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staging: wilc1000: bug fix on memory free

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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 committed by Greg Kroah-Hartman
parent 03efae328d
commit 608b0515b7
1 changed files with 1 additions and 0 deletions
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drivers/staging/wilc1000/wilc_wlan.c
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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);