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NVIDIA: SAUCE: of/irq: Adjust of_pci_irq parsing for multiple interrupts

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BugLink: https://bugs.launchpad.net/bugs/2080908

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".

http://nvbugs/4478230

Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
Signed-off-by: Manikanta Maddireddy <mmaddireddy@nvidia.com>
Reviewed-by: Thierry Reding <treding@nvidia.com>
(cherry-picked from https://patchwork.ozlabs.org/project/linux-pci/
patch/20230208111645.3863534-3-mmaddireddy@nvidia.com)
Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Acked-by: Noah Wager <noah.wager@canonical.com>
Acked-by: Jacob Martin <jacob.martin@canonical.com>
Signed-off-by: Noah Wager <noah.wager@canonical.com>
This commit is contained in:
Jeffy Chen
2023-02-08 16:46:42 +05:30
committed by Noah Wager
parent 22ced26b1a
commit 7562fbfa12
1 changed files with 11 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/pci/of.c
+11 -3
View File
@@ -470,9 +470,17 @@ static int of_irq_parse_pci(const struct pci_dev *pdev, struct of_phandle_args *
*/
dn = pci_device_to_OF_node(pdev);
if (dn) {
rc = of_irq_parse_one(dn, 0, out_irq);
if (!rc)
return rc;
int index;
index = of_property_match_string(dn, "interrupt-names", "pci");
if (index == -EINVAL) /* Property doesn't exist */
index = 0;
if (index >= 0) {
rc = of_irq_parse_one(dn, index, out_irq);
if (!rc)
return rc;
}
}
/*