read_csr_ring_tail
u32 (*read_csr_ring_tail)(struct resource *csr_base_addr,
tail = csr_ops->read_csr_ring_tail(csr,
tail = csr_ops->read_csr_ring_tail(csr,
csr_ops->read_csr_ring_tail(bundle->csr_base,
csr_ops->read_csr_ring_tail = read_csr_ring_tail;
csr_ops->read_csr_ring_tail = read_csr_ring_tail;
csr_ops->read_csr_ring_tail = read_csr_ring_tail;