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Message-ID: <2e59728e-25fa-cc15-3c63-3566dc2ae69f@huawei.com>
Date:   Wed, 26 Jun 2019 16:21:56 +0100
From:   John Garry <john.garry@...wei.com>
To:     Olof Johansson <olof@...om.net>, Wei Xu <xuwei5@...ilicon.com>
CC:     ARM-SoC Maintainers <arm@...nel.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        Arnd Bergmann <arnd@...db.de>, Linuxarm <linuxarm@...wei.com>,
        "xuwei (O)" <xuwei5@...wei.com>,
        "Bjorn Helgaas" <bhelgaas@...gle.com>, <linux-pci@...r.kernel.org>,
        "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Zhangyi ac <zhangyi.ac@...wei.com>,
        "Liguozhu (Kenneth)" <liguozhu@...ilicon.com>,
        <jinying@...ilicon.com>, huangdaode <huangdaode@...ilicon.com>,
        Tangkunshan <tangkunshan@...wei.com>,
        Jonathan Cameron <Jonathan.Cameron@...wei.com>,
        Shameerali Kolothum Thodi 
        <shameerali.kolothum.thodi@...wei.com>,
        Shiju Jose <shiju.jose@...wei.com>,
        Salil Mehta <salil.mehta@...wei.com>
Subject: Re: [GIT PULL] Hisilicon fixes for v5.2

On 25/06/2019 14:31, John Garry wrote:
> On 25/06/2019 14:03, Olof Johansson wrote:
>>>> are available in the Git repository at:
>>>> > >
>>>> > >   git://github.com/hisilicon/linux-hisi.git tags/hisi-fixes-for-5.2
>>>> > >
>>>> > > for you to fetch changes up to
>>>> 07c811af1c00d7b4212eac86900b023b6405a954:
>>>> > >
>>>> > >   lib: logic_pio: Enforce LOGIC_PIO_INDIRECT region ops are set
>>>> at registration (2019-06-25 09:40:42 +0100)
>>>> > >
>>>> > > ----------------------------------------------------------------
>>>> > > Hisilicon fixes for v5.2-rc
>>>> > >
>>>> > > - fixed RCU usage in logical PIO
>>>> > > - Added a function to unregister a logical PIO range in logical PIO
>>>> > >   to support the fixes in the hisi-lpc driver
>>>> > > - fixed and optimized hisi-lpc driver to avoid potential
>>>> use-after-free
>>>> > >   and driver unbind crash
>>> >
>>> > Merged to fixes, thanks.
>>
>> This broke arm64 allmodconfig:
>>
>>        arm64.allmodconfig:
>> drivers/bus/hisi_lpc.c:656:3: error: implicit declaration of function
>> 'hisi_lpc_acpi_remove'; did you mean 'hisi_lpc_acpi_probe'?
>> [-Werror=implicit-function-declaration]

As an aside, I find it a little strange that arm64 allmodconfig does not 
have CONFIG_ACPI set. It used to have it set, and this patch stopped that:

5bcd44083a082f314032969cd6db1eb8275ac77a is the first bad commit
commit 5bcd44083a082f314032969cd6db1eb8275ac77a
Author: AKASHI Takahiro <takahiro.akashi@...aro.org>
Date:   Mon Jul 23 10:57:29 2018 +0900

     drivers: acpi: add dependency of EFI for arm64

     As Ard suggested, CONFIG_ACPI && !CONFIG_EFI doesn't make sense on 
arm64,
     while CONFIG_ACPI and CONFIG_CPU_BIG_ENDIAN doesn't make sense either.

     As CONFIG_EFI already has a dependency of !CONFIG_CPU_BIG_ENDIAN, it is
     good enough to add a dependency of CONFIG_EFI to avoid any useless
     combination of configuration.

     This bug, reported by Will, will be revealed when my patch series,
     "arm64: kexec,kdump: fix boot failures on acpi-only system," is applied
     and the kernel is built under allmodconfig.

     Signed-off-by: AKASHI Takahiro <takahiro.akashi@...aro.org>
     Suggested-by: Ard Biesheuvel <ard.biesheuvel@...aro.org>
     Signed-off-by: Will Deacon <will.deacon@....com>

That patch stopped many configs being set for allmodconfig.

With this change, CONFIG_EFI is not set. I think that this is because 
CONFIG_CPU_BIG_ENDIAN is set for arm64 allmodconfig.

Any opinion on this? Could we change CONFIG_CPU_BIG_ENDIAN to be unset 
for arm64?

>>
>>
>
> Uhhh, that's my fault - I didn't provide a stub for !ACPI. Sorry. I'll
> send a fixed v3 series.
>
>>
>> Please build and test your branches before you send pull requests, Wei.
>>
>> I've dropped the branch again; please re-submit when fixed. I think
>> it's probably 5.3 material now.
>>
>
> Thanks,
> John
>
>>
>> -Olof
>>
>> .
>>
>


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