From e4645c618591e1039fb07fc701075d2c801f2ea2 Mon Sep 17 00:00:00 2001
From: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Date: Wed, 10 Mar 2021 12:56:07 +0200
Subject: images: FIT: Support empty fit_conf_prefix

If fit_conf_prefix is unset, "conf-" is used as a default prefix. This
also applies if fit_conf_prefix is set but null. Support null
fit_conf_prefix.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
---
 images/FIT.sh | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/images/FIT.sh b/images/FIT.sh
index 043e563..a2c9493 100644
--- a/images/FIT.sh
+++ b/images/FIT.sh
@@ -1,6 +1,8 @@
 # SPDX-License-Identifier: GPL-2.0+
 
-fit_conf_prefix=${fit_conf_prefix:-conf-}
+if [ -z ${fit_conf_prefix+x} ] ; then
+	fit_conf_prefix="conf-"
+fi
 
 make_FIT_image() {
 	local kernel_compression
-- 
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