linux-kernel - Re: [PATCH] gpmc, EXPORT_SYMBOLS, west bridge related

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Date:	Tue, 7 Sep 2010 16:58:00 -0700
From:	Greg KH <greg@...ah.com>
To:	David Cross <david.cross@...ress.com>
Cc:	tony@...mide.com, linux-kernel@...r.kernel.org,
	linux-omap@...r.kernel.org
Subject: Re: [PATCH] gpmc, EXPORT_SYMBOLS, west bridge related

On Tue, Sep 07, 2010 at 12:26:47PM -0700, David Cross wrote:
> This patch exports some of the gpmc driver functions in OMAP3. The purpose behind this patch 
> is to allow device drivers compiled as loadable modules to be interfaced to the GPMC. I am
> hoping that Tony is the correct maintainer and willing to ACK this change. Please let me know 
> if there are any issues or concerns with this patch.
> Thanks,
> David
> 
> Signed-off-by: David Cross <david.cross@...ress.com>
> 
> diff -uprN -X linux-next-vanilla/Documentation/dontdiff linux-next-vanilla/arch/arm/mach-omap2/gpmc.c linux-next-incl-sdk/arch/arm/mach-omap2/gpmc.c
> --- linux-next-vanilla/arch/arm/mach-omap2/gpmc.c	2010-08-31 19:32:51.000000000 -0700
> +++ linux-next-incl-sdk/arch/arm/mach-omap2/gpmc.c	2010-09-01 16:10:21.000000000 -0700
> @@ -133,6 +133,7 @@ void gpmc_cs_write_reg(int cs, int idx, 
>  	reg_addr = gpmc_base + GPMC_CS0_OFFSET + (cs * GPMC_CS_SIZE) + idx;
>  	__raw_writel(val, reg_addr);
>  }
> +EXPORT_SYMBOL(gpmc_cs_write_reg);

EXPORT_SYMBOL_GPL() perhaps?

What about platforms that don't have this symbol, how will the driver
build properly then?  Shouldn't something like this be in a arch-neutral
place in the kernel tree?

thanks,

greg k-h
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