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path: root/drivers/gpu/drm/mgag200/mgag200_mode.c
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Diffstat (limited to 'drivers/gpu/drm/mgag200/mgag200_mode.c')
-rw-r--r--drivers/gpu/drm/mgag200/mgag200_mode.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/mgag200/mgag200_mode.c b/drivers/gpu/drm/mgag200/mgag200_mode.c
index fb71658c3117..6067d08aeee3 100644
--- a/drivers/gpu/drm/mgag200/mgag200_mode.c
+++ b/drivers/gpu/drm/mgag200/mgag200_mode.c
@@ -223,7 +223,7 @@ void mgag200_set_mode_regs(struct mga_device *mdev, const struct drm_display_mod
vsyncstr = mode->crtc_vsync_start - 1;
vsyncend = mode->crtc_vsync_end - 1;
vtotal = mode->crtc_vtotal - 2;
- vblkstr = mode->crtc_vblank_start;
+ vblkstr = mode->crtc_vblank_start - 1;
vblkend = vtotal + 1;
linecomp = vdispend;