commit f90ebd9e98f366c41773ad8d0482dade668f5103
author Jason Wessel <jason.wessel@windriver.com> Thu Aug 05 09:22:32 2010 -0500
committer Jason Wessel <jason.wessel@windriver.com> Thu Aug 05 09:22:32 2010 -0500
tree fdc206571a96b405f64e1b211205d7861e5ba544
parent c924b934d0cd14a4559611da91f28f59acebe32a

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>