ALSA: ice1724 - Dynamic MIDI TX irq control

MIDI_TX IRQ seems always pending when any bytes on FIFO is available.
Thus, it's better to enable MPU_TX only when any bytres are really
stored in the substream, and disables immediately when the queue
becomes empty.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
1 file changed