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powerpc/pci: Fix regression in powerpc MSI-X

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Patch f598282f51 exposed a problem in
powerpc MSI-X functionality, making network interfaces such as ixgbe
and cxgb3 stop to work when MSI-X is enabled. RX interrupts were not
being generated.

The problem was caused because MSI irq was not being effectively
unmasked after device initialization.

Signed-off-by: Andre Detsch <adetsch@br.ibm.com>
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Andre Detsch
2009-11-04 13:03:19 -02:00
committed by Benjamin Herrenschmidt
parent 978d7eb31d
commit 8435b027b8
2 changed files with 9 additions and 2 deletions
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2
arch/powerpc/platforms/pseries/msi.c
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@@ -432,8 +432,6 @@ static int rtas_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type)
/* Read config space back so we can restore after reset */
read_msi_msg(virq, &msg);
entry->msg = msg;
unmask_msi_irq(virq);
}
return 0;