diff options
| author | Thomas Zimmermann <tzimmermann@suse.de> | 2019-06-13 09:30:37 +0200 |
|---|---|---|
| committer | Thomas Zimmermann <tzimmermann@suse.de> | 2019-06-13 13:37:19 +0200 |
| commit | da460a29c28cac865b74f1ad578cf6fc4b18649f (patch) | |
| tree | 92b292b1821ce0814b62ea684c13daa68ae9c1bc /drivers/gpu/drm/ast | |
| parent | 27072152075e7542fb52a64054fae921b87f9085 (diff) | |
drm/ast: Pin framebuffer BO during dirty update
Another explicit lock operation of a GEM VRAM BO is located in AST's
framebuffer update code. Instead of locking the BO, we pin it to wherever
it is.
v2:
* update with pin flag of 0
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190613073041.29350-6-tzimmermann@suse.de
Diffstat (limited to 'drivers/gpu/drm/ast')
| -rw-r--r-- | drivers/gpu/drm/ast/ast_fb.c | 32 |
1 files changed, 16 insertions, 16 deletions
diff --git a/drivers/gpu/drm/ast/ast_fb.c b/drivers/gpu/drm/ast/ast_fb.c index 5480caecde86..8200b25dad16 100644 --- a/drivers/gpu/drm/ast/ast_fb.c +++ b/drivers/gpu/drm/ast/ast_fb.c @@ -48,30 +48,30 @@ static void ast_dirty_update(struct ast_fbdev *afbdev, int x, int y, int width, int height) { int i; - struct drm_gem_object *obj; struct drm_gem_vram_object *gbo; int src_offset, dst_offset; int bpp = afbdev->afb.base.format->cpp[0]; - int ret = -EBUSY; + int ret; u8 *dst; bool unmap = false; bool store_for_later = false; int x2, y2; unsigned long flags; - obj = afbdev->afb.obj; - gbo = drm_gem_vram_of_gem(obj); - - /* Try to lock the BO. If we fail with -EBUSY then - * the BO is being moved and we should store up the - * damage until later. - */ - if (drm_can_sleep()) - ret = drm_gem_vram_lock(gbo, true); - if (ret) { - if (ret != -EBUSY) - return; - + gbo = drm_gem_vram_of_gem(afbdev->afb.obj); + + if (drm_can_sleep()) { + /* We pin the BO so it won't be moved during the + * update. The actual location, video RAM or system + * memory, is not important. + */ + ret = drm_gem_vram_pin(gbo, 0); + if (ret) { + if (ret != -EBUSY) + return; + store_for_later = true; + } + } else { store_for_later = true; } @@ -126,7 +126,7 @@ static void ast_dirty_update(struct ast_fbdev *afbdev, drm_gem_vram_kunmap(gbo); out: - drm_gem_vram_unlock(gbo); + drm_gem_vram_unpin(gbo); } static void ast_fillrect(struct fb_info *info, |