.poll file operation should only return POLLIN | POLLRDNORM if frames are available for dequeuing otherwise it should return 0.
Returns POLLIN | POLLRDNORM without checking for available frames prevents userspace poll/select methods from sleeping waiting for file descriptor event.
.poll file operation should only return POLLIN | POLLRDNORM if frames are available for dequeuing otherwise it should return 0. Returns POLLIN | POLLRDNORM without checking for available frames prevents userspace poll/select methods from sleeping waiting for file descriptor event.