netdev - Re: [PATCH AUTOSEL 4.14 20/20] mdio_bus: unhide mdio_bus

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Date: Thu, 1 Jun 2023 05:27:15 -0400
From: Sasha Levin <sashal@...nel.org>
To: Arnd Bergmann <arnd@...db.de>
Cc: linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	Jakub Kicinski <kuba@...nel.org>, Andrew Lunn <andrew@...n.ch>,
	Heiner Kallweit <hkallweit1@...il.com>,
	Netdev <netdev@...r.kernel.org>
Subject: Re: [PATCH AUTOSEL 4.14 20/20] mdio_bus: unhide mdio_bus_init
 prototype

On Thu, May 25, 2023 at 10:05:01PM +0200, Arnd Bergmann wrote:
>On Thu, May 25, 2023, at 20:45, Sasha Levin wrote:
>> From: Arnd Bergmann <arnd@...db.de>
>>
>> [ Upstream commit 2e9f8ab68f42b059e80db71266c1675c07c664bd ]
>>
>> mdio_bus_init() is either used as a local module_init() entry,
>> or it gets called in phy_device.c. In the former case, there
>> is no declaration, which causes a warning:
>>
>> drivers/net/phy/mdio_bus.c:1371:12: error: no previous prototype for
>> 'mdio_bus_init' [-Werror=missing-prototypes]
>>
>> Remove the #ifdef around the declaration to avoid the warning..
>
>Hi Sasha,
>
>While there is nothing wrong with backporting the -Wmissing-prototypes
>warning fixes I sent, there is also really no point unless you
>want to backport all 140 of them and then also turn on that warning
>during testing.
>
>The option is only enabled at the W=1 level or when using sparse (C=1).
>I hope to get these all done in 6.5 for the most common architectures,
>but I wouldn't bother putting them into stable kernels.

I'll go drop it. In general, we've been trying to avoid W=1 fixes but
sometimes they end up sneaking in, which is also okay...

-- 
Thanks,
Sasha