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

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Date:   Wed, 5 Apr 2017 13:36:28 +1000
From:   Stephen Rothwell <sfr@...b.auug.org.au>
To:     Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...e.hu>,
        "H. Peter Anvin" <hpa@...or.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Thierry Reding <thierry.reding@...il.com>
Cc:     Linux-Next Mailing List <linux-next@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Arto Merilainen <amerilainen@...dia.com>,
        Alexandre Courbot <acourbot@...dia.com>,
        Mikko Perttunen <mperttunen@...dia.com>
Subject: linux-next: build failure after merge of the tip tree

Hi all,

After merging the tip tree, today's linux-next build (arm
multi_v7_defconfig) failed like this:

drivers/gpu/built-in.o:(__tracepoints+0x64): multiple definition of `__tracepoint_remove_device_from_group'
drivers/iommu/built-in.o:(__tracepoints+0x64): first defined here
drivers/gpu/built-in.o:(__tracepoints+0x3c): multiple definition of `__tracepoint_detach_device_from_domain'
drivers/iommu/built-in.o:(__tracepoints+0x3c): first defined here
drivers/gpu/built-in.o:(__tracepoints+0x0): multiple definition of `__tracepoint_io_page_fault'
drivers/iommu/built-in.o:(__tracepoints+0x0): first defined here
drivers/gpu/built-in.o:(__tracepoints+0x78): multiple definition of `__tracepoint_add_device_to_group'
drivers/iommu/built-in.o:(__tracepoints+0x78): first defined here
drivers/gpu/built-in.o:(__tracepoints+0x14): multiple definition of `__tracepoint_unmap'
drivers/iommu/built-in.o:(__tracepoints+0x14): first defined here
drivers/gpu/built-in.o:(__tracepoints+0x28): multiple definition of `__tracepoint_map'
drivers/iommu/built-in.o:(__tracepoints+0x28): first defined here
drivers/gpu/built-in.o:(__tracepoints+0x50): multiple definition of `__tracepoint_attach_device_to_domain'
drivers/iommu/built-in.o:(__tracepoints+0x50): first defined here

The tip tree has not changed since yesterday.  However, reverting
the drm-tegra tree fixes the build problem.  So there is some interaction
between the tip tree and today's drm-tegra tree.

So for now, I have reverted the merge of the drm-tegra tree.

-- 
Cheers,
Stephen Rothwell