From ea643e1a33576216de589cf525dbb40267fde5a9 Mon Sep 17 00:00:00 2001 From: Lucas Stach Date: Fri, 18 Sep 2015 13:58:35 -0500 Subject: [PATCH] PCI: designware: Factor out MSI msg setup Factor out the PCI MSI message setup from the single MSI setup function. This will be reused by the multivector MSI setup. No functional change yet. Signed-off-by: Lucas Stach Signed-off-by: Bjorn Helgaas Acked-by: Pratyush Anand --- drivers/pci/host/pcie-designware.c | 28 +++++++++++++++++----------- 1 file changed, 17 insertions(+), 11 deletions(-) diff --git a/drivers/pci/host/pcie-designware.c b/drivers/pci/host/pcie-designware.c index d72692610aee..ea5b285baea6 100644 --- a/drivers/pci/host/pcie-designware.c +++ b/drivers/pci/host/pcie-designware.c @@ -293,19 +293,9 @@ static int assign_irq(int no_irqs, struct msi_desc *desc, int *pos) return -ENOSPC; } -static int dw_msi_setup_irq(struct msi_controller *chip, struct pci_dev *pdev, - struct msi_desc *desc) +static void dw_msi_setup_msg(struct pcie_port *pp, unsigned int irq, u32 pos) { - int irq, pos; struct msi_msg msg; - struct pcie_port *pp = sys_to_pcie(pdev->bus->sysdata); - - if (desc->msi_attrib.is_msix) - return -EINVAL; - - irq = assign_irq(1, desc, &pos); - if (irq < 0) - return irq; if (pp->ops->get_msi_addr) msg.address_lo = pp->ops->get_msi_addr(pp); @@ -319,6 +309,22 @@ static int dw_msi_setup_irq(struct msi_controller *chip, struct pci_dev *pdev, msg.data = pos; pci_write_msi_msg(irq, &msg); +} + +static int dw_msi_setup_irq(struct msi_controller *chip, struct pci_dev *pdev, + struct msi_desc *desc) +{ + int irq, pos; + struct pcie_port *pp = sys_to_pcie(pdev->bus->sysdata); + + if (desc->msi_attrib.is_msix) + return -EINVAL; + + irq = assign_irq(1, desc, &pos); + if (irq < 0) + return irq; + + dw_msi_setup_msg(pp, irq, pos); return 0; }