tinyalsa 2.0.0:When I use tinyplay with -M (mmap), the wav file cannot be played normally

[jone]

tinyalsa version is 2.0.0, i use command:

tinyplayv2  /data/test11.wav -D 0 -d 2 -M

Debugging found that it was blocked in the function pcm_mmap_transfer, and pcm->flags==PCM_NONBLOCK, lead to can not play

        if (!avail) {
            if (pcm->flags & PCM_NONBLOCK) {
                errno = EAGAIN;
                break;
            }

            /* wait for interrupt */
            err = pcm_wait(pcm, -1);
            if (err < 0) {
                errno = -err;
                break;
            }
        }

I want to know how to use tinyplay with mmap flag;