From: Naresh Kamboju <naresh.kamboju@linaro.org>
To: linux- stable <stable@vger.kernel.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Sasha Levin <sashal@kernel.org>, Arnd Bergmann <arnd@arndb.de>,
saravanak@google.com
Subject: Re: stable-rc 5.4: arm build failed: arm-init.c:327:12: error: implicit declaration of function ‘get_dev_from_fwnode’
Date: Mon, 20 Jul 2020 20:22:46 +0530 [thread overview]
Message-ID: <CA+G9fYs0gT__dkBE7XbRj-n5kZmfeHFj=GXhHZ+d-BSNBdtYyg@mail.gmail.com> (raw)
In-Reply-To: <CA+G9fYuPe=XkrTx+yDo556D5t4wrFRFXctPPb2+7w+v-hAHvyw@mail.gmail.com>
On Mon, 20 Jul 2020 at 20:16, Naresh Kamboju <naresh.kamboju@linaro.org> wrote:
>
> arm build failed on stable-rc 5.4 branch.
>
> make -sk KBUILD_BUILD_USER=TuxBuild -C/linux -j32 ARCH=arm
> CROSS_COMPILE=arm-linux-gnueabihf- HOSTCC=gcc CC="sccache
> arm-linux-gnueabihf-gcc" O=build zImage
> #
> ../drivers/firmware/efi/arm-init.c: In function ‘efifb_add_links’:
> ../drivers/firmware/efi/arm-init.c:327:12: error: implicit declaration
> of function ‘get_dev_from_fwnode’
> [-Werror=implicit-function-declaration]
> 327 | sup_dev = get_dev_from_fwnode(&sup_np->fwnode);
> | ^~~~~~~~~~~~~~~~~~~
same build problem occurred on
stable -rc 4.9, 4.14 and 4.19 and 5.4 for arm and arm64 architectures.
> efi/arm: Defer probe of PCIe backed efifb on DT systems
> [ Upstream commit 64c8a0cd0a535891d5905c3a1651150f0f141439 ]
>
> The new of_devlink support breaks PCIe probing on ARM platforms booting
> via UEFI if the firmware exposes a EFI framebuffer that is backed by a
> PCI device. The reason is that the probing order gets reversed,
> resulting in a resource conflict on the framebuffer memory window when
> the PCIe probes last, causing it to give up entirely.
>
> Given that we rely on PCI quirks to deal with EFI framebuffers that get
> moved around in memory, we cannot simply drop the memory reservation, so
> instead, let's use the device link infrastructure to register this
> dependency, and force the probing to occur in the expected order.
>
> Co-developed-by: Saravana Kannan <saravanak@google.com>
> Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
> Signed-off-by: Saravana Kannan <saravanak@google.com>
> Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
> Signed-off-by: Ingo Molnar <mingo@kernel.org>
> Link: https://lore.kernel.org/r/20200113172245.27925-9-ardb@kernel.org
> Signed-off-by: Sasha Levin <sashal@kernel.org>
>
>
> --
> Linaro LKFT
> https://lkft.linaro.org
next prev parent reply other threads:[~2020-07-20 14:53 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-20 14:46 stable-rc 5.4: arm build failed: arm-init.c:327:12: error: implicit declaration of function ‘get_dev_from_fwnode’ Naresh Kamboju
2020-07-20 14:52 ` Naresh Kamboju [this message]
2020-07-20 15:04 ` Arnd Bergmann
2020-07-20 15:24 ` Greg Kroah-Hartman
2020-07-20 15:25 ` Greg Kroah-Hartman
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