drm/radeon: don't allow runpm=1 on systems with out ATPX
authorAlex Deucher <alexdeucher@gmail.com>
Tue, 15 Apr 2014 16:44:35 +0000 (12:44 -0400)
committerChristian König <christian.koenig@amd.com>
Tue, 22 Apr 2014 14:51:21 +0000 (16:51 +0200)
commit73acacc7397fe854ed2ab75f1c940fa00faaf15e
tree04248fb6a3b781caa30e242a8e123cd70ef53651
parente9a4099a59cc598a44006059dd775c25e422b772
drm/radeon: don't allow runpm=1 on systems with out ATPX

vgaswitcheroo and the ATPX ACPI methods are required to
power down the dGPU.

bug:
https://bugzilla.kernel.org/show_bug.cgi?id=73901

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
drivers/gpu/drm/radeon/radeon_kms.c