linux-kernel - [PATCH 3.19.y-ckt 090/251] NFC: st21nfcb: Remove inappropriate kfree on a devm

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Message-Id: <1437008972-9140-91-git-send-email-kamal@canonical.com>
Date:	Wed, 15 Jul 2015 18:06:51 -0700
From:	Kamal Mostafa <kamal@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	Firo Yang <firogm@...il.com>, Samuel Ortiz <sameo@...ux.intel.com>,
	Kamal Mostafa <kamal@...onical.com>
Subject: [PATCH 3.19.y-ckt 090/251] NFC: st21nfcb: Remove inappropriate kfree on a devm_kzalloc pointer

3.19.8-ckt4 -stable review patch.  If anyone has any objections, please let me know.

------------------

From: Firo Yang <firogm@...il.com>

commit 38bd83f04c5e9695011dc5c294e0c4e6a9f9052d upstream.

Since ndev->driver_data is allocated by devm_kzalloc(), we do not
need the inappropriate kfree to free it in driver's remove function.
Freeing will trigger when driver unloads.

Acked-by: Christophe Ricard <christophe-h.ricard@...com>
Signed-off-by: Firo Yang <firogm@...il.com>
Signed-off-by: Samuel Ortiz <sameo@...ux.intel.com>
Signed-off-by: Kamal Mostafa <kamal@...onical.com>
---
 drivers/nfc/st21nfcb/st21nfcb.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/drivers/nfc/st21nfcb/st21nfcb.c b/drivers/nfc/st21nfcb/st21nfcb.c
index ea63d58..28b3914 100644
--- a/drivers/nfc/st21nfcb/st21nfcb.c
+++ b/drivers/nfc/st21nfcb/st21nfcb.c
@@ -122,11 +122,8 @@ EXPORT_SYMBOL_GPL(st21nfcb_nci_probe);
 
 void st21nfcb_nci_remove(struct nci_dev *ndev)
 {
-	struct st21nfcb_nci_info *info = nci_get_drvdata(ndev);
-
 	nci_unregister_device(ndev);
 	nci_free_device(ndev);
-	kfree(info);
 }
 EXPORT_SYMBOL_GPL(st21nfcb_nci_remove);
 
-- 
1.9.1

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