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

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Message-ID: <CAPDyKFoj6jKOF6e5fN3Yt3VpiHQ4Da8sJHc6tK3K17MO0V-PEQ@mail.gmail.com>
Date:	Mon, 29 Sep 2014 11:43:28 +0200
From:	Ulf Hansson <ulf.hansson@...aro.org>
To:	Arnd Bergmann <arnd@...db.de>
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>,
	linux-mmc <linux-mmc@...r.kernel.org>
Subject: Re: [PATCH] mmc: atmel-mci: fix mismatched section on atmci_cleanup_slot

On 26 September 2014 21:34, 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().
>
> Gcc correctly warns about this function getting dropped in the link stage
> for the built-in case, which would cause undefined behavior when this error
> path is hit. The solution is to simply drop the __exit annotation.
>
> Signed-off-by: Arnd Bergmann <arnd@...db.de>
> Fixes: 528bc7808f4e ("mmc: atmel-mci: Release mmc resources on failure in probe")

Thanks! Applied for next!

Kind regards
Uffe

>
> diff --git a/drivers/mmc/host/atmel-mci.c b/drivers/mmc/host/atmel-mci.c
> index 772ef5b0e4d5..974626087732 100644
> --- a/drivers/mmc/host/atmel-mci.c
> +++ b/drivers/mmc/host/atmel-mci.c
> @@ -2244,7 +2244,7 @@ static int __init atmci_init_slot(struct atmel_mci *host,
>         return 0;
>  }
>
> -static void __exit atmci_cleanup_slot(struct atmel_mci_slot *slot,
> +static void atmci_cleanup_slot(struct atmel_mci_slot *slot,
>                 unsigned int id)
>  {
>         /* Debugfs stuff is cleaned up by mmc core */
--
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