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tg3: Fix INTx fallback when MSI fails

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tg3: Fix INTx fallback when MSI fails

MSI setup changes the value of irq_vec in struct tg3 *tp.
This attribute must be taken into account and restored before
we try to do a new request_irq for INTx fallback.

In powerpc, the original code was leading to an EINVAL return within
request_irq, because the driver was trying to use the disabled MSI
virtual irq number instead of tp->pdev->irq.

Signed-off-by: Andre Detsch <[email protected]>
Acked-by: Michael Chan <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Andre Detsch 2010-04-26 07:27:07 +00:00 • committed by David S. Miller
commit dc8bf1b1a6
1 changed files with 1 additions and 0 deletions
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1
drivers/net/tg3.c
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@ -8633,6 +8633,7 @@ static int tg3_test_msi(struct tg3 *tp)
pci_disable_msi(tp->pdev);
tp->tg3_flags2 &= ~TG3_FLG2_USING_MSI;
tp->napi[0].irq_vec = tp->pdev->irq;
err = tg3_request_irq(tp, 0);
if (err)