linux-kernel - [PATCH V2 2/3] staging: android: ion

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Message-Id: <1427985367-20099-3-git-send-email-tranmanphong@gmail.com>
Date:	Thu,  2 Apr 2015 21:36:06 +0700
From:	Phong Tran <tranmanphong@...il.com>
To:	gregkh@...uxfoundation.org, arve@...roid.com,
	riandrews@...roid.com, dan.carpenter@...cle.com
Cc:	devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org,
	Phong Tran <tranmanphong@...il.com>
Subject: [PATCH V2 2/3] staging: android: ion_test: unregister the misc device

Add the remove() method for deregister from misc device
when it's unloaded.

Signed-off-by: Phong Tran <tranmanphong@...il.com>
---
 drivers/staging/android/ion/ion_test.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/drivers/staging/android/ion/ion_test.c b/drivers/staging/android/ion/ion_test.c
index 3bc461c..d6a9653 100644
--- a/drivers/staging/android/ion/ion_test.c
+++ b/drivers/staging/android/ion/ion_test.c
@@ -261,7 +261,19 @@ static int __init ion_test_probe(struct platform_device *pdev)
 	return 0;
 }
 
+static int ion_test_remove(struct platform_device *pdev)
+{
+	struct ion_test_device *testdev;
+
+	testdev = platform_get_drvdata(pdev);
+	if (!testdev)
+		return -ENODATA;
+
+	return  misc_deregister(&testdev->misc);
+}
+
 static struct platform_driver ion_test_platform_driver = {
+	.remove = ion_test_remove,
 	.driver = {
 		.name = "ion-test",
 	},
-- 
2.1.0

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