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ixgbevf: Fix panics in the VF driver 

Fix panics in the VF driver that occur when you bring it down after
having already brought the PF down.

Signed-off-by: Greg Rose <gregory.v.rose@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Greg Rose 2010-01-22 22:47:18 +00:00 committed by David S. Miller
parent a9ee25a2b8
commit c0456c231a
1 changed files with 20 additions and 4 deletions
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24
drivers/net/ixgbevf/ixgbevf_main.c
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@ -1693,8 +1693,10 @@ static void ixgbevf_clean_rx_ring(struct ixgbevf_adapter *adapter,
unsigned long size;
unsigned int i;
/* Free all the Rx ring sk_buffs */
if (!rx_ring->rx_buffer_info)
return;
/* Free all the Rx ring sk_buffs */
for (i = 0; i < rx_ring->count; i++) {
struct ixgbevf_rx_buffer *rx_buffer_info;
@ -1751,6 +1753,9 @@ static void ixgbevf_clean_tx_ring(struct ixgbevf_adapter *adapter,
unsigned long size;
unsigned int i;
if (!tx_ring->tx_buffer_info)
return;
/* Free all the Tx ring sk_buffs */
for (i = 0; i < tx_ring->count; i++) {
@ -1843,12 +1848,24 @@ void ixgbevf_down(struct ixgbevf_adapter *adapter)
void ixgbevf_reinit_locked(struct ixgbevf_adapter *adapter)
{
struct ixgbe_hw *hw = &adapter->hw;
WARN_ON(in_interrupt());
while (test_and_set_bit(__IXGBEVF_RESETTING, &adapter->state))
msleep(1);
ixgbevf_down(adapter);
ixgbevf_up(adapter);
/*
* Check if PF is up before re-init. If not then skip until
* later when the PF is up and ready to service requests from
* the VF via mailbox. If the VF is up and running then the
* watchdog task will continue to schedule reset tasks until
* the PF is up and running.
*/
if (!hw->mac.ops.reset_hw(hw)) {
ixgbevf_down(adapter);
ixgbevf_up(adapter);
}
clear_bit(__IXGBEVF_RESETTING, &adapter->state);
}
@ -2423,7 +2440,6 @@ void ixgbevf_free_tx_resources(struct ixgbevf_adapter *adapter,
{
struct pci_dev *pdev = adapter->pdev;
ixgbevf_clean_tx_ring(adapter, tx_ring);
vfree(tx_ring->tx_buffer_info);