diff options
| author | Alex Deucher <alexander.deucher@amd.com> | 2013-01-31 15:00:52 +0100 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2013-01-31 15:03:22 +0100 |
| commit | ed39fadd6df01095378e499fac3674883f16b853 (patch) | |
| tree | 82e2bd57b1b961f69a5eae4f877e5afeb63b816d /drivers/gpu | |
| parent | drm/radeon: protect against div by 0 in backend setup (diff) | |
| download | linux-ed39fadd6df01095378e499fac3674883f16b853.tar.xz linux-ed39fadd6df01095378e499fac3674883f16b853.zip | |
drm/radeon/evergreen+: wait for the MC to settle after MC blackout
Some chips seem to need a little delay after blacking out
the MC before the requests actually stop.
May fix:
https://bugs.freedesktop.org/show_bug.cgi?id=56139
https://bugs.freedesktop.org/show_bug.cgi?id=57567
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/radeon/evergreen.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c index 2270867d8551..a2d478e8692a 100644 --- a/drivers/gpu/drm/radeon/evergreen.c +++ b/drivers/gpu/drm/radeon/evergreen.c @@ -1349,6 +1349,8 @@ void evergreen_mc_stop(struct radeon_device *rdev, struct evergreen_mc_save *sav blackout &= ~BLACKOUT_MODE_MASK; WREG32(MC_SHARED_BLACKOUT_CNTL, blackout | 1); } + /* wait for the MC to settle */ + udelay(100); } void evergreen_mc_resume(struct radeon_device *rdev, struct evergreen_mc_save *save) |