flush_channel
flush_channel(dev, 0, 0, 0); \
flush_channel(dev, 1, 0, 0); \
flush_channel(dev, 2, 0, 0); \
flush_channel(dev, 3, 0, 0); \
flush_channel(dev, 0, 0, 0); \
flush_channel(dev, 1, 0, 0); \
flush_channel(dev, 2, 0, 0); \
flush_channel(dev, 3, 0, 0); \
flush_channel(dev, ch, error, reset_ch);
flush_channel(dev, ch, -EIO, 1);