linux-kernel - Re: [PATCH] iommu: dmar: fix harmless section mismatch warning

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Date:   Tue, 19 Sep 2017 11:45:24 +0200
From:   Joerg Roedel <joro@...tes.org>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
        Jani Nikula <jani.nikula@...el.com>,
        Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>,
        Lv Zheng <lv.zheng@...el.com>, Ashok Raj <ashok.raj@...el.com>,
        iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] iommu: dmar: fix harmless section mismatch warning

On Tue, Sep 12, 2017 at 10:10:21PM +0200, Arnd Bergmann wrote:
> Building with gcc-4.6 results in this warning due to
> dmar_table_print_dmar_entry being inlined as in newer compiler versions:
> 
> WARNING: vmlinux.o(.text+0x5c8bee): Section mismatch in reference from the function dmar_walk_remapping_entries() to the function .init.text:dmar_table_print_dmar_entry()
> The function dmar_walk_remapping_entries() references
> the function __init dmar_table_print_dmar_entry().
> This is often because dmar_walk_remapping_entries lacks a __init
> annotation or the annotation of dmar_table_print_dmar_entry is wrong.
> 
> This removes the __init annotation to avoid the warning. On compilers
> that don't show the warning today, this should have no impact since the
> function gets inlined anyway.
> 
> Signed-off-by: Arnd Bergmann <arnd@...db.de>
> ---
>  drivers/iommu/dmar.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

Applied, thanks.