diff options
Diffstat (limited to 'drivers/gpu/drm/mgag200/mgag200_fb.c')
| -rw-r--r-- | drivers/gpu/drm/mgag200/mgag200_fb.c | 31 |
1 files changed, 15 insertions, 16 deletions
diff --git a/drivers/gpu/drm/mgag200/mgag200_fb.c b/drivers/gpu/drm/mgag200/mgag200_fb.c index 97c575a9a86f..8adb33228732 100644 --- a/drivers/gpu/drm/mgag200/mgag200_fb.c +++ b/drivers/gpu/drm/mgag200/mgag200_fb.c @@ -1,11 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Copyright 2010 Matt Turner. * Copyright 2012 Red Hat * - * This file is subject to the terms and conditions of the GNU General - * Public License version 2. See the file COPYING in the main - * directory of this archive for more details. - * * Authors: Matthew Garrett * Matt Turner * Dave Airlie @@ -26,7 +23,7 @@ static void mga_dirty_update(struct mga_fbdev *mfbdev, struct drm_gem_vram_object *gbo; int src_offset, dst_offset; int bpp = mfbdev->mfb.base.format->cpp[0]; - int ret = -EBUSY; + int ret; u8 *dst; bool unmap = false; bool store_for_later = false; @@ -36,16 +33,18 @@ static void mga_dirty_update(struct mga_fbdev *mfbdev, obj = mfbdev->mfb.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; - + 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; } @@ -100,7 +99,7 @@ static void mga_dirty_update(struct mga_fbdev *mfbdev, drm_gem_vram_kunmap(gbo); out: - drm_gem_vram_unlock(gbo); + drm_gem_vram_unpin(gbo); } static void mga_fillrect(struct fb_info *info, |