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drm/radeon: always program the MC on startup

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For r6xx+ asics.  This mirrors the behavior of pre-r6xx
asics.  We need to program the MC even if something
else in startup() fails.  Failure to do so results in
an unusable GPU.

Based on a fix from: Mark Kettenis <kettenis@openbsd.org>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
This commit is contained in:
Alex Deucher
2013-08-04 12:13:17 -04:00
parent 1518dd8efd
commit 6fab3febf6
6 changed files with 12 additions and 6 deletions
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3
drivers/gpu/drm/radeon/ni.c
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@@ -2079,6 +2079,8 @@ static int cayman_startup(struct radeon_device *rdev)
/* enable aspm */
evergreen_program_aspm(rdev);
evergreen_mc_program(rdev);
if (rdev->flags & RADEON_IS_IGP) {
if (!rdev->me_fw || !rdev->pfp_fw || !rdev->rlc_fw) {
r = ni_init_microcode(rdev);
@@ -2107,7 +2109,6 @@ static int cayman_startup(struct radeon_device *rdev)
if (r)
return r;
evergreen_mc_program(rdev);
r = cayman_pcie_gart_enable(rdev);
if (r)
return r;