From f90ebd9e98f366c41773ad8d0482dade668f5103 Mon Sep 17 00:00:00 2001 From: Jason Wessel <jason.wessel@windriver.com> Date: Thu, 5 Aug 2010 09:22:32 -0500 Subject: [PATCH] drm_fb_helper: Preserve capability to use atomic kms Commit 5349ef3127c77075ff70b2014f17ae0fbcaaf199 (drm/fb: fix FBIOGET/PUT_VSCREENINFO pixel clock handling) changed the logic of when a pixclock was valid vs invalid. The atomic kernel mode setting used by the kernel debugger relies upon the drm_fb_helper_check_var() to always return -EINVAL. Until a better solution exists, this behavior will be restored. CC: David Airlie <airlied@linux.ie> CC: Jesse Barnes <jbarnes@virtuousgeek.org> CC: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Jason Wessel <jason.wessel@windriver.com> --- drivers/gpu/drm/drm_fb_helper.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c index 6245add3768a..de82e201d682 100644 --- a/drivers/gpu/drm/drm_fb_helper.c +++ b/drivers/gpu/drm/drm_fb_helper.c @@ -685,7 +685,7 @@ int drm_fb_helper_check_var(struct fb_var_screeninfo *var, struct drm_framebuffer *fb = fb_helper->fb; int depth; - if (var->pixclock != 0) + if (var->pixclock != 0 || in_dbg_master()) return -EINVAL; /* Need to resize the fb object !!! */