Registers in indices below 0x18 are totally unrelated to modesetting, so don't write 0's, or anything else into them on modeset. Most of these registers are hardware cursor related, so this existing code interferes with hardware cursor development.
Signed-off-by: Christopher Harvey charvey@matrox.com Tested-by: Julia Lemire jlemire@matrox.com Acked-by: Julia Lemire jlemire@matrox.com Acked-by: Mathieu Larouche mathieu.larouche@matrox.com --- drivers/gpu/drm/mgag200/mgag200_mode.c | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/mgag200/mgag200_mode.c b/drivers/gpu/drm/mgag200/mgag200_mode.c index f988965..2d9333d 100644 --- a/drivers/gpu/drm/mgag200/mgag200_mode.c +++ b/drivers/gpu/drm/mgag200/mgag200_mode.c @@ -829,11 +829,7 @@ static int mga_crtc_mode_set(struct drm_crtc *crtc,
for (i = 0; i < sizeof(dacvalue); i++) { - if ((i <= 0x03) || - (i == 0x07) || - (i == 0x0b) || - (i == 0x0f) || - ((i >= 0x13) && (i <= 0x17)) || + if ((i <= 0x17) || (i == 0x1b) || (i == 0x1c) || ((i >= 0x1f) && (i <= 0x29)) ||