[U-Boot] cmd_mem: cleanups, catch bad usage

[Tom Rini]

On Wed, Apr 01, 2015 at 01:50:41PM +0200, Pavel Machek wrote:

> Currently, memtest will silently accept bad data. Perform error
> checking on user intput.
> 
> Signed-off-by: Pavel Machek <pavel at denx.de>
> 
> diff --git a/common/cmd_mem.c b/common/cmd_mem.c
> index bfca59e..e6623b0 100644

Applied to u-boot/master, thanks!

-- 
Tom
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