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authorBen Skeggs <bskeggs@redhat.com>2019-12-10 05:15:44 +0300
committerBen Skeggs <bskeggs@redhat.com>2019-12-10 14:34:52 +0300
commit3d1890ef8023e61934e070021b06cc9f417260c0 (patch)
treeee37baca65101077919e4afe54497304362de0ac /drivers
parentae5769d4670982bc483885b120b557a9ffd57527 (diff)
downloadlinux-3d1890ef8023e61934e070021b06cc9f417260c0.tar.xz
drm/nouveau/kms/nv50-: fix panel scaling
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>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/gpu/drm/nouveau/dispnv50/disp.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/gpu/drm/nouveau/dispnv50/disp.c b/drivers/gpu/drm/nouveau/dispnv50/disp.c
index 9ac47fe519f8..63425e246018 100644
--- a/drivers/gpu/drm/nouveau/dispnv50/disp.c
+++ b/drivers/gpu/drm/nouveau/dispnv50/disp.c
@@ -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;