Re: [PATCH v4 11/14] drm/panic: Display panic screen via per-plane callback
From: sashiko-bot@kernel.org
Date: 2026-09-09 09:29:11
Also in:
dri-devel, intel-gfx, intel-xe, linux-hyperv, virtualization
Add display_panic_screen to struct drm_plane_funcs. If set on a plane, register a panic handler for the plane from the DRM core's panic handling. Invoke this helper from the core to display a panic screen. The new callback replaces get_scanout_buffer as signal for panic support in a plane. Using get_scanout_buffer is now merely a detail of the implementation. This will also free struct drm_scanout_buffer for use cases besides panic handling. With display_panic_screen in place, rename draw_panic_plane() to drm_plane_helper_display_panic_screen() and make it available to DRM drivers via drm_panic_helper.h. Do not change the implementation or functionality of this code. drm_plane_helper_display_panic_screen() still supports kernel messages, user messages and QR codes on various color formats. [ ... ] - only consider planes with get_scanout_buffer (Sashiko) - set callback for planes create with drm_crtc_init() (Sashiko) - return errno code from display_panic_screen Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Sashiko has reviewed this patch and found no issues. It looks great! -- Sashiko AI review · https://sashiko.dev/#/patchset/20260909085826.64529-1-tzimmermann@suse.de?part=11