tree b8333ec100b2b3f66483278976fbf6df0dbf6d2e
parent 6e8beb020d5c40651fafd5c8073dea120291dfb5
author Masahiro Yamada <masahiroy@kernel.org> 1608401922 +0900
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1609325489 +0100

kconfig: fix return value of do_error_if()

[ Upstream commit 135b4957eac43af2aedf8e2a277b9540f33c2558 ]

$(error-if,...) is expanded to an empty string. Currently, it relies on
eval_clause() returning xstrdup("") when all attempts for expansion fail,
but the correct implementation is to make do_error_if() return xstrdup("").

Fixes: 1d6272e6fe43 ("kconfig: add 'info', 'warning-if', and 'error-if' built-in functions")
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>