linux-kernel - Re: [PATCH] mmc: atmel-mci: fix mismatched section on atmci_cleanup

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Message-ID: <2004885.JTcy2BUf8D@wuerfel>
Date:	Sat, 27 Sep 2014 13:59:55 +0200
From:	Arnd Bergmann <arnd@...db.de>
To:	Pramod Gurav <pramod.gurav.etc@...il.com>
Cc:	Pramod Gurav <pramod.gurav@...rtplayin.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Ludovic Desroches <ludovic.desroches@...el.com>,
	Chris Ball <chris@...ntf.net>,
	Ulf Hansson <ulf.hansson@...aro.org>, linux-mmc@...r.kernel.org
Subject: Re: [PATCH] mmc: atmel-mci: fix mismatched section on atmci_cleanup_slot

On Saturday 27 September 2014 08:45:33 Pramod Gurav wrote:
> Hi Arnd,
> 
> On Sat, Sep 27, 2014 at 1:04 AM, Arnd Bergmann <arnd@...db.de> wrote:
> > As of 528bc7808f4e ("mmc: atmel-mci: Release mmc resources on failure in probe"),
> > the atmci_probe() function calls atmci_cleanup_slot in the failure path.
> >
> > This causes a new warning whenever the driver is built:
> >
> > WARNING: drivers/mmc/host/built-in.o(.init.text+0xa04): Section mismatch in reference from the function atmci_probe() to the function .exit.text:atmci_cleanup_slot()
> > The function __init atmci_probe() references
> > a function __exit atmci_cleanup_slot().
> Thanks for this though I am not owner of the driver but the last
> commit was mine.
> but how come I did not see this warning? Any flag with compiler that
> warned about this?

The warning above is only enabled if CONFIG_DEBUG_SECTION_MISMATCH is set, otherwise
you get this one:

WARNING: modpost: Found 1 section mismatch(es).
To see full details build your kernel with:
'make CONFIG_DEBUG_SECTION_MISMATCH=y'

	Arnd
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