238154-2-jfalempe@redhat.com>
Date: Wed, 18 Jun 2025 11:31:19 +0200
From: Jocelyn Falempe <jfalempe@...hat.com>
To: Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
	Jani Nikula <jani.nikula@...ux.intel.com>,
	Rodrigo Vivi <rodrigo.vivi@...el.com>,
	Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
	Tvrtko Ursulin <tursulin@...ulin.net>,
	Ville Syrjälä <ville.syrjala@...ux.intel.com>,
	David Airlie <airlied@...il.com>,
	Simona Vetter <simona@...ll.ch>,
	Christian Koenig <christian.koenig@....com>,
	Huang Rui <ray.huang@....com>,
	Matthew Auld <matthew.auld@...el.com>,
	Matthew Brost <matthew.brost@...el.com>,
	Maxime Ripard <mripard@...nel.org>,
	Thomas Zimmermann <tzimmermann@...e.de>,
	intel-gfx@...ts.freedesktop.org,
	intel-xe@...ts.freedesktop.org,
	dri-devel@...ts.freedesktop.org,
	linux-kernel@...r.kernel.org
Cc: Jocelyn Falempe <jfalempe@...hat.com>
Subject: [PATCH v10 01/10] drm/panic: Add a private field to struct drm_scanout_buffer

This allows driver to set some private data in get_scanout_buffer(),
and re-use them in set_pixel() callback.

Signed-off-by: Jocelyn Falempe <jfalempe@...hat.com>
---

v10:
 * Added in v10, to avoid static variables

 include/drm/drm_panic.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/include/drm/drm_panic.h b/include/drm/drm_panic.h
index 310c88c4d336..ac0e46b73436 100644
--- a/include/drm/drm_panic.h
+++ b/include/drm/drm_panic.h
@@ -72,6 +72,12 @@ struct drm_scanout_buffer {
 	void (*set_pixel)(struct drm_scanout_buffer *sb, unsigned int x,
 			  unsigned int y, u32 color);
 
+	/**
+	 * @private: private pointer that you can use in the callbacks
+	 * set_pixel()
+	 */
+	void *private;
+
 };
 
 #ifdef CONFIG_DRM_PANIC
-- 
2.49.0