From 72cb59c7f5c384e13ad307b7342ad5c0f45757f7 Mon Sep 17 00:00:00 2001
From: popcornmix <popcornmix@gmail.com>
Date: Tue, 30 May 2017 13:35:18 +0100
Subject: [PATCH] With JUST_CHECK indicate when firmware is being downgraded

---
 rpi-update | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/rpi-update b/rpi-update
index 54b279e..22bc59e 100755
--- a/rpi-update
+++ b/rpi-update
@@ -415,8 +415,13 @@ else
 		exit 0
 	fi
 	if [[ ${JUST_CHECK} -ne 0 ]]; then
-		echo " *** Firmware update required. New commits available:"
-		DIFF_API=${REPO_URI/github.com/api.github.com\/repos}/compare/${LOCAL_HASH}...${FW_REV}
+		if $(compare_hashes ${LOCAL_HASH} lt ${FW_REV}); then
+			echo " *** Firmware update required. New commits available:"
+			DIFF_API=${REPO_URI/github.com/api.github.com\/repos}/compare/${LOCAL_HASH}...${FW_REV}
+		else
+			echo " *** Firmware downgrade requested. Commits to drop:"
+			DIFF_API=${REPO_URI/github.com/api.github.com\/repos}/compare/${FW_REV}...${LOCAL_HASH}
+		fi
 		SEPARATOR="======================================================"
 		eval curl -Ls ${GITHUB_AUTH_PARAM} ${DIFF_API} | awk -v SEPARATOR="${SEPARATOR}" -F\" ' { if ($2 == "commits") {commits=1} if (commits && $2 == "message") {print SEPARATOR "\nCommit: " $4} }' | sed 's/\\n\\n/\nCommit:\ /g'
 		exit 2