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igb: Fix Tx hangs seen when loading igb with max_vfs > 7.

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Check the value of max_vfs at the time of assignment of vfs_allocated_count.

The previous check in igb_probe_vfs was too late as by that time the rx/tx
rings were initialized with the wrong offset.

Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com>
Tested-by: Jeff Pieper <jeffrey.e.pieper@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:
Emil Tantilov 2010-07-01 13:38:40 +00:00 committed by David S. Miller
parent 5fa8517f03
commit c0f2276f36
1 changed files with 1 additions and 4 deletions
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5
drivers/net/igb/igb_main.c
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@ -2091,9 +2091,6 @@ static void __devinit igb_probe_vfs(struct igb_adapter * adapter)
#ifdef CONFIG_PCI_IOV
struct pci_dev *pdev = adapter->pdev;
if (adapter->vfs_allocated_count > 7)
adapter->vfs_allocated_count = 7;
if (adapter->vfs_allocated_count) {
adapter->vf_data = kcalloc(adapter->vfs_allocated_count,
sizeof(struct vf_data_storage),
@ -2258,7 +2255,7 @@ static int __devinit igb_sw_init(struct igb_adapter *adapter)
#ifdef CONFIG_PCI_IOV
if (hw->mac.type == e1000_82576)
adapter->vfs_allocated_count = max_vfs;
adapter->vfs_allocated_count = (max_vfs > 7) ? 7 : max_vfs;
#endif /* CONFIG_PCI_IOV */
adapter->rss_queues = min_t(u32, IGB_MAX_RX_QUEUES, num_online_cpus());