[U-Boot] [PATCH] fw_setenv: avoid writing environment when nothing has changed

[Rasmus Villemoes]

On 2018-09-05 21:22, Rasmus Villemoes wrote:
> In the case where one deletes an already-non-existing variable, or sets
> a variable to the value it already has, there is no point in writing the
> environment back, thus reducing wear on the underlying storage
> device.

ping