linux-kernel - Re: [PATCH] Partially Revert "of: fix sparse warnings in fdt, irq, reserved mem, and resolver code"

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Date:   Thu, 11 May 2017 17:44:34 +0200
From:   Arnd Bergmann <arnd@...db.de>
To:     Rob Herring <robh@...nel.org>
Cc:     devicetree@...r.kernel.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Frank Rowand <frowand.list@...il.com>,
        Marek Szyprowski <m.szyprowski@...sung.com>
Subject: Re: [PATCH] Partially Revert "of: fix sparse warnings in fdt, irq,
 reserved mem, and resolver code"

On Thu, May 11, 2017 at 5:30 PM, Rob Herring <robh@...nel.org> wrote:
> A change to function pointers that was meant to address a sparse warning
> turned out to cause hundreds of new gcc-7 warnings:
>
> include/linux/of_irq.h:11:13: error: type qualifiers ignored on function return type [-Werror=ignored-qualifiers]
> drivers/of/of_reserved_mem.c: In function '__reserved_mem_init_node':
> drivers/of/of_reserved_mem.c:200:7: error: type qualifiers ignored on function return type [-Werror=ignored-qualifiers]
>    int const (*initfn)(struct reserved_mem *rmem) = i->data;
>
> Turns out the sparse warnings were spurious and have been fixed in
> upstream sparse since 0.5.0 in commit "sparse: treat function pointers
> as pointers to const data".
>
> This partially reverts commit 17a70355ea576843a7ac851f1db26872a50b2850.
>
> Fixes: 17a70355ea57 ("of: fix sparse warnings in fdt, irq, reserved mem, and resolver code")
> Reported-by: Arnd Bergmann <arnd@...db.de>
> Signed-off-by: Rob Herring <robh@...nel.org>
> ---
> Arnd,
>
> Doing this as a partial revert instead and added sparse version
> information to the commit msg.

Looks good, thanks!

      Arnd