On 07/15/2014 09:11 AM, Chen Gang wrote: > > > On 07/15/2014 08:53 AM, Guenter Roeck wrote: >> On 07/14/2014 05:34 PM, Chen Gang wrote: >>> On 07/14/2014 05:22 PM, Chen Gang wrote: >>>> >>>> 在 2014年7月14日，下午4:57，Richard Weinberger <richard@xxxxxx> 写道： >>>> >>>>> Am 14.07.2014 10:48, schrieb Lars-Peter Clausen: >>>>>> On 07/14/2014 10:31 AM, Richard Weinberger wrote: >>>>>>> Am 13.07.2014 22:17, schrieb Greg Kroah-Hartman: >>>>>>>> On Sun, Jul 13, 2014 at 09:33:38PM +0200, Richard Weinberger wrote: >>>>>>>>> Maybe we could add COMPILE_TEST to the version string too? >>>>>>>>> Just to detect such kernels fast in user bug reports... >>>>>>>> >>>>>>>> What kind of bug report are you going to get? >>>>>>> >>>>>>> User manages to enable CONFIG_FOO by selecting COMPILE_TEST and >>>>>>> complains that it does not work. :) >>>>>> >>>>>> These drivers are typically drivers for some SoC peripheral and the >>>>>> device will simply physically not exist on a platform that does not >>>>>> provide HAS_IOMEM. This is not really any >>>>>> different from making the driver selectable via COMPILE_TEST for >>>>>> any other platform. To hit the issue you'd have to instantiate a >>>>>> device driver instance for a device that >>>>>> physically does not exist. This will always result in a failure. >>>>> >>>>> Okay, you have convinced me. :) >>>>> >>> >>> After search the history patches, I found one related patch which made >>> by myself (when I am in Asianux): >>> >>> "https://lkml.org/lkml/2013/7/1/641"; >>> >>> For me, it is a long discussion, and forced many members have to join >>> in. Please help check again. >>> >> >> One thing you could try would be to return NULL (or where appropriate >> an error) in the #else case of CONFIG_HAS_IOMEM and CONFIG_HAS_IOPORT, >> ie dont take COMPILE_TEST into account at all. Obviously that means >> you won't be able to dump a warning message in the COMPILE_TEST >> case, but at least the code would compile. The rejection of above patch >> would make a good case for this approach. >> > > OK, thanks: at least, it can be improved. But still welcome any other > opinions of another related members. > If no reply within 3 days (2014-07-18), I shall try to send related patch for it within this week end (2014-07-20). Thanks. -- Chen Gang Open share and attitude like air water and life which God blessed -- To unsubscribe from this list: send the line "unsubscribe linux-iio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
