AR5312_IMR
ar5312_rst_reg_mask(AR5312_IMR, BIT(d->hwirq), 0);
ar5312_rst_reg_read(AR5312_IMR); /* flush write buffer */
ar5312_rst_reg_read(AR5312_IMR);
ar5312_rst_reg_mask(AR5312_IMR, 0, BIT(d->hwirq));