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| author | Stefan Assmann <sassmann@kpanic.de> | 2015-07-10 15:01:12 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-10-22 14:49:33 -0700 |
| commit | 7207c3aea646f21bd7763641f98883a555e97147 (patch) | |
| tree | 97c562ce166fdc0754508dc37289a2b851b91429 | |
| parent | 75215f092c4ceba9533c23e3c82b7b1c080aad69 (diff) | |
| download | lwn-7207c3aea646f21bd7763641f98883a555e97147.tar.gz lwn-7207c3aea646f21bd7763641f98883a555e97147.zip | |
igb: do not re-init SR-IOV during probe
commit 6423fc34160939142d72ffeaa2db6408317f54df upstream.
During driver probing the following code path is triggered.
igb_probe
->igb_sw_init
->igb_probe_vfs
->igb_pci_enable_sriov
->igb_sriov_reinit
Doing the SR-IOV re-init is not necessary during probing since we're
starting from scratch. Here we can call igb_enable_sriov() right away.
Running igb_sriov_reinit() during igb_probe() also seems to cause
occasional packet loss on some onboard 82576 NICs. Reproduced on
Dell and HP servers with onboard 82576 NICs.
Example:
Intel Corporation 82576 Gigabit Network Connection [8086:10c9] (rev 01)
Subsystem: Dell Device [1028:0481]
Signed-off-by: Stefan Assmann <sassmann@kpanic.de>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Cc: Daniel J Blueman <daniel@numascale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/net/ethernet/intel/igb/igb_main.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c index 8d7b59689722..5bc9fca67957 100644 --- a/drivers/net/ethernet/intel/igb/igb_main.c +++ b/drivers/net/ethernet/intel/igb/igb_main.c @@ -2851,7 +2851,7 @@ static void igb_probe_vfs(struct igb_adapter *adapter) return; pci_sriov_set_totalvfs(pdev, 7); - igb_pci_enable_sriov(pdev, max_vfs); + igb_enable_sriov(pdev, max_vfs); #endif /* CONFIG_PCI_IOV */ } |