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igb: resolve panic on shutdown when SR-IOV is enabled 

The setup_rctl call was making a call into the ring structure after it had
been freed.  This was causing a panic on shutdown.  This call wasn't
necessary since it is possible to get the needed index from
adapter->vfs_allocated_count.

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>
This commit is contained in:
Alexander Duyck 2009-05-06 16:43:48 -07:00 committed by David S. Miller
parent a860820dce
commit 77a22941f9
1 changed files with 5 additions and 7 deletions
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12
drivers/net/igb/igb_main.c
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@ -2006,7 +2006,7 @@ static void igb_setup_rctl(struct igb_adapter *adapter)
struct e1000_hw *hw = &adapter->hw;
u32 rctl;
u32 srrctl = 0;
int i, j;
int i;
rctl = rd32(E1000_RCTL);
@ -2071,8 +2071,6 @@ static void igb_setup_rctl(struct igb_adapter *adapter)
if (adapter->vfs_allocated_count) {
u32 vmolr;
j = adapter->rx_ring[0].reg_idx;
/* set all queue drop enable bits */
wr32(E1000_QDE, ALL_QUEUES);
srrctl |= E1000_SRRCTL_DROP_EN;
@ -2080,16 +2078,16 @@ static void igb_setup_rctl(struct igb_adapter *adapter)
/* disable queue 0 to prevent tail write w/o re-config */
wr32(E1000_RXDCTL(0), 0);
vmolr = rd32(E1000_VMOLR(j));
vmolr = rd32(E1000_VMOLR(adapter->vfs_allocated_count));
if (rctl & E1000_RCTL_LPE)
vmolr |= E1000_VMOLR_LPE;
if (adapter->num_rx_queues > 0)
if (adapter->num_rx_queues > 1)
vmolr |= E1000_VMOLR_RSSE;
wr32(E1000_VMOLR(j), vmolr);
wr32(E1000_VMOLR(adapter->vfs_allocated_count), vmolr);
}
for (i = 0; i < adapter->num_rx_queues; i++) {
j = adapter->rx_ring[i].reg_idx;
int j = adapter->rx_ring[i].reg_idx;
wr32(E1000_SRRCTL(j), srrctl);
}