drm/mgag200: Set cursor scanout address to correct BO
The hardware requires the correct memory address of the buffer. Currently the same BO's address is programmed unconditionally, so only every second cursor update actually becomes visible. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Acked-by: Sam Ravnborg <sam@ravnborg.org> Fixes: 94dc57b1 ("drm/mgag200: Rewrite cursor handling") Cc: Gerd Hoffmann <kraxel@redhat.com> Cc: Dave Airlie <airlied@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20190723075425.24028-3-tzimmermann@suse.de
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