jz4740_mmc_write_irq_reg
jz4740_mmc_write_irq_reg(host, JZ_MMC_IRQ_DATA_TRAN_DONE);
jz4740_mmc_write_irq_reg(host, tmp & ~irq_reg);
jz4740_mmc_write_irq_reg(host, JZ_MMC_IRQ_SDIO);
jz4740_mmc_write_irq_reg(host, irq_reg);
jz4740_mmc_write_irq_reg(host, ~0);