* Returns POLLIN | POLLRDNORM if data exists in the buffers,
* zero otherwise.
*/
-int ring_buffer_poll_wait(struct ring_buffer *buffer, int cpu,
+__poll_t ring_buffer_poll_wait(struct ring_buffer *buffer, int cpu,
struct file *filp, poll_table *poll_table)
{
struct ring_buffer_per_cpu *cpu_buffer;