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irqchip: armada-370-xp: implement the ->check_device() msi_chip operation

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Until now, we were leaving the ->check_device() msi_chip operation
empty, which leads the PCI core to believe that we support both MSI
and MSI-X. In fact, we do not support MSI-X, so we have to tell this
to the PCI core by providing an implementation of this operation.

Fixes: 31f614edb726fcc4d5aa0f2895fbdec9b04a3ca4 ('irqchip: armada-370-xp: implement MSI support')
Cc: <stable@vger.kernel.org> # v3.13+
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Link: https://lkml.kernel.org/r/1397823593-1932-3-git-send-email-thomas.petazzoni@free-electrons.com
Tested-by: Neil Greatorex <neil@fatboyfat.co.uk>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
This commit is contained in:
Thomas Petazzoni 2014-04-18 14:19:48 +02:00 committed by Jason Cooper
parent da343fc776
commit 830cbe4b7a
1 changed files with 10 additions and 0 deletions
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10
drivers/irqchip/irq-armada-370-xp.c
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@ -162,6 +162,15 @@ static void armada_370_xp_teardown_msi_irq(struct msi_chip *chip,
armada_370_xp_free_msi(d->hwirq);
}
static int armada_370_xp_check_msi_device(struct msi_chip *chip, struct pci_dev *dev,
int nvec, int type)
{
/* We support MSI, but not MSI-X */
if (type == PCI_CAP_ID_MSI)
return 0;
return -EINVAL;
}
static struct irq_chip armada_370_xp_msi_irq_chip = {
.name = "armada_370_xp_msi_irq",
.irq_enable = unmask_msi_irq,
@ -200,6 +209,7 @@ static int armada_370_xp_msi_init(struct device_node *node,
msi_chip->setup_irq = armada_370_xp_setup_msi_irq;
msi_chip->teardown_irq = armada_370_xp_teardown_msi_irq;
msi_chip->check_device = armada_370_xp_check_msi_device;
msi_chip->of_node = node;
armada_370_xp_msi_domain =