snd_ump_receive_ump_val
if (snd_ump_receive_ump_val(ep->ump, ump) <= 0)
if (snd_ump_receive_ump_val(ep->ump, *data) <= 0)
int snd_ump_receive_ump_val(struct snd_ump_endpoint *ump, u32 val);
EXPORT_SYMBOL_GPL(snd_ump_receive_ump_val);
n = snd_ump_receive_ump_val(ump, *p++);