Hi Arnd, Ok, I will remove the #ifdef in the next version. Thanks. Hi All, Is there any others comments? Thanks for your review. Best Regards, Yuan Yao On Wednesday, July 15, 2015 10:55 PM Arnd wrote: > On Wednesday 15 July 2015 10:29:55 Yao Yuan wrote: > > Hi Arnd, > > > > Thanks for your review. > > And can you give me more information? > > In my opinion, The fsl_edma_pm_state will just be used when CONFIG_PM > > support. So why not use the #ifdefs to remove the unnecessary code? Since > the PM will not be selected in many use cases. > > I would consider code readability more important than saving a few instructions, > and the #ifdef interrupts the reading flow. > Another aspect is that the compiler does not produce warnings for incorrect > code in an #ifdef, so we try to use e.g. 'if (IS_ENABLED(CONFIG_FOO))' > instead of '#ifdef CONFIG_FOO' wherever possible. > > Arnd -- To unsubscribe from this list: send the line "unsubscribe dmaengine" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html