Re: [RFC,v14 2/5] of/irq: Adjust of_pci_irq parsing for multiple interrupts

Thierry Reding
2023-02-08T11:44:51Z

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On Wed, Feb 08, 2023 at 04:46:42PM +0530, Manikanta Maddireddy wrote:
> From: Jeffy Chen <jeffy.chen@rock-chips.com>
>
> 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>
> Signed-off-by: Manikanta Maddireddy <mmaddireddy@nvidia.com>
> ---
>
> Changes in v14:
> Address Rob's comment on using of_property_match_string().
>
> Changes in v13: None
> Changes in v12: None
> Changes in v11:
> Address Brian's comments.
>
> Changes in v10: None
> Changes in v9: None
> 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/pci/of.c | 14 +++++++++++---
> 1 file changed, 11 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/pci/of.c b/drivers/pci/of.c
> index 196834ed44fe..ff897c40ed71 100644
> --- a/drivers/pci/of.c
> +++ b/drivers/pci/of.c
> @@ -429,9 +429,17 @@ 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 = 0;

No need to initialize to 0 here since you're assigning to it immediately
below.

Otherwise, looks good, so with that initialization dropped, this is:

Reviewed-by: Thierry Reding <treding@nvidia.com>

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