diff options
Diffstat (limited to 'drivers/net/e1000/e1000_main.c')
| -rw-r--r-- | drivers/net/e1000/e1000_main.c | 28 |
1 files changed, 24 insertions, 4 deletions
diff --git a/drivers/net/e1000/e1000_main.c b/drivers/net/e1000/e1000_main.c index 5c61b921ca7..93b861d032b 100644 --- a/drivers/net/e1000/e1000_main.c +++ b/drivers/net/e1000/e1000_main.c @@ -577,12 +577,30 @@ out: void e1000_down(struct e1000_adapter *adapter) { + struct e1000_hw *hw = &adapter->hw; struct net_device *netdev = adapter->netdev; + u32 rctl, tctl; /* signal that we're down so the interrupt handler does not * reschedule our watchdog timer */ set_bit(__E1000_DOWN, &adapter->flags); + /* disable receives in the hardware */ + rctl = er32(RCTL); + ew32(RCTL, rctl & ~E1000_RCTL_EN); + /* flush and sleep below */ + + /* can be netif_tx_disable when NETIF_F_LLTX is removed */ + netif_stop_queue(netdev); + + /* disable transmits in the hardware */ + tctl = er32(TCTL); + tctl &= ~E1000_TCTL_EN; + ew32(TCTL, tctl); + /* flush both disables and wait for them to finish */ + E1000_WRITE_FLUSH(); + msleep(10); + napi_disable(&adapter->napi); e1000_irq_disable(adapter); @@ -595,7 +613,6 @@ void e1000_down(struct e1000_adapter *adapter) adapter->link_speed = 0; adapter->link_duplex = 0; netif_carrier_off(netdev); - netif_stop_queue(netdev); e1000_reset(adapter); e1000_clean_all_tx_rings(adapter); @@ -3744,10 +3761,12 @@ static irqreturn_t e1000_intr(int irq, void *data) adapter->total_rx_bytes = 0; adapter->total_rx_packets = 0; __napi_schedule(&adapter->napi); - } else + } else { /* this really should not happen! if it does it is basically a * bug, but not a hard error, so enable ints and continue */ - e1000_irq_enable(adapter); + if (!test_bit(__E1000_DOWN, &adapter->flags)) + e1000_irq_enable(adapter); + } return IRQ_HANDLED; } @@ -3777,7 +3796,8 @@ static int e1000_clean(struct napi_struct *napi, int budget) if (likely(adapter->itr_setting & 3)) e1000_set_itr(adapter); napi_complete(napi); - e1000_irq_enable(adapter); + if (!test_bit(__E1000_DOWN, &adapter->flags)) + e1000_irq_enable(adapter); } return work_done; |