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authorLucas Stach <l.stach@pengutronix.de>2015-09-18 21:58:34 +0300
committerBjorn Helgaas <bhelgaas@google.com>2015-09-18 21:58:34 +0300
commit339e5b44eda2150baad183def6b7030fad5ec44e (patch)
treedd2bc451f26ec360960b1861441397352bfea109 /drivers/pci/msi.c
parented8b472df44af6dc4cb18e828dc9bb2d57f14b9e (diff)
downloadlinux-339e5b44eda2150baad183def6b7030fad5ec44e.tar.xz
PCI: Add msi_controller setup_irqs() method for special multivector setup
Add a msi_controller setup_irqs() method so MSI chip providers can implement their own multivector MSI setup. [bhelgaas: changelog] Signed-off-by: Lucas Stach <l.stach@pengutronix.de> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Pratyush Anand <pratyush.anand@gmail.com>
Diffstat (limited to 'drivers/pci/msi.c')
-rw-r--r--drivers/pci/msi.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c
index d4497141d083..74319f497656 100644
--- a/drivers/pci/msi.c
+++ b/drivers/pci/msi.c
@@ -105,9 +105,12 @@ void __weak arch_teardown_msi_irq(unsigned int irq)
int __weak arch_setup_msi_irqs(struct pci_dev *dev, int nvec, int type)
{
+ struct msi_controller *chip = dev->bus->msi;
struct msi_desc *entry;
int ret;
+ if (chip && chip->setup_irqs)
+ return chip->setup_irqs(chip, dev, nvec, type);
/*
* If an architecture wants to support multiple MSI, it needs to
* override arch_setup_msi_irqs()