[PATCH v4 10/14] drm/panic: Restrict to primary planes
From: Thomas Zimmermann <tzimmermann@suse.de>
Date: 2026-09-09 08:59:59
Also in:
amd-gfx, dri-devel, imx, intel-gfx, intel-xe, linux-arm-kernel, linux-doc, linux-renesas-soc, nouveau, rust-for-linux, sashiko-reviews, virtualization
Subsystem:
drm drivers, drm drivers and misc gpu patches, drm panic, the rest · Maintainers:
David Airlie, Simona Vetter, Maarten Lankhorst, Maxime Ripard, Thomas Zimmermann, Jocelyn Falempe, Javier Martinez Canillas, Linus Torvalds
Restrict panic handling to primary displays. Overlays and cursors should not display panic output. If there are exceptions, they can be registered by the driver itself. v3: - also update drm_panic_is_enabled() (Sashiko) - still do some testing when unregistering (Sashiko) Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com> --- drivers/gpu/drm/drm_panic.c | 14 +++++++++++--- 1 file changed, 11 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/drm_panic.c b/drivers/gpu/drm/drm_panic.c
index 809d51ad78a8..522ea990a2e9 100644
--- a/drivers/gpu/drm/drm_panic.c
+++ b/drivers/gpu/drm/drm_panic.c@@ -1059,9 +1059,13 @@ bool drm_panic_is_enabled(struct drm_device *dev) if (!dev->mode_config.num_total_plane) return false; - drm_for_each_plane(plane, dev) - if (plane->helper_private && plane->helper_private->get_scanout_buffer) - return true; + drm_for_each_plane(plane, dev) { + if (plane->type != DRM_PLANE_TYPE_PRIMARY) + continue; + if (!plane->helper_private || !plane->helper_private->get_scanout_buffer) + continue; + return true; + } return false; } EXPORT_SYMBOL(drm_panic_is_enabled);
@@ -1079,6 +1083,8 @@ void drm_panic_register(struct drm_device *dev) return; drm_for_each_plane(plane, dev) { + if (plane->type != DRM_PLANE_TYPE_PRIMARY) + continue; if (!plane->helper_private || !plane->helper_private->get_scanout_buffer) continue; plane->kmsg_panic.dump = drm_panic;
@@ -1106,6 +1112,8 @@ void drm_panic_unregister(struct drm_device *dev) return; drm_for_each_plane(plane, dev) { + if (plane->type != DRM_PLANE_TYPE_PRIMARY) + continue; if (!plane->helper_private || !plane->helper_private->get_scanout_buffer) continue; kmsg_dump_unregister(&plane->kmsg_panic);
--
2.55.0