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| author | Alexander Duyck <alexander.h.duyck@intel.com> | 2009-05-21 13:06:56 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-05-21 17:19:09 -0700 |
| commit | 7e0e99ef43b1fab8caf0348e31704c7d15060ce0 (patch) | |
| tree | e9a09b5c73ab7d527f68d8dac43d081baa4f58aa /drivers/net/igb/igb_main.c | |
| parent | 0d63cbb535a9525445513389370d35b522a700f1 (diff) | |
| download | lwn-7e0e99ef43b1fab8caf0348e31704c7d15060ce0.tar.gz lwn-7e0e99ef43b1fab8caf0348e31704c7d15060ce0.zip | |
igb: do not re-register DCA requester on device reset
The current driver is re-registering the DCA requester after every reset.
Instead of doing this we should only be updating the on board DCA registers
and not unregistering/re-registering our requester.
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/igb/igb_main.c')
| -rw-r--r-- | drivers/net/igb/igb_main.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/drivers/net/igb/igb_main.c b/drivers/net/igb/igb_main.c index ffd731539997..2ec98091948b 100644 --- a/drivers/net/igb/igb_main.c +++ b/drivers/net/igb/igb_main.c @@ -996,6 +996,11 @@ void igb_down(struct igb_adapter *adapter) igb_reset(adapter); igb_clean_all_tx_rings(adapter); igb_clean_all_rx_rings(adapter); +#ifdef CONFIG_IGB_DCA + + /* since we reset the hardware DCA settings were cleared */ + igb_setup_dca(adapter); +#endif } void igb_reinit_locked(struct igb_adapter *adapter) @@ -1457,9 +1462,6 @@ static int __devinit igb_probe(struct pci_dev *pdev, if (dca_add_requester(&pdev->dev) == 0) { adapter->flags |= IGB_FLAG_DCA_ENABLED; dev_info(&pdev->dev, "DCA enabled\n"); - /* Always use CB2 mode, difference is masked - * in the CB driver. */ - wr32(E1000_DCA_CTRL, E1000_DCA_CTRL_DCA_MODE_CB2); igb_setup_dca(adapter); } #endif @@ -3771,11 +3773,15 @@ static void igb_update_tx_dca(struct igb_ring *tx_ring) static void igb_setup_dca(struct igb_adapter *adapter) { + struct e1000_hw *hw = &adapter->hw; int i; if (!(adapter->flags & IGB_FLAG_DCA_ENABLED)) return; + /* Always use CB2 mode, difference is masked in the CB driver. */ + wr32(E1000_DCA_CTRL, E1000_DCA_CTRL_DCA_MODE_CB2); + for (i = 0; i < adapter->num_tx_queues; i++) { adapter->tx_ring[i].cpu = -1; igb_update_tx_dca(&adapter->tx_ring[i]); |