From e3ddd2d25533d1cc6f9fea421e4a5f16b60b3434 Mon Sep 17 00:00:00 2001 From: Thomas Zimmermann Date: Fri, 18 Nov 2022 14:35:35 +0100 Subject: [PATCH] Revert "drm/fb-helper: Perform damage handling in deferred-I/O helper" This reverts commit 5fc586a058babc71c82a038477581b7bfe1c6e2a. Needed to restore the fbdev damage worker. There have been bug reports about locking order [1] and incorrectly takens branches. [2] Restore the damage worker until these problems have been resovled. Signed-off-by: Thomas Zimmermann Acked-by: Daniel Vetter Link: https://intel-gfx-ci.01.org/tree/drm-tip/fi-kbl-8809g.html # 1 Link: https://lore.kernel.org/dri-devel/20221115115819.23088-6-tzimmermann@suse.de/T/#m06eedc0a468940e4cbbd14ca026733b639bc445a # 2 Link: https://patchwork.freedesktop.org/patch/msgid/20221118133535.9739-4-tzimmermann@suse.de --- drivers/gpu/drm/drm_fb_helper.c | 12 +++--------- 1 file changed, 3 insertions(+), 9 deletions(-) diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c index cdbf03e..b3a731b 100644 --- a/drivers/gpu/drm/drm_fb_helper.c +++ b/drivers/gpu/drm/drm_fb_helper.c @@ -666,16 +666,10 @@ void drm_fb_helper_deferred_io(struct fb_info *info, struct list_head *pagerefli if (min_off < max_off) { drm_fb_helper_memory_range_to_clip(info, min_off, max_off - min_off, &damage_area); - drm_fb_helper_add_damage_clip(helper, damage_area.x1, damage_area.y1, - drm_rect_width(&damage_area), - drm_rect_height(&damage_area)); + drm_fb_helper_damage(helper, damage_area.x1, damage_area.y1, + drm_rect_width(&damage_area), + drm_rect_height(&damage_area)); } - - /* - * Flushes all dirty pages from mmap's pageref list and the - * areas that have been written by struct fb_ops callbacks. - */ - drm_fb_helper_fb_dirty(helper); } EXPORT_SYMBOL(drm_fb_helper_deferred_io); -- 2.7.4