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Subject[RFC PATCH v8 4/7] of/irq: Adjust of pci irq parsing for multiple interrupts
Date
Currently we are considering the first irq as the PCI interrupt pin,
but a pci device may have multiple interrupts(e.g. PCIe WAKE# pin).

Only parse the PCI interrupt pin when the irq is unnamed or named as
"pci".

Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
---

Changes in v8: None
Changes in v7: None
Changes in v6: None
Changes in v5: None
Changes in v3: None
Changes in v2: None

drivers/of/of_pci_irq.c | 13 ++++++++++++-
1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/drivers/of/of_pci_irq.c b/drivers/of/of_pci_irq.c
index 3a05568f65df..8b69211f0b88 100644
--- a/drivers/of/of_pci_irq.c
+++ b/drivers/of/of_pci_irq.c
@@ -27,7 +27,18 @@ int of_irq_parse_pci(const struct pci_dev *pdev, struct of_phandle_args *out_irq
*/
dn = pci_device_to_OF_node(pdev);
if (dn) {
- rc = of_irq_parse_one(dn, 0, out_irq);
+ struct property *prop;
+ const char *name;
+ int index = 0;
+
+ prop = of_find_property(dn, "interrupt-names", NULL);
+ for (name = of_prop_next_string(prop, NULL); name;
+ name = of_prop_next_string(prop, name), index++) {
+ if (!strcmp(name, "pci"))
+ break;
+ }
+
+ rc = of_irq_parse_one(dn, index, out_irq);
if (!rc)
return rc;
}
--
2.11.0

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