linux-kernel - Re: [PATCH] ARM:S3C24XX: Fix a wrong dependency in Kconfig which leads to a compile time error

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Message-ID: <20090921130000.GW24720@trinity.fluff.org>
Date:	Mon, 21 Sep 2009 14:00:00 +0100
From:	Ben Dooks <ben-linux@...ff.org>
To:	Shine Liu <shinel@...mail.com>
Cc:	ben-linux@...ff.org, linux-arm-kernel@...ts.arm.linux.org.uk,
	inux-arm-kernel@...ts.infradead.org, linux@....linux.org.uk,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ARM:S3C24XX: Fix a wrong dependency in Kconfig which leads to a compile time error

On Mon, Sep 21, 2009 at 03:52:12PM +0800, Shine Liu wrote:
> Hi all,
> 
> There's a small mistake in arch/arm/plat-s3c24xx/Kconfig leads to a
> compile time error when compiling kernel for S3C24XX mach:
> 
>   LD      .tmp_vmlinux1
> arch/arm/mach-s3c2440/built-in.o: In function `mini2440_map_io':
> mach-mini2440.c:(.init.text+0x4a0): undefined reference to `s3c_device_nand'
> arch/arm/mach-s3c2440/built-in.o:(.init.data+0x78c): undefined reference to `s3c_device_nand'
> arch/arm/plat-s3c24xx/built-in.o: In function `s3c244x_map_io':
> common-smdk.c:(.init.text+0x8e4): undefined reference to `s3c_device_nand'
> arch/arm/plat-s3c24xx/built-in.o: In function `smdk_machine_init':
> common-smdk.c:(.init.text+0xe44): undefined reference to `s3c_device_nand'
> arch/arm/plat-s3c24xx/built-in.o:(.init.data+0x18c): undefined reference to `s3c_device_nand'
> make: *** [.tmp_vmlinux1] Error 1
> 
> The bug was introduced by the patch:
> http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=db616eb67604242c11bfbb331bb143bfe4a2e386
> 
> Both kernel 2.6.31 and latest linux-next (next-20090918) has the defect.
> The following patch will fixed this bug.

Hi, thankyou for the great bug report but this is already fixed in
a set sent to RMK.

> Signed-off-by: Shine Liu <shinel@...mail.com>
> Signed-off-by: Shine Liu <liuxian@...flag-linux.com>
> ----------------------------------------------------
> 
> --- a/arch/arm/plat-s3c24xx/Kconfig	2009-09-21 15:09:59.000000000 +0800
> +++ b/arch/arm/plat-s3c24xx/Kconfig	2009-09-21 15:10:09.000000000 +0800
> @@ -10,7 +10,7 @@
>  	default y
>  	select NO_IOPORT
>  	select ARCH_REQUIRE_GPIOLIB
> -	select S3C_DEVICE_NAND
> +	select S3C_DEV_NAND
>  	help
>  	  Base platform code for any Samsung S3C24XX device

The best solution (although it does touch a number of Kconfig files)
is to ensure each machine that requires the s3c_device_nand defines
a select in their machine Kconfig.

for example:

config MACH_OSIRIS
	....
	select S3C_DEV_NAND
	....

-- 
Ben

Q:      What's a light-year?
A:      One-third less calories than a regular year.

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