1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
index ffbe9aa9f232..86b93245bf9d 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
@@ -768,8 +768,13 @@ int amdgpu_cs_wait_ioctl(struct drm_device *dev, void *data,
         uint64_t seq[AMDGPU_MAX_RINGS] = {0};
         struct amdgpu_ring *ring = NULL;
         unsigned long timeout = amdgpu_gem_timeout(wait->in.timeout);
+        struct amdgpu_ctx *ctx;
         long r;
 
+        ctx = amdgpu_ctx_get(filp->driver_priv, wait->in.ctx_id);
+        if (ctx == NULL)
+                return -EINVAL;
+
         r = amdgpu_cs_get_ring(adev, wait->in.ip_type, wait->in.ip_instance,
                                wait->in.ring, &ring);
         if (r)
@@ -778,6 +783,7 @@ int amdgpu_cs_wait_ioctl(struct drm_device *dev, void *data,
         seq[ring->idx] = wait->in.handle;
 
         r = amdgpu_fence_wait_seq_timeout(adev, seq, true, timeout);
+        amdgpu_ctx_put(ctx);
         if (r < 0)
                 return r;