From da42268911c3fc9f591783e0c3cdd4511930612a Mon Sep 17 00:00:00 2001
From: Benjamin Berg <benjamin@sipsolutions.net>
Date: Thu, 24 Jul 2025 08:39:54 +0200
Subject: [PATCH] goodixmoc: fix crash in exit callback handler

If the button shield command cannot be executed due to an underlying
error then resp is NULL. Avoid the crash by adding the appropriate
check.

Closes: #694
---
 libfprint/drivers/goodixmoc/goodix.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/libfprint/drivers/goodixmoc/goodix.c b/libfprint/drivers/goodixmoc/goodix.c
index 33e137f4..659722ae 100644
--- a/libfprint/drivers/goodixmoc/goodix.c
+++ b/libfprint/drivers/goodixmoc/goodix.c
@@ -1483,9 +1483,7 @@ gx_fp_exit_cb (FpiDeviceGoodixMoc  *self,
                gxfp_cmd_response_t *resp,
                GError              *error)
 {
-
-
-  if (resp->result >= GX_FAILED)
+  if (resp && resp->result >= GX_FAILED)
     fp_dbg ("Setting power button shield failed, result: 0x%x", resp->result);
   self->is_power_button_shield_on = false;
   gx_fp_release_interface (self, error);