[U-Boot] [PATCH] memmove_wd: Allow overlapping memory area

[Wolfgang Denk]

Dear Alexander Stein,

In message <1279701826-20083-1-git-send-email-alexander.stein at systec-electronic.com> you wrote:
> Signed-off-by: Alexander Stein <alexander.stein at systec-electronic.com>
> ---
>  common/image.c |   11 ++++++++---
>  1 files changed, 8 insertions(+), 3 deletions(-)

Why would this be needed?  Do you have an error scenario?

> +		if (to <= from)
> +		{
> +			memmove (to, from, tail);
> +			to += tail;
> +			from += tail;
> +		} else {
> +			memmove (to + len - tail, from + len - tail, tail);

In which way is this supposed to allow overlapping memory areas?

Best regards,

Wolfgang Denk

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