[PATCH 0/2] x86: turn off wrongly enabled CONFIG_GENERIC_HWEIGHT

Masahiro Yamada <yamada.masahiro@xxxxxxxxxxxxx> · Mon, 18 Feb 2019 14:59:29 +0900

x86 should not enable CONFIG_GENERIC_HWEIGHT
because lib/hweight.c is not used by x86.

The only user is drivers/net/wireless/mediatek/mt76/mac80211.c

Of course, this driver is wrong since drivers should use the
generic API, hweight8().

After fixing it, x86 does not need to compile lib/hweight.c at all.

The real implementation is located in arch/x86/lib/hweight.S

Masahiro Yamada (2):
  wireless: mt76: call hweight8() instead of __sw_hweight8()
  x86: disable CONFIG_GENERIC_HWEIGHT and remove __HAVE_ARCH_SW_HWEIGHT

 arch/x86/Kconfig                              | 3 ---
 arch/x86/include/asm/arch_hweight.h           | 2 --
 drivers/net/wireless/mediatek/mt76/mac80211.c | 2 +-
 lib/hweight.c                                 | 4 ----
 4 files changed, 1 insertion(+), 10 deletions(-)

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2.7.4