Commit 339e5b44 authored by Lucas Stach's avatar Lucas Stach Committed by Bjorn Helgaas
Browse files

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: default avatarLucas Stach <l.stach@pengutronix.de>
Signed-off-by: default avatarBjorn Helgaas <bhelgaas@google.com>
Reviewed-by: default avatarPratyush Anand <pratyush.anand@gmail.com>
parent ed8b472d

drivers/pci/msi.c

+3 −0
Original line number Diff line number Diff line
@@ -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()

include/linux/msi.h

+2 −0
Original line number Diff line number Diff line
@@ -163,6 +163,8 @@ struct msi_controller { 


	int (*setup_irq)(struct msi_controller *chip, struct pci_dev *dev,

			 struct msi_desc *desc);

	int (*setup_irqs)(struct msi_controller *chip, struct pci_dev *dev,

			  int nvec, int type);

	void (*teardown_irq)(struct msi_controller *chip, unsigned int irq);

};

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