On 03/19/2018 04:33 PM, kbuild test robot wrote: > tree/branch: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master > branch HEAD: a5444cde9dc2120612e50fc5a56c975e67a041fb Add linux-next specific files for 20180319 > > Regressions in current branch: > > ERROR: "__sw_hweight8" [drivers/net/wireless/mediatek/mt76/mt76.ko] undefined! Well, the driver could do: drivers/net/wireless/mediatek/mt76/Kconfig: + select GENERIC_HWEIGHT but maybe arch/ix64/Kconfig (where the build error is) could be asked to do: config GENERIC_HWEIGHT def_bool y like 23 other $arch-es do. Aha, ia64 provides inline functions via some a twisty maze of header files. Tony, Fengguang, what header(s) should be used to reach __arch_hweight8()? thanks, -- ~Randy
