Several architectures open code effectively the same code block for finding and mapping PCI irqs. This patch consolidates it down to a single function.
Signed-off-by: Grant Likely <[email protected]> Cc: Russell King <[email protected]> Cc: Michal Simek <[email protected]> Cc: Ralf Baechle <[email protected]> Cc: Benjamin Herrenschmidt <[email protected]> --- arch/arm/mach-integrator/pci_v3.c | 17 +---------------- arch/mips/pci/fixup-lantiq.c | 12 +----------- arch/mips/pci/pci-rt3883.c | 22 +--------------------- arch/x86/kernel/devicetree.c | 7 +------ drivers/of/of_pci_irq.c | 25 +++++++++++++++++++++++++ drivers/pci/host/pci-mvebu.c | 14 +------------- include/linux/of_pci.h | 1 + 7 files changed, 31 insertions(+), 67 deletions(-) diff --git a/arch/arm/mach-integrator/pci_v3.c b/arch/arm/mach-integrator/pci_v3.c index bb3aeb3..a87e510 100644 --- a/arch/arm/mach-integrator/pci_v3.c +++ b/arch/arm/mach-integrator/pci_v3.c @@ -835,21 +835,6 @@ static struct hw_pci pci_v3 __initdata = { #ifdef CONFIG_OF -static int __init pci_v3_map_irq_dt(const struct pci_dev *dev, u8 slot, u8 pin) -{ - struct of_phandle_args oirq; - int ret; - - ret = of_irq_parse_pci(dev, &oirq); - if (ret) { - dev_err(&dev->dev, "of_irq_parse_pci() %d\n", ret); - /* Proper return code 0 == NO_IRQ */ - return 0; - } - - return irq_create_of_mapping(&oirq); -} - static int __init pci_v3_dtprobe(struct platform_device *pdev, struct device_node *np) { @@ -918,7 +903,7 @@ static int __init pci_v3_dtprobe(struct platform_device *pdev, return -EINVAL; } - pci_v3.map_irq = pci_v3_map_irq_dt; + pci_v3.map_irq = of_irq_parse_and_map_pci; pci_common_init_dev(&pdev->dev, &pci_v3); return 0; diff --git a/arch/mips/pci/fixup-lantiq.c b/arch/mips/pci/fixup-lantiq.c index aef60e7..c2ce41e 100644 --- a/arch/mips/pci/fixup-lantiq.c +++ b/arch/mips/pci/fixup-lantiq.c @@ -25,15 +25,5 @@ int pcibios_plat_dev_init(struct pci_dev *dev) int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) { - struct of_phandle_args dev_irq; - int irq; - - if (of_irq_parse_pci(dev, &dev_irq)) { - dev_err(&dev->dev, "trying to map irq for unknown slot:%d pin:%d\n", - slot, pin); - return 0; - } - irq = irq_create_of_mapping(&dev_irq); - dev_info(&dev->dev, "SLOT:%d PIN:%d IRQ:%d\n", slot, pin, irq); - return irq; + return of_irq_parse_and_map_pci(dev, slot, pin); } diff --git a/arch/mips/pci/pci-rt3883.c b/arch/mips/pci/pci-rt3883.c index eadc431..adeff2b 100644 --- a/arch/mips/pci/pci-rt3883.c +++ b/arch/mips/pci/pci-rt3883.c @@ -583,27 +583,7 @@ err_put_intc_node: int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) { - struct of_phandle_args dev_irq; - int err; - int irq; - - err = of_irq_parse_pci(dev, &dev_irq); - if (err) { - pr_err("pci %s: unable to get irq map, err=%d\n", - pci_name((struct pci_dev *) dev), err); - return 0; - } - - irq = irq_create_of_mapping(&dev_irq); - - if (irq == 0) - pr_crit("pci %s: no irq found for pin %u\n", - pci_name((struct pci_dev *) dev), pin); - else - pr_info("pci %s: using irq %d for pin %u\n", - pci_name((struct pci_dev *) dev), irq, pin); - - return irq; + return of_irq_parse_and_map_pci(dev, slot, pin); } int pcibios_plat_dev_init(struct pci_dev *dev) diff --git a/arch/x86/kernel/devicetree.c b/arch/x86/kernel/devicetree.c index d39948f..69c826a 100644 --- a/arch/x86/kernel/devicetree.c +++ b/arch/x86/kernel/devicetree.c @@ -105,7 +105,6 @@ struct device_node *pcibios_get_phb_of_node(struct pci_bus *bus) static int x86_of_pci_irq_enable(struct pci_dev *dev) { - struct of_phandle_args oirq; u32 virq; int ret; u8 pin; @@ -116,11 +115,7 @@ static int x86_of_pci_irq_enable(struct pci_dev *dev) if (!pin) return 0; - ret = of_irq_parse_pci(dev, &oirq); - if (ret) - return ret; - - virq = irq_create_of_mapping(&oirq); + virq = of_irq_parse_and_map_pci(dev, 0, 0); if (virq == 0) return -EINVAL; dev->irq = virq; diff --git a/drivers/of/of_pci_irq.c b/drivers/of/of_pci_irq.c index 303afeb..8e92acd 100644 --- a/drivers/of/of_pci_irq.c +++ b/drivers/of/of_pci_irq.c @@ -94,3 +94,28 @@ int of_irq_parse_pci(const struct pci_dev *pdev, struct of_phandle_args *out_irq return of_irq_parse_raw(laddr, out_irq); } EXPORT_SYMBOL_GPL(of_irq_parse_pci); + +/** + * of_irq_parse_and_map_pci() - Decode a PCI irq from the device tree and map to a virq + * @dev: The pci device needing an irq + * @slot: PCI slot number; passed when used as map_irq callback. Unused + * @pin: PCI irq pin number; passed when used as map_irq callback. Unused + * + * @slot and @pin are unused, but included in the function so that this + * function can be used directly as the map_irq callback to pci_fixup_irqs(). + */ +int of_irq_parse_and_map_pci(const struct pci_dev *dev, u8 slot, u8 pin) +{ + struct of_phandle_args oirq; + int ret; + + ret = of_irq_parse_pci(dev, &oirq); + if (ret) { + dev_err(&dev->dev, "of_irq_parse_pci() failed with rc=%d\n", ret); + return 0; /* Proper return code 0 == NO_IRQ */ + } + + return irq_create_of_mapping(&oirq); +} +EXPORT_SYMBOL_GPL(of_irq_parse_and_map_pci); + diff --git a/drivers/pci/host/pci-mvebu.c b/drivers/pci/host/pci-mvebu.c index 3a8d01e..07ddb3a 100644 --- a/drivers/pci/host/pci-mvebu.c +++ b/drivers/pci/host/pci-mvebu.c @@ -645,18 +645,6 @@ static int __init mvebu_pcie_setup(int nr, struct pci_sys_data *sys) return 1; } -static int __init mvebu_pcie_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) -{ - struct of_phandle_args oirq; - int ret; - - ret = of_irq_parse_pci(dev, &oirq); - if (ret) - return ret; - - return irq_create_of_mapping(&oirq); -} - static struct pci_bus *mvebu_pcie_scan_bus(int nr, struct pci_sys_data *sys) { struct mvebu_pcie *pcie = sys_to_pcie(sys); @@ -705,7 +693,7 @@ static void __init mvebu_pcie_enable(struct mvebu_pcie *pcie) hw.private_data = (void **)&pcie; hw.setup = mvebu_pcie_setup; hw.scan = mvebu_pcie_scan_bus; - hw.map_irq = mvebu_pcie_map_irq; + hw.map_irq = of_irq_parse_and_map_pci; hw.ops = &mvebu_pcie_ops; hw.align_resource = mvebu_pcie_align_resource; diff --git a/include/linux/of_pci.h b/include/linux/of_pci.h index f297237..1a1f5ff 100644 --- a/include/linux/of_pci.h +++ b/include/linux/of_pci.h @@ -7,6 +7,7 @@ struct pci_dev; struct of_phandle_args; int of_irq_parse_pci(const struct pci_dev *pdev, struct of_phandle_args *out_irq); +int of_irq_parse_and_map_pci(const struct pci_dev *dev, u8 slot, u8 pin); struct device_node; struct device_node *of_pci_find_child_device(struct device_node *parent, -- 1.8.1.2 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
