On Mon, Jan 13, 2014 at 07:53:47PM +0800, Anson Huang wrote: > #ifdef CONFIG_PM > +void imx6_suspend(void); So, imx6_suspend() takes no arguments. > +static int (*imx6_suspend_in_ocram_fn)(void __iomem *ocram_vbase); Oh, it takes one argument. > + /* > + * call low level suspend function in ocram, > + * as we need to float DDR IO. > + */ > + local_flush_tlb_all(); > + imx6_suspend_in_ocram_fn(suspend_ocram_base); Yes, definitely takes one argument... > + imx6_suspend_in_ocram_fn = (void *)fncpy( > + suspend_ocram_base + sizeof(*pm_info), > + &imx6_suspend, > + MX6Q_SUSPEND_OCRAM_SIZE - sizeof(*pm_info)); This cast here is needed to work around the above confusion. > +ENTRY(imx6_suspend) > + ldr r1, [r0, #PM_INFO_PBASE_OFFSET] > + ldr r2, [r0, #PM_INFO_RESUME_ADDR_OFFSET] > + ldr r3, [r0, #PM_INFO_CPU_TYPE_OFFSET] > + ldr r4, [r0, #PM_INFO_PM_INFO_SIZE_OFFSET] Yes, definitely takes one argument. If you fix the prototype for imx6_suspend, you don't need to cast the result of fncpy(). Casts should always be avoided where possible. -- FTTC broadband for 0.8mile line: 5.8Mbps down 500kbps up. Estimation in database were 13.1 to 19Mbit for a good line, about 7.5+ for a bad. Estimate before purchase was "up to 13.2Mbit". -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
