linux-kernel - Re: [PATCH 2/2] memstick: add support for legacy memorysticks

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Message-ID: <CAMuHMdW7zfM1CxkXTCq2=ErkaAAxGVFyQSZdH3jwvUXr_8oOsg@mail.gmail.com>
Date:	Sat, 29 Sep 2012 19:20:41 +0200
From:	Geert Uytterhoeven <geert@...ux-m68k.org>
To:	Maxim Levitsky <maximlevitsky@...il.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Alex Dubov <oakad@...oo.com>, linux-kernel@...r.kernel.org,
	Tejun Heo <tj@...nel.org>,
	Linux-Next <linux-next@...r.kernel.org>
Subject: Re: [PATCH 2/2] memstick: add support for legacy memorysticks

On Wed, Sep 26, 2012 at 11:49 AM, Maxim Levitsky
<maximlevitsky@...il.com> wrote:
> --- /dev/null
> +++ b/drivers/memstick/core/ms_block.c

> +#define pr_fmt(fmt) DRIVER_NAME ": " fmt
> +
> +#include <linux/module.h>
> +#include <linux/blkdev.h>
> +#include <linux/memstick.h>
> +#include <linux/idr.h>
> +#include <linux/hdreg.h>
> +#include <linux/delay.h>
> +#include <linux/slab.h>
> +#include <linux/random.h>
> +#include <linux/bitmap.h>
> +#include <linux/scatterlist.h>
> +#include <linux/jiffies.h>
> +#include <linux/workqueue.h>
> +#include <linux/mutex.h>
> +#include "ms_block.h"

http://kisskb.ellerman.id.au/kisskb/buildresult/7280352/
arch/m68k/include/asm/hardirq.h:23:20: error: expected ')' before 'DRIVER_NAME'
make[4]: *** [drivers/memstick/core/ms_block.o] Error 1

The reason for this is that pr_fmt() references DRIVER_NAME and is defined
before the first include, while DRIVER_NAME is only defined in ms_block.h,
which is the last included file. If any subsequent include file uses pr_fmt()
(e.g. the call to pr_crit() in arch/m68k/include/asm/hardirq.h), this
causes a build
failure.

I suggest moving the DRIVER_NAME define to ms_block.c.
Cfr. memstick.c and mspro_block.c, who already have their own definition.

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds
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