From: Carolyn Wyborny Date: Tue, 30 Apr 2013 00:21:32 +0000 (+0000) Subject: igb: Fix possible panic caused by Rx traffic arrival while interface is down X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=41f149a285da21529bc9a0bad323df53b2f17b16;p=linux-beck.git igb: Fix possible panic caused by Rx traffic arrival while interface is down This patch reorders disabling napi and irqs during igb_down. This is done to avoid possible panic's found in other Intel drivers when Rx traffic arrives while interface is going down. Signed-off-by: Carolyn Wyborny Tested-by: Aaron Brown Signed-off-by: Jeff Kirsher --- diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c index 2c8f7e04b02b..6a0c1b66ce54 100644 --- a/drivers/net/ethernet/intel/igb/igb_main.c +++ b/drivers/net/ethernet/intel/igb/igb_main.c @@ -1667,10 +1667,13 @@ void igb_down(struct igb_adapter *adapter) wrfl(); msleep(10); - for (i = 0; i < adapter->num_q_vectors; i++) + igb_irq_disable(adapter); + + for (i = 0; i < adapter->num_q_vectors; i++) { + napi_synchronize(&(adapter->q_vector[i]->napi)); napi_disable(&(adapter->q_vector[i]->napi)); + } - igb_irq_disable(adapter); del_timer_sync(&adapter->watchdog_timer); del_timer_sync(&adapter->phy_info_timer);