From mboxrd@z Thu Jan  1 00:00:00 1970
From: Marek Vasut <marex@denx.de>
Date: Fri, 5 Jun 2015 15:18:49 +0200
Subject: [U-Boot] [PATCH v2 1/3] ARM: cache: add an empty stub function
	for invalidate/flush dcache
In-Reply-To: <1433490452-26402-1-git-send-email-josh.wu@atmel.com>
References: <1433490452-26402-1-git-send-email-josh.wu@atmel.com>
Message-ID: <201506051518.49587.marex@denx.de>
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To: u-boot@lists.denx.de

On Friday, June 05, 2015 at 09:47:30 AM, Josh Wu wrote:
> Since some driver like ohci, lcd used dcache functions. But some ARM
> cpu don't implement the invalidate_dcache_range()/flush_dcache_range()
> functions.
> 
> To avoid compiling errors this patch adds an weak empty stub function
> for all ARM cpu.
> 
> And each cpu can implement its own implementation. If not implemented
> by default it will use an empty function.
> 
> Signed-off-by: Josh Wu <josh.wu@atmel.com>
> ---
> 
> Changes in v2: new added
> 
>  arch/arm/lib/cache.c | 9 +++++++++
>  1 file changed, 9 insertions(+)

So, why exactly can't this be entirely common code , but a CPU-specific
code ? :)

Best regards,
Marek Vasut