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

From: Phong Tran
Date: Wed Apr 01 2015 - 13:39:02 EST


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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