AZX_IRS_BUSY
if (!((azx_readw(chip, IRS) & AZX_IRS_BUSY))) {
AZX_IRS_BUSY);
if (!((snd_hdac_chip_readw(bus, IRS) & AZX_IRS_BUSY))) {
snd_hdac_chip_updatew(bus, IRS, AZX_IRS_BUSY, AZX_IRS_BUSY);