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authorThomas Petazzoni <thomas.petazzoni@free-electrons.com>2014-04-18 12:19:48 (GMT)
committerJason Cooper <jason@lakedaemon.net>2014-04-20 19:14:30 (GMT)
commit830cbe4b7a918613276aa3d3b28d24410623f92c (patch)
tree51681a940c786dcda6029d0cf13639feb491dc0e /drivers/irqchip
parentda343fc776e0bcb238b65d9d24610819b95d0ef4 (diff)
downloadlinux-830cbe4b7a918613276aa3d3b28d24410623f92c.tar.xz
irqchip: armada-370-xp: implement the ->check_device() msi_chip operation
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>
Diffstat (limited to 'drivers/irqchip')
-rw-r--r--drivers/irqchip/irq-armada-370-xp.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/irqchip/irq-armada-370-xp.c b/drivers/irqchip/irq-armada-370-xp.c
index 3c8d89b..78b0ac9 100644
--- a/drivers/irqchip/irq-armada-370-xp.c
+++ b/drivers/irqchip/irq-armada-370-xp.c
@@ -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 =