[PATCH i-g-t v3 1/2] lib/igt_chamelium: check drmModeGetConnector() before using

[Luca Coelho <luciano.coelho@intel.com>]

The drmModeGetConnector() function can return NULL in some cases, so
we need to check the return value before accessing it.  This is not
being checked in wait_for_connected_state(), so fix that.

Cc: Mark Yacoub <markyacoub@chromium.org>
Cc: Manasi Navare <navaremanasi@chromium.org>
Cc: Kamil Konieczny <kamil.konieczny@linux.intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
---
 lib/igt_chamelium.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/lib/igt_chamelium.c b/lib/igt_chamelium.c
index 016d5356630c..620fbbf7d94f 100644
--- a/lib/igt_chamelium.c
+++ b/lib/igt_chamelium.c
@@ -524,6 +524,11 @@ static bool wait_for_connected_state(int drm_fd,
 			drmModeConnector *connector =
 				drmModeGetConnector(drm_fd, connectors[i]);
 
+			if (!connector) {
+				connected = false;
+				break;
+			}
+
 			connected = connector->connection == DRM_MODE_CONNECTED;
 
 			drmModeFreeConnector(connector);
-- 
2.39.2