From 5ed24569031aa0aa0d86286580de64269a96581a Mon Sep 17 00:00:00 2001 From: Christopher Harvey Date: Fri, 12 Apr 2013 20:42:19 +0000 Subject: [PATCH] drm/mgag200: Don't change unrelated registers during modeset 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 Tested-by: Julia Lemire Acked-by: Julia Lemire Acked-by: Mathieu Larouche Signed-off-by: Dave Airlie --- 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 7337013a4a0e6..2affe7af6cbb0 100644 --- a/drivers/gpu/drm/mgag200/mgag200_mode.c +++ b/drivers/gpu/drm/mgag200/mgag200_mode.c @@ -832,11 +832,7 @@ 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)) || -- 2.39.5