diff options
| author | Mika Kuoppala | 2012-12-10 14:41:48 +0100 |
|---|---|---|
| committer | Daniel Vetter | 2012-12-11 13:32:26 +0100 |
| commit | f72b3435c1a75406d82d6e252bb78f009efd4bd9 (patch) | |
| tree | 5b9e854dc74ca4d52374cd6e7e816312c6daca31 /drivers/gpu/drm/i915/i915_gem.c | |
| parent | i915: intel_set_mode: Reduce stack allocation from 500 bytes to 2 pointers (diff) | |
| download | kernel-qcow2-linux-f72b3435c1a75406d82d6e252bb78f009efd4bd9.tar.gz kernel-qcow2-linux-f72b3435c1a75406d82d6e252bb78f009efd4bd9.tar.xz kernel-qcow2-linux-f72b3435c1a75406d82d6e252bb78f009efd4bd9.zip | |
drm/i915: Don't emit semaphore wait if wrap happened
If wrap just happened we need to prevent emitting waits for
pre wrap values. Detect this and emit no-ops instead.
v2: Use olr > seqno to detect wrap instead of *seqno == 0
as suggested by Chris Wilson.
v3: Use last used seqno to detect the wraparound. From
Chris Wilson
v4: Fixed unnecessary last_seqno assigment
References: https://bugs.freedesktop.org/show_bug.cgi?id=57967
Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/i915_gem.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gem.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index e4b233df576f..a81b78a59bd9 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -1969,7 +1969,7 @@ i915_gem_get_seqno(struct drm_device *dev, u32 *seqno) dev_priv->next_seqno = 1; } - *seqno = dev_priv->next_seqno++; + *seqno = dev_priv->last_seqno = dev_priv->next_seqno++; return 0; } |