diff options
author | Takashi Iwai <tiwai@suse.de> | 2016-04-27 17:30:49 +0200 |
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committer | Takashi Iwai <tiwai@suse.de> | 2016-04-27 17:30:49 +0200 |
commit | af9cc93c0dee5fc1f9fa32cd9d79a456738a21be (patch) | |
tree | 91aed45708ad9782de42560ecd25ea5f740dae9b /drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c | |
parent | bb03ed216370cb021f377f923471e56d1de3ff5d (diff) | |
parent | 8c0f55100478649e3c0133684aa4aebab77ce10f (diff) |
Merge tag 'asoc-fix-v4.6-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus
ASoC: Fixes for v4.6
This is a fairly large collection of fixes but almost all driver
specific ones, especially to the new Intel drivers which have had a lot
of recent development. The one core fix is a change to the debugfs code
to avoid crashes in some relatively unusual configurations.
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c')
-rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c index 4303b447efe8..d81f1f4883a6 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c @@ -121,7 +121,7 @@ int amdgpu_fence_emit(struct amdgpu_ring *ring, struct fence **f) { struct amdgpu_device *adev = ring->adev; struct amdgpu_fence *fence; - struct fence **ptr; + struct fence *old, **ptr; uint32_t seq; fence = kmem_cache_alloc(amdgpu_fence_slab, GFP_KERNEL); @@ -141,7 +141,11 @@ int amdgpu_fence_emit(struct amdgpu_ring *ring, struct fence **f) /* This function can't be called concurrently anyway, otherwise * emitting the fence would mess up the hardware ring buffer. */ - BUG_ON(rcu_dereference_protected(*ptr, 1)); + old = rcu_dereference_protected(*ptr, 1); + if (old && !fence_is_signaled(old)) { + DRM_INFO("rcu slot is busy\n"); + fence_wait(old, false); + } rcu_assign_pointer(*ptr, fence_get(&fence->base)); |