linux-kernel - [PATCH 0/2] x86: turn off wrongly enabled CONFIG_GENERIC

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Message-Id: <1550469571-25933-1-git-send-email-yamada.masahiro@socionext.com>
Date:   Mon, 18 Feb 2019 14:59:29 +0900
From:   Masahiro Yamada <yamada.masahiro@...ionext.com>
To:     Ingo Molnar <mingo@...hat.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Borislav Petkov <bp@...en8.de>,
        "H . Peter Anvin" <hpa@...or.com>, x86@...nel.org
Cc:     Kalle Valo <kvalo@...eaurora.org>, linux-wireless@...r.kernel.org,
        Christoph Hellwig <hch@....de>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        "David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Lorenzo Bianconi <lorenzo.bianconi83@...il.com>,
        linux-mediatek@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, Felix Fietkau <nbd@....name>,
        Matthias Brugger <matthias.bgg@...il.com>
Subject: [PATCH 0/2] x86: turn off wrongly enabled CONFIG_GENERIC_HWEIGHT


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(-)

-- 
2.7.4