linux-kernel - Re: Linux next-20190807: arm64: build failed - phy-rockchip-inno-hdmi.c:1046:26: error: anonymous bit-field has negative width (-1)

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Date:   Thu, 8 Aug 2019 11:01:08 +1000
From:   Stephen Rothwell <sfr@...b.auug.org.au>
To:     Naresh Kamboju <naresh.kamboju@...aro.org>
Cc:     open list <linux-kernel@...r.kernel.org>,
        Linux-Next Mailing List <linux-next@...r.kernel.org>,
        kishon@...com, heiko@...ech.de,
        linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org, lkft-triage@...ts.linaro.org
Subject: Re: Linux next-20190807: arm64: build failed -
 phy-rockchip-inno-hdmi.c:1046:26: error: anonymous bit-field has negative
 width (-1)

Hi Naresh,

On Wed, 7 Aug 2019 16:48:15 +0530 Naresh Kamboju <naresh.kamboju@...aro.org> wrote:
>
> Linux next 20190807 arm64 default config build failed due to below error.
> 
> /drivers/phy/rockchip/phy-rockchip-inno-hdmi.c:1046:26: error:
> anonymous bit-field has negative width (-1)
>                 inno_write(inno, 0xc6, RK3328_TERM_RESISTOR_CALIB_SPEED_7_0(v));
>                                        ^
> ../drivers/phy/rockchip/phy-rockchip-inno-hdmi.c:201:50: note:
> expanded from macro 'RK3328_TERM_RESISTOR_CALIB_SPEED_7_0'
> #define RK3328_TERM_RESISTOR_CALIB_SPEED_7_0(x)         UPDATE(x, 7, 9)
>                                                         ^
> ../drivers/phy/rockchip/phy-rockchip-inno-hdmi.c:24:42: note: expanded
> from macro 'UPDATE'
> #define UPDATE(x, h, l)         (((x) << (l)) & GENMASK((h), (l)))
>                                                 ^
> ../include/linux/bits.h:39:3: note: expanded from macro 'GENMASK'
>         (GENMASK_INPUT_CHECK(high, low) + __GENMASK(high, low))
>          ^
> ../include/linux/bits.h:24:18: note: expanded from macro 'GENMASK_INPUT_CHECK'
>         ((unsigned long)BUILD_BUG_ON_ZERO(__builtin_choose_expr( \
>                         ^
> ../include/linux/build_bug.h:16:47: note: expanded from macro
> 'BUILD_BUG_ON_ZERO'
> #define BUILD_BUG_ON_ZERO(e) (sizeof(struct { int:(-!!(e)); }))
> 
> Config link,
> https://storage.kernelci.org/next/master/next-20190807/arm64/defconfig/clang-8/kernel.config
> 
> Build link,
> https://storage.kernelci.org/next/master/next-20190807/arm64/defconfig/clang-8/build.log

I think the patch that caused this has been removed form linux-next for
today (it had other problems as well).

-- 
Cheers,
Stephen Rothwell

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