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mwifiex: fix memory leak issue when driver unload

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After unregister_netdevice() call the request is queued and
reg_state is changed to NETREG_UNREGISTERING.
As we check for NETREG_UNREGISTERED state, free_netdev() never
gets executed causing memory leak.

Initialize "dev->destructor" to free_netdev() to free device
data after unregistration.

Cc: <stable@vger.kernel.org>
Reported-by: Daniel Drake <dsd@laptop.org>
Tested-by: Daniel Drake <dsd@laptop.org>
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Amitkumar Karwar 2013-05-06 19:46:54 -07:00 committed by John W. Linville
parent 48795424ac
commit f16fdc9d2d
2 changed files with 1 additions and 3 deletions
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3
drivers/net/wireless/mwifiex/cfg80211.c
View file

@ -2234,9 +2234,6 @@ int mwifiex_del_virtual_intf(struct wiphy *wiphy, struct wireless_dev *wdev)
if (wdev->netdev->reg_state == NETREG_REGISTERED)
unregister_netdevice(wdev->netdev);
if (wdev->netdev->reg_state == NETREG_UNREGISTERED)
free_netdev(wdev->netdev);
/* Clear the priv in adapter */
priv->netdev = NULL;

1
drivers/net/wireless/mwifiex/main.c
View file

@ -655,6 +655,7 @@ void mwifiex_init_priv_params(struct mwifiex_private *priv,
struct net_device *dev)
{
dev->netdev_ops = &mwifiex_netdev_ops;
dev->destructor = free_netdev;
/* Initialize private structure */
priv->current_key_index = 0;
priv->media_connected = false;