iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

drm/nouveau/kms/nv50-: fix panel scaling

Browse Source 
[ Upstream commit 3d1890ef8023e61934e070021b06cc9f417260c0 ]

Under certain circumstances, encoder atomic_check() can be entered
without adjusted_mode having been reset to the same as mode, which
confuses the scaling logic and can lead to a misprogrammed display.

Fix this by checking against the user-provided mode directly.

Link: https://bugs.freedesktop.org/show_bug.cgi?id=108615
Link: https://gitlab.freedesktop.org/xorg/driver/xf86-video-nouveau/issues/464
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Ben Skeggs 2019-12-10 12:15:44 +10:00 committed by Greg Kroah-Hartman
parent bcfa071bfe
commit 0f7cb06912
1 changed files with 3 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/gpu/drm/nouveau/dispnv50/disp.c
View File

@ -326,9 +326,9 @@ nv50_outp_atomic_check_view(struct drm_encoder *encoder,
* same size as the native one (e.g. different
* refresh rate)
*/
if (adjusted_mode->hdisplay == native_mode->hdisplay &&
adjusted_mode->vdisplay == native_mode->vdisplay &&
adjusted_mode->type & DRM_MODE_TYPE_DRIVER)
if (mode->hdisplay == native_mode->hdisplay &&
mode->vdisplay == native_mode->vdisplay &&
mode->type & DRM_MODE_TYPE_DRIVER)
break;
mode = native_mode;
asyc->scaler.full = true;