tag-linux-tegra: Skip existing tags

Sometimes an error occurs when writing tags, or tags have to be redone.
In order to simply that, skip existing tags, so that only a subset can
be redone.

Signed-off-by: Thierry Reding <treding@nvidia.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/tag-linux-tegra.sh b/tag-linux-tegra.sh
index f071b5a..060384f 100755
--- a/tag-linux-tegra.sh
+++ b/tag-linux-tegra.sh
@@ -25,5 +25,10 @@ done
 for branch in ${branches}; do
 	tag=tegra-${branch//\//-}
 
+	if git rev-parse --quiet --verify $tag > /dev/null; then
+		echo "tag $tag already exists, skipping"
+		continue
+	fi
+
 	git tag -s $tag $branch
 done