diff options
| author | Alex Deucher <alexander.deucher@amd.com> | 2013-02-28 10:03:08 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2013-03-07 12:58:58 -0500 |
| commit | d808fc882928bfe3cab87dd960ca28715e461ce4 (patch) | |
| tree | 5fefdb74efbb7c4e235a315b8dbc453ed0110f95 /drivers/gpu/drm/radeon/evergreen.c | |
| parent | e8fc41377f5037ff7a661ea06adc05f1daec1548 (diff) | |
drm/radeon: skip MC reset as it's probably not hung
The MC is mostly likely busy (e.g., display requests), not hung
so no need to reset it. Doing an MC reset is tricky and not
particularly reliable. Fixes hangs in certain cases.
Reported-by: Josh Boyer <jwboyer@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/radeon/evergreen.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/evergreen.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c index 3c38ea46531c..305a657bf215 100644 --- a/drivers/gpu/drm/radeon/evergreen.c +++ b/drivers/gpu/drm/radeon/evergreen.c @@ -2438,6 +2438,12 @@ static u32 evergreen_gpu_check_soft_reset(struct radeon_device *rdev) if (tmp & L2_BUSY) reset_mask |= RADEON_RESET_VMC; + /* Skip MC reset as it's mostly likely not hung, just busy */ + if (reset_mask & RADEON_RESET_MC) { + DRM_DEBUG("MC busy: 0x%08X, clearing.\n", reset_mask); + reset_mask &= ~RADEON_RESET_MC; + } + return reset_mask; } |