[PATCH i-g-t 5/7] lib/igt_kms.c: refactor parse_path_connector

[Kunal Joshi <kunal1.joshi@intel.com>]

Use strdup() to make a copy of connector_path
before passing it to strtok(), so the original
string remains unmodified

Signed-off-by: Kunal Joshi <kunal1.joshi@intel.com>
---
 lib/igt_kms.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/lib/igt_kms.c b/lib/igt_kms.c
index 96da33a48..3d2a88b76 100644
--- a/lib/igt_kms.c
+++ b/lib/igt_kms.c
@@ -6670,10 +6670,10 @@ static int parse_path_connector(char *connector_path)
 {
 	int connector_id;
 	char *encoder;
+	char *connector_path_copy = strdup(connector_path);
 
-	encoder = strtok(connector_path, ":");
+	encoder = strtok(connector_path_copy, ":");
 	igt_assert_f(!strcmp(encoder, "mst"), "PATH connector property expected to have 'mst'\n");
-
 	connector_id = atoi(strtok(NULL, "-"));
 
 	return connector_id;
@@ -6688,13 +6688,11 @@ static int parse_path_connector(char *connector_path)
 int igt_get_dp_mst_connector_id(igt_output_t *output)
 {
 	int connector_id;
-	char *connector_path;
 
 	if (!igt_check_output_is_dp_mst(output))
 		return -EINVAL;
 
-	connector_path = output->config.connector_path;
-	connector_id = parse_path_connector(connector_path);
+	connector_id = parse_path_connector(output->config.connector_path);
 
 	return connector_id;
 }
-- 
2.43.0