[PATCH v2 01/12] env: Allow returning errors from hdelete_r()

[Tom Rini]

On Thu, Nov 05, 2020 at 10:33:37AM -0700, Simon Glass wrote:

> At present this function returns 1 on success and 0 on failure. But in
> the latter case it provides no indication of what went wrong.
> 
> If an attempt is made to delete a non-existent variable, the caller may
> want to ignore this error. This happens when setting a non-existent
> variable to "", for example.
> 
> Update the function to return 0 on success and a useful error code on
> failure. Add a function comment too.
> 
> Make sure that env_set() does not return an error if it is deleting a
> variable that doesn't exist. We could update env_set() to return useful
> error numbers also, but that is beyond the scope of this change.
> 
> Signed-off-by: Simon Glass <sjg at chromium.org>
> 
> wip

Applied to u-boot/next, thanks!

-- 
Tom
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