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drm/radeon: fix CP semaphores on CIK

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The CP semaphore queue on CIK has a bug that triggers if uncompleted
waits use the same address while a signal is still pending. Work around
this by using different addresses for each sync.

Signed-off-by: Christian König <christian.koenig@amd.com>
Cc: stable@vger.kernel.org
This commit is contained in:
Christian König
2014-02-18 01:50:22 -07:00
parent d02f8575f1
commit 1c61eae469
3 changed files with 20 additions and 5 deletions
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2
drivers/gpu/drm/radeon/radeon_ring.c
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@@ -139,7 +139,7 @@ int radeon_ib_schedule(struct radeon_device *rdev, struct radeon_ib *ib,
}
/* 64 dwords should be enough for fence too */
r = radeon_ring_lock(rdev, ring, 64 + RADEON_NUM_RINGS * 8);
r = radeon_ring_lock(rdev, ring, 64 + RADEON_NUM_SYNCS * 8);
if (r) {
dev_err(rdev->dev, "scheduling IB failed (%d).\n", r);
return r;