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| author |   Naresh Kumar Kachhi <naresh.kumar.kachhi@intel.com> | 2014-03-12 16:39:41 +0530 |
|---|---|---|
| committer |   Daniel Vetter <daniel.vetter@ffwll.ch> | 2014-03-12 16:04:19 +0100 |
| commit | e9fea5747d2b3dbff47a8790c1cc4d7af80051d6 (patch) | |
| tree | d6292f9a6b121589682365bfc24c5dcd368f7f05 /drivers/gpu/drm/i915/intel_ringbuffer.c | |
| parent | drm/i915: disable rings before HW status page setup (diff) | |
| download | linux-dev-e9fea5747d2b3dbff47a8790c1cc4d7af80051d6.tar.xz linux-dev-e9fea5747d2b3dbff47a8790c1cc4d7af80051d6.zip | |
drm/i915: wait for rings to become idle once disabled
make sure we wait for rings to become idle once they are
disabled. In case of timeout print an error message
Signed-off-by: Naresh Kumar Kachhi <naresh.kumar.kachhi@intel.com>
[danvet: Frob patch as suggested by Chris.]
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_ringbuffer.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_ringbuffer.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c index 42b400144379..617634b6a6c2 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.c +++ b/drivers/gpu/drm/i915/intel_ringbuffer.c @@ -444,6 +444,8 @@ static int init_ring_common(struct intel_ring_buffer *ring) I915_WRITE_CTL(ring, 0); I915_WRITE_HEAD(ring, 0); ring->write_tail(ring, 0); + if (wait_for_atomic((I915_READ_MODE(ring) & MODE_IDLE) != 0, 1000)) + DRM_ERROR("%s :timed out trying to stop ring\n", ring->name); if (I915_NEED_GFX_HWS(dev)) intel_ring_setup_status_page(ring); |