At least one Arm subarch (pxa) does no provide an implementation of this function. As far as I can see there is no way for a driver wishing to use it to detect it's absence. This is marked in clk.h as being optional for 'Machine Class support'. Obvious solutions to this are:
1) It is effectively only usable by platform specific drivers as no more generic driver can know it is available. Perhaps even a stub that returns an appropriate error would be acceptable. 2) It is not as optional as the header implies and should always be implemented if the rest of the clk framework is. 3) There should be some means of detecting its absense so that drivers can be dependant on its presene. Which is the correct one? This issue came up as a result of the thread http://marc.info/?l=linux-iio&m=137026653516438&w=2 [PATCH RESEND V2 3/4] iio: frequency: adf4350: Add support for clock consumer framework on [email protected] Thanks, Jonathan -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
