tree b4b6f06e614e702c6283b2e57d4c7ea9128086e5
parent 48f58a59737739b0f96ceba9f7873178c6d917bf
author Simon Goldschmidt <sgoldschmidt@de.pepperl-fuchs.com> 1517381808 +0100
committer Tom Rini <trini@konsulko.com> 1517442310 -0500

cmd: nvedit: env_get_f must check for env_get_char error codes

env_get_f calls env_get_char to load single characters from the
environment. However, the return value of env_get_char was not
checked for errors. Now if the env driver does not support the
.get_char call, env_get_f did not notice this and looped over the
whole size of the environment, calling env_get_char over 8000
times with the default settings, just to return an error in the
end.

Fix this by checking if env_get_char returns < 0.

Signed-off-by: Simon Goldschmidt <sgoldschmidt@de.pepperl-fuchs.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>