And drop it when we detach. If the shared buffer is in vram, we need to make sure we don't put the device into runtime suspend. Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx> --- drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c index 5b465ab774d1..f63f182f37f9 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c @@ -40,6 +40,7 @@ #include <linux/dma-buf.h> #include <linux/dma-fence-array.h> #include <linux/pci-p2pdma.h> +#include <linux/pm_runtime.h> /** * amdgpu_gem_prime_vmap - &dma_buf_ops.vmap implementation @@ -187,9 +188,13 @@ static int amdgpu_dma_buf_attach(struct dma_buf *dmabuf, if (attach->dev->driver == adev->dev->driver) return 0; + r = pm_runtime_get_sync(adev_to_drm(adev)->dev); + if (r < 0) + goto out; + r = amdgpu_bo_reserve(bo, false); if (unlikely(r != 0)) - return r; + goto out; /* * We only create shared fences for internal use, but importers @@ -201,11 +206,15 @@ static int amdgpu_dma_buf_attach(struct dma_buf *dmabuf, */ r = __dma_resv_make_exclusive(bo->tbo.base.resv); if (r) - return r; + goto out; bo->prime_shared_count++; amdgpu_bo_unreserve(bo); return 0; + +out: + pm_runtime_put_autosuspend(adev_to_drm(adev)->dev); + return r; } /** @@ -225,6 +234,9 @@ static void amdgpu_dma_buf_detach(struct dma_buf *dmabuf, if (attach->dev->driver != adev->dev->driver && bo->prime_shared_count) bo->prime_shared_count--; + + pm_runtime_mark_last_busy(adev_to_drm(adev)->dev); + pm_runtime_put_autosuspend(adev_to_drm(adev)->dev); } /** -- 2.25.4 _______________________________________________ amd-gfx mailing list amd-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/amd-gfx
