ixp2000_reg_write(IXP2000_IRQ_ENABLE_CLR, (1 << irq)); 
ixp2000_reg_wrb(IXP2000_IRQ_ENABLE_CLR, (1 << irq)); 
static void ixp2000_irq_mask(unsigned int irq){	ixp2000_reg_write(IXP2000_IRQ_ENABLE_CLR, (1 << irq));}
10457	/local/tlutelli/issta_data/temp/c/2005_temp/2005/10457/e9b72e43d96a1ea2be0f513c78f16743a835d252/core.c/clean/arch/arm/mach-ixp2000/core.c