linux-kernel - Re: linux-next: build failure after merge of the pci tree

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Date:   Mon, 29 Jan 2018 15:41:46 +1100
From:   Michael Ellerman <mpe@...erman.id.au>
To:     Rob Herring <robh@...nel.org>,
        Stephen Rothwell <sfr@...b.auug.org.au>
Cc:     Bjorn Helgaas <bhelgaas@...gle.com>,
        Linux-Next Mailing List <linux-next@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: linux-next: build failure after merge of the pci tree

Rob Herring <robh@...nel.org> writes:

> On Wed, Jan 24, 2018 at 11:49 PM, Stephen Rothwell <sfr@...b.auug.org.au> wrote:
>> Hi Bjorn,
>>
>> After merging the pci tree, today's linux-next build (powerpc
>> ppc64_defconfig) failed like this:
>>
>> arch/powerpc/kernel/pci-common.c: In function 'pcibios_setup
>> _device':
>> arch/powerpc/kernel/pci-common.c:406:15: error: 'virq' may be used uninitialized in this function [-Werror=maybe-uninitialized]
>>   pci_dev->irq = virq;
>>   ~~~~~~~~~~~~~^~~~~~
>> arch/powerpc/kernel/pci-common.c:365:15: note: 'virq' was declared here
>>   unsigned int virq;
>>                ^~~~
>
> I guess I need to update my PPC compiler from 4.8.0. It doesn't warn
> or error on this. Neither did 0-day.

https://toolchains.free-electrons.com/

Has 5.4.0 and 7.2.0 for both big and little endian.

cheers