summaryrefslogtreecommitdiff
path: root/drivers/gpu/drm/radeon/atombios_encoders.c
diff options
context:
space:
mode:
authorAl Viro <viro@zeniv.linux.org.uk>2016-05-11 00:00:29 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2016-05-11 00:00:29 -0400
commite4d35be584be88a3db3fa5635a97c62a2ec5aafe (patch)
treefc22a7fb65697306edd71411959ccee6df60c64d /drivers/gpu/drm/radeon/atombios_encoders.c
parent99d825822eade8d827a1817357cbf3f889a552d6 (diff)
parent38b78a5f18584db6fa7441e0f4531b283b0e6725 (diff)
Merge branch 'ovl-fixes' into for-linus
Diffstat (limited to 'drivers/gpu/drm/radeon/atombios_encoders.c')
-rw-r--r--drivers/gpu/drm/radeon/atombios_encoders.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/atombios_encoders.c b/drivers/gpu/drm/radeon/atombios_encoders.c
index edd05cdb0cd8..587cae4e73c9 100644
--- a/drivers/gpu/drm/radeon/atombios_encoders.c
+++ b/drivers/gpu/drm/radeon/atombios_encoders.c
@@ -310,6 +310,10 @@ static bool radeon_atom_mode_fixup(struct drm_encoder *encoder,
&& (mode->crtc_vsync_start < (mode->crtc_vdisplay + 2)))
adjusted_mode->crtc_vsync_start = adjusted_mode->crtc_vdisplay + 2;
+ /* vertical FP must be at least 1 */
+ if (mode->crtc_vsync_start == mode->crtc_vdisplay)
+ adjusted_mode->crtc_vsync_start++;
+
/* get the native mode for scaling */
if (radeon_encoder->active_device & (ATOM_DEVICE_LCD_SUPPORT)) {
radeon_panel_mode_fixup(encoder, adjusted_mode);