Messages in this thread Patch in this message | | | From | Pali Rohár <> | Subject | [PATCH 05/15] PCI: mvebu: Disallow mapping interrupts on emulated bridges | Date | Thu, 25 Nov 2021 13:45:55 +0100 |
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Interrupt support on mvebu emulated bridges is not implemented yet.
So properly indicate return value to callers that they cannot request interrupts from emulated bridge.
Signed-off-by: Pali Rohár <pali@kernel.org> Cc: stable@vger.kernel.org --- drivers/pci/controller/pci-mvebu.c | 10 ++++++++++ 1 file changed, 10 insertions(+)
diff --git a/drivers/pci/controller/pci-mvebu.c b/drivers/pci/controller/pci-mvebu.c index 19c6ee298442..a3df352d440e 100644 --- a/drivers/pci/controller/pci-mvebu.c +++ b/drivers/pci/controller/pci-mvebu.c @@ -705,6 +705,15 @@ static struct pci_ops mvebu_pcie_ops = { .write = mvebu_pcie_wr_conf, }; +static int mvebu_pcie_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) +{ + /* Interrupt support on mvebu emulated bridges is not implemented yet */ + if (dev->bus->number == 0) + return 0; /* Proper return code 0 == NO_IRQ */ + + return of_irq_parse_and_map_pci(dev, slot, pin); +} + static resource_size_t mvebu_pcie_align_resource(struct pci_dev *dev, const struct resource *res, resource_size_t start, @@ -1119,6 +1128,7 @@ static int mvebu_pcie_probe(struct platform_device *pdev) bridge->sysdata = pcie; bridge->ops = &mvebu_pcie_ops; bridge->align_resource = mvebu_pcie_align_resource; + bridge->map_irq = mvebu_pcie_map_irq; return pci_host_probe(bridge); } -- 2.20.1
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