User framebuffers are created with either bo->pages or bo->vaddr set,
depending on whether or not an IOMMU is present. On the other hand, the
framebuffer created for fbdev emulation has a vaddr mapping made if
bo->pages is set after creation. This is set up in fbdev probe.
Remove the special case unmapping from the general-purpose framebuffer
destroy, and move it to fbdev teardown.
Signed-off-by: Daniel Stone <daniels@xxxxxxxxxxxxx>
Cc: Thierry Reding <thierry.reding@xxxxxxxxx>
Cc: linux-tegra@xxxxxxxxxxxxxxx
---
drivers/gpu/drm/tegra/fb.c | 17 +++++++++++------
1 file changed, 11 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/tegra/fb.c b/drivers/gpu/drm/tegra/fb.c
index 57da9683a713..709aa6ef171a 100644
--- a/drivers/gpu/drm/tegra/fb.c
+++ b/drivers/gpu/drm/tegra/fb.c
@@ -99,12 +99,8 @@ static void tegra_fb_destroy(struct drm_framebuffer *framebuffer)
for (i = 0; i < framebuffer->format->num_planes; i++) {
struct tegra_bo *bo = tegra_fb_get_plane(framebuffer, i);
- if (bo) {
- if (bo->pages)
- vunmap(bo->vaddr);
-
+ if (bo)
drm_gem_object_put_unlocked(&bo->gem);
- }
}
drm_framebuffer_cleanup(framebuffer);
@@ -369,8 +365,17 @@ static void tegra_fbdev_exit(struct tegra_fbdev *fbdev)
{
drm_fb_helper_unregister_fbi(&fbdev->base);
- if (fbdev->fb)
+ if (fbdev->fb) {
+ struct tegra_bo *bo = tegra_fb_get_plane(fbdev->fb, 0);
+
+ /* Undo the special mapping we made in fbdev probe. */
+ if (bo && bo->pages) {
+ vunmap(bo->vaddr);
+ bo->vaddr = 0;
+ }
+
drm_framebuffer_remove(fbdev->fb);
+ }
drm_fb_helper_fini(&fbdev->base);
tegra_fbdev_free(fbdev);
--
2.16.2
--
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