Re: [PATCH 4.19 18/56] hv: utils: add PTP_1588_CLOCK to Kconfig to fix build

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On Mon, Dec 20, 2021 at 09:31:36PM +0100, Pavel Machek wrote:
> Hi!
> 
> > From: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
> > 
> > [ Upstream commit 1dc2f2b81a6a9895da59f3915760f6c0c3074492 ]
> > 
> > The hyperv utilities use PTP clock interfaces and should depend a
> > a kconfig symbol such that they will be built as a loadable module or
> > builtin so that linker errors do not happen.
> > 
> > Prevents these build errors:
> > 
> > ld: drivers/hv/hv_util.o: in function `hv_timesync_deinit':
> > hv_util.c:(.text+0x37d): undefined reference to `ptp_clock_unregister'
> > ld: drivers/hv/hv_util.o: in function `hv_timesync_init':
> > hv_util.c:(.text+0x738): undefined reference to `ptp_clock_register'
> 
> This is bad idea for 4.19:
> 
> > +++ b/drivers/hv/Kconfig
> > @@ -16,6 +16,7 @@ config HYPERV_TSCPAGE
> >  config HYPERV_UTILS
> >  	tristate "Microsoft Hyper-V Utilities driver"
> >  	depends on HYPERV && CONNECTOR && NLS
> > +	depends on PTP_1588_CLOCK_OPTIONAL
> >  	help
> >  	  Select this option to enable the Hyper-V Utilities.
> 
> grep -ri PTP_1588_CLOCK_OPTIONAL .
> 
> Results in no result in 4.19. So this will break hyperv. No results in
> 5.10, either, so it is bad idea there, too.

Thanks, I will go delete it from all queues.

greg k-h



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