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76c332d119
Fix an off-by-one error when setting the vblanking start in <VBLKSTR>. Commitd6460bd52c("drm/mgag200: Add dedicated variables for blanking fields") switched the value from crtc_vdisplay to crtc_vblank_start, which DRM helpers copy from the former. The commit missed to subtract one though. Reported-by: Wakko Warner <wakko@animx.eu.org> Closes: https://lore.kernel.org/dri-devel/CAMwc25rKPKooaSp85zDq2eh-9q4UPZD=RqSDBRp1fAagDnmRmA@mail.gmail.com/ Reported-by: Сергей <afmerlord@gmail.com> Closes: https://lore.kernel.org/all/5b193b75-40b1-4342-a16a-ae9fc62f245a@gmail.com/ Closes: https://bbs.archlinux.org/viewtopic.php?id=303819 Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Fixes:d6460bd52c("drm/mgag200: Add dedicated variables for blanking fields") Cc: Thomas Zimmermann <tzimmermann@suse.de> Cc: Jocelyn Falempe <jfalempe@redhat.com> Cc: Dave Airlie <airlied@redhat.com> Cc: dri-devel@lists.freedesktop.org Cc: <stable@vger.kernel.org> # v6.12+ Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com> Tested-by: Wakko Warner <wakko@animx.eu.org> Link: https://lore.kernel.org/r/20250416083847.51764-1-tzimmermann@suse.de