AR5K_AR2315_AHB_ARB_CTL
reg = ioread32((void __iomem *) AR5K_AR2315_AHB_ARB_CTL);
iowrite32(reg, (void __iomem *) AR5K_AR2315_AHB_ARB_CTL);
reg = ioread32((void __iomem *) AR5K_AR2315_AHB_ARB_CTL);
iowrite32(reg, (void __iomem *) AR5K_AR2315_AHB_ARB_CTL);