Retrieving radeon device struct from ring struct will be
used in next patch where debugfs's show function can only pass
one private data pointer.
Signed-off-by: Nirmoy Das <nirmoy.das@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
 };
 
 struct radeon_ring {
+       struct radeon_device    *rdev;
        struct radeon_bo        *ring_obj;
        volatile uint32_t       *ring;
        unsigned                rptr_offs;
 
        ring->ring_size = ring_size;
        ring->rptr_offs = rptr_offs;
        ring->nop = nop;
+       ring->rdev = rdev;
        /* Allocate ring buffer */
        if (ring->ring_obj == NULL) {
                r = radeon_bo_create(rdev, ring->ring_size, PAGE_SIZE, true,