staging: wilc1000: bug fix on memory free

Set tx_buffer to NULL not to free again the memory that is already freed,
which could cause system crash when device is failed.

Signed-off-by: Glen Lee <glen.lee@atmel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Glen Lee 2015-12-21 14:18:50 +09:00 коммит произвёл Greg Kroah-Hartman
Родитель 03efae328d
Коммит 608b0515b7
1 изменённых файлов: 1 добавлений и 0 удалений

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@ -1374,6 +1374,7 @@ void wilc_wlan_cleanup(struct net_device *dev)
kfree(wilc->rx_buffer);
wilc->rx_buffer = NULL;
kfree(wilc->tx_buffer);
wilc->tx_buffer = NULL;
acquire_bus(wilc, ACQUIRE_AND_WAKEUP);