KS8851 selects MICREL_PHY, which depends on PTP_1588_CLOCK_OPTIONAL, so make KS8851 also depend on PTP_1588_CLOCK_OPTIONAL. Fixes kconfig warning and build errors: WARNING: unmet direct dependencies detected for MICREL_PHY Depends on [m]: NETDEVICES [=y] && PHYLIB [=y] && PTP_1588_CLOCK_OPTIONAL [=m] Selected by [y]: - KS8851 [=y] && NETDEVICES [=y] && ETHERNET [=y] && NET_VENDOR_MICREL [=y] && SPI [=y] ld.lld: error: undefined symbol: ptp_clock_register referenced by micrel.c net/phy/micrel.o:(lan8814_probe) in archive drivers/built-in.a ld.lld: error: undefined symbol: ptp_clock_index referenced by micrel.c net/phy/micrel.o:(lan8814_ts_info) in archive drivers/built-in.a Reported-by: kernel test robot <lkp@intel.com> Fixes: ece19502834d ("net: phy: micrel: 1588 support for LAN8814 phy") Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com> Tested-by: Randy Dunlap <rdunlap@infradead.org> Acked-by: Randy Dunlap <rdunlap@infradead.org> Link: https://lore.kernel.org/r/20220405065936.4105272-1-horatiu.vultur@microchip.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Linux kernel ============ There are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. Please read Documentation/admin-guide/README.rst first. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. The formatted documentation can also be read online at: https://www.kernel.org/doc/html/latest/ There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.
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