[PATCH 3/3] staging: android: ion_test: unregister the platform device

[Phong Tran <tranmanphong@xxxxxxxxx>]

The driver has to unregister from platform device when it's unloaded

Signed-off-by: Phong Tran <tranmanphong@xxxxxxxxx>
---
 drivers/staging/android/ion/ion_test.c | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/drivers/staging/android/ion/ion_test.c b/drivers/staging/android/ion/ion_test.c
index f36a35e..d2a236e 100644
--- a/drivers/staging/android/ion/ion_test.c
+++ b/drivers/staging/android/ion/ion_test.c
@@ -278,6 +278,7 @@ static int ion_test_remove(struct platform_device *pdev)
 	return ret;
 }
 
+static struct platform_device *ion_test_platform_device;
 static struct platform_driver ion_test_platform_driver = {
 	.remove = ion_test_remove,
 	.driver = {
@@ -287,13 +288,21 @@ static struct platform_driver ion_test_platform_driver = {
 
 static int __init ion_test_init(void)
 {
-	platform_device_register_simple("ion-test", -1, NULL, 0);
+	ion_test_platform_device = platform_device_register_simple("ion-test",
+				   -1, NULL, 0);
+
+	if (!ion_test_platform_device) {
+		pr_err("failed to register ion-test platform device\n");
+		return -ENODEV;
+	}
+
 	return platform_driver_probe(&ion_test_platform_driver, ion_test_probe);
 }
 
 static void __exit ion_test_exit(void)
 {
 	platform_driver_unregister(&ion_test_platform_driver);
+	platform_device_unregister(ion_test_platform_device);
 }
 
 module_init(ion_test_init);
-- 
2.1.0

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