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| author | Alexander Duyck <alexander.h.duyck@intel.com> | 2012-07-16 23:44:48 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-07-17 02:56:53 -0700 |
| commit | 10cc1bdd5ef65f60f570b594c4c066d763c128fb (patch) | |
| tree | b0732c876912dfab1e4570c8e846ad6fa0c9fbeb | |
| parent | ef764a13b8f4bc4b532a51bc37c35b3974831b29 (diff) | |
| download | mm-10cc1bdd5ef65f60f570b594c4c066d763c128fb.tar.gz | |
ixgbevf: Fix panic when loading driver
This patch addresses a kernel panic seen when setting up the interface.
Specifically we see a NULL pointer dereference on the Tx descriptor cleanup
path when enabling interrupts. This change corrects that so it cannot
occur.
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Acked-by: Greg Rose <gregory.v.rose@intel.com>
Tested-by: Sibai Li <sibai.li@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c index 8b304a43a22d8c..41e32257a4e873 100644 --- a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c +++ b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c @@ -201,6 +201,9 @@ static bool ixgbevf_clean_tx_irq(struct ixgbevf_adapter *adapter, unsigned int i, eop, count = 0; unsigned int total_bytes = 0, total_packets = 0; + if (test_bit(__IXGBEVF_DOWN, &adapter->state)) + return true; + i = tx_ring->next_to_clean; eop = tx_ring->tx_buffer_info[i].next_to_watch; eop_desc = IXGBE_TX_DESC_ADV(*tx_ring, eop); |