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SubjectRe: [PATCH 5.4 004/475] hv: utils: add PTP_1588_CLOCK to Kconfig to fix build
On Thu, Apr 14, 2022 at 08:32:26AM -0700, Randy Dunlap wrote:
>
>
> On 4/14/22 06:06, Greg Kroah-Hartman wrote:
> > From: Randy Dunlap <rdunlap@infradead.org>
> >
> > commit 1dc2f2b81a6a9895da59f3915760f6c0c3074492 upstream.
> >
> > 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'
> >
> > Fixes: 3716a49a81ba ("hv_utils: implement Hyper-V PTP source")
> > Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
> > Reported-by: kernel test robot <lkp@intel.com>
> > Cc: Arnd Bergmann <arnd@arndb.de>
> > Cc: "K. Y. Srinivasan" <kys@microsoft.com>
> > Cc: Haiyang Zhang <haiyangz@microsoft.com>
> > Cc: Stephen Hemminger <sthemmin@microsoft.com>
> > Cc: Wei Liu <wei.liu@kernel.org>
> > Cc: Dexuan Cui <decui@microsoft.com>
> > Cc: linux-hyperv@vger.kernel.org
> > Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> > Reviewed-by: Michael Kelley <mikelley@microsoft.com>
> > Link: https://lore.kernel.org/r/20211126023316.25184-1-rdunlap@infradead.org
> > Signed-off-by: Wei Liu <wei.liu@kernel.org>
> > Cc: Petr Štetiar <ynezz@true.cz>
> > Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> > ---
> > drivers/hv/Kconfig | 1 +
> > 1 file changed, 1 insertion(+)
> >
> > --- a/drivers/hv/Kconfig
> > +++ b/drivers/hv/Kconfig
> > @@ -17,6 +17,7 @@ config HYPERV_TIMER
> > config HYPERV_UTILS
> > tristate "Microsoft Hyper-V Utilities driver"
> > depends on HYPERV && CONNECTOR && NLS
> > + depends on PTP_1588_CLOCK_OPTIONAL
>
> AFAICT PTP_1588_CLOCK_OPTIONAL does not exist in 5.4 kernels,
> so this should not be used there.

Gotta love it when people lie in Fixes: tags :(

I'll go drop this, thanks!

greg k-h

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