From 7ba7db27d18d141973ad7eaf1f339218d81a31a4 Mon Sep 17 00:00:00 2001
From: Stefan Wahren <stefan.wahren@i2se.com>
Date: Sat, 13 Oct 2018 20:51:23 +0200
Subject: [PATCH] staging: vchiq_arm: Fix platform device
 unregistration

In error case platform_device_register_data would return an ERR_PTR
instead of NULL. So we better check this before unregistration.

Fixes: 37b7b3087a2f ("staging/vc04_services: Register a platform device for the camera driver.")
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
---
 drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
+++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
@@ -3258,7 +3258,8 @@ failed_platform_init:
 
 static int vchiq_remove(struct platform_device *pdev)
 {
-	platform_device_unregister(bcm2835_camera);
+	if (!IS_ERR(bcm2835_camera))
+		platform_device_unregister(bcm2835_camera);
 	vchiq_debugfs_deinit();
 	device_destroy(vchiq_class, vchiq_devid);
 	cdev_del(&vchiq_cdev);
