OMAP2_MCSPI_IRQSTATUS
irqstat = mcspi_read_reg(mcspi->ctlr, OMAP2_MCSPI_IRQSTATUS);
irqstat_reg = mcspi->base + OMAP2_MCSPI_IRQSTATUS;
mcspi_write_reg(mcspi->ctlr, OMAP2_MCSPI_IRQSTATUS,