diff options
| author | Pali Rohár <[email protected]> | 2021-11-25 13:45:55 +0100 |
|---|---|---|
| committer | Lorenzo Pieralisi <[email protected]> | 2022-01-04 14:58:39 +0000 |
| commit | 319e6046bd5a59e09c1a08fd6f6929df4ae9a1dc (patch) | |
| tree | 00a0fc97cefd79053a914d4d56ef6acd573bff53 | |
| parent | 11c2bf4a20c256eea258a4332244c0deb9af0da8 (diff) | |
PCI: mvebu: Disallow mapping interrupts on emulated bridges
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.
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Pali Rohár <[email protected]>
Signed-off-by: Lorenzo Pieralisi <[email protected]>
| -rw-r--r-- | drivers/pci/controller/pci-mvebu.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/pci/controller/pci-mvebu.c b/drivers/pci/controller/pci-mvebu.c index 8388a9cc911d..d9c76780d7cf 100644 --- a/drivers/pci/controller/pci-mvebu.c +++ b/drivers/pci/controller/pci-mvebu.c @@ -686,6 +686,15 @@ 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, @@ -1102,6 +1111,7 @@ 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); } |