From 679e8a0f0ae3333e94b1d374d07775fce9066025 Mon Sep 17 00:00:00 2001 From: Andy Gospodarek Date: Thu, 18 Jun 2009 11:57:37 +0000 Subject: e1000e: stop unnecessary polling when using msi-x The last hunk of this commit: commit 12d04a3c12b420f23398b4d650127642469a60a6 Author: Alexander Duyck Date: Wed Mar 25 22:05:03 2009 +0000 e1000e: commonize tx cleanup routine to match e1000 & igb changed the logic for determining if we should call napi_complete or not at then end of a napi poll. If the NIC is using MSI-X with no work to do in ->poll, net_rx_action can just spin indefinitely on older kernels and for 2 jiffies on newer kernels since napi_complete is never called and budget isn't decremented. Discovered and verified while testing driver backport to an older kernel. Signed-off-by: Andy Gospodarek Acked-by: Alexander Duyck Signed-off-by: David S. Miller --- drivers/net/e1000e/netdev.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/net/e1000e') diff --git a/drivers/net/e1000e/netdev.c b/drivers/net/e1000e/netdev.c index 677f60490f6..679885a122b 100644 --- a/drivers/net/e1000e/netdev.c +++ b/drivers/net/e1000e/netdev.c @@ -1997,7 +1997,7 @@ static int e1000_clean(struct napi_struct *napi, int budget) struct e1000_adapter *adapter = container_of(napi, struct e1000_adapter, napi); struct e1000_hw *hw = &adapter->hw; struct net_device *poll_dev = adapter->netdev; - int tx_cleaned = 0, work_done = 0; + int tx_cleaned = 1, work_done = 0; adapter = netdev_priv(poll_dev); -- cgit v1.2.3 From c93b5a76d58656158d195a7df507ebc660010969 Mon Sep 17 00:00:00 2001 From: Mike Mason Date: Tue, 30 Jun 2009 12:45:53 +0000 Subject: e1000e: io_error_detected callback should return PCI_ERS_RESULT_DISCONNECT on permanent failure PCI drivers that implement the io_error_detected callback should return PCI_ERS_RESULT_DISCONNECT if the state passed in is pci_channel_io_perm_failure. This state is not checked in many of the network drivers. This patch fixes the omission in the e1000e driver. Signed-off-by: Mike Mason Signed-off-by: Jeff Kirsher Signed-off-by: David S. Miller --- drivers/net/e1000e/netdev.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers/net/e1000e') diff --git a/drivers/net/e1000e/netdev.c b/drivers/net/e1000e/netdev.c index 679885a122b..63415bb6f48 100644 --- a/drivers/net/e1000e/netdev.c +++ b/drivers/net/e1000e/netdev.c @@ -4785,6 +4785,9 @@ static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev, netif_device_detach(netdev); + if (state == pci_channel_io_perm_failure) + return PCI_ERS_RESULT_DISCONNECT; + if (netif_running(netdev)) e1000e_down(adapter); pci_disable_device(pdev); -- cgit v1.2.3