From 7ab876703dcbe852652db6441f0aadb3d6b75e94 Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Thu, 1 Mar 2007 18:29:14 -0800 Subject: [PATCH] [RADEON]: Fix blanking return value. If you'll recall, over a year ago, I pointed out that the current Radeon driver erroneously returns -EINVAL for valid blanking codes, here is a link to that thread: http://lkml.org/lkml/2006/1/28/6 No other driver does this, and it confuses the X server into thinking that the device does not support blanking properly. I looked again and there is simply no reason for the Radeon driver to return -EINVAL for FB_BLANK_NORMAL. It claims it wants to do this in order to convince fbcon to blank in software, right here: if (fb_blank(info, blank)) fbcon_generic_blank(vc, info, blank); to software blank the screen. But it only causes that to happen in the FB_BLANK_NORMAL case. That makes no sense because the Radeon code does this: val |= CRTC_DISPLAY_DIS; in the FB_BLANK_NORMAL case so should be blanking the hardware, and there is therefore no reason to SW blank by returning -EINVAL. Signed-off-by: David S. Miller Acked-by: Antonino Daplas --- drivers/video/aty/radeon_base.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/video/aty/radeon_base.c b/drivers/video/aty/radeon_base.c index 7e228aded4c2..46ba1235f03a 100644 --- a/drivers/video/aty/radeon_base.c +++ b/drivers/video/aty/radeon_base.c @@ -1026,8 +1026,7 @@ int radeon_screen_blank(struct radeonfb_info *rinfo, int blank, int mode_switch) break; } - /* let fbcon do a soft blank for us */ - return (blank == FB_BLANK_NORMAL) ? -EINVAL : 0; + return 0; } static int radeonfb_blank (int blank, struct fb_info *info) -- GitLab