Re: [PATCH v3 5/5] rust: pci: expose the allocated interrupt type

[sashiko-bot@kernel.org]

Thank you for your contribution! Sashiko AI review found 1 potential issue(s) to consider:
- [Low] rust_helper_pci_irq_type() causes a build failure when CONFIG_PCI is disabled because pci_irq_type() is undefined.
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--- Patch [5]: [PATCH v3 5/5] rust: pci: expose the allocated interrupt type ---
commit 60bd93f7488eb98904a6a089158302157e26da1d
Author: Danilo Krummrich <dakr@kernel.org>

rust: pci: expose the allocated interrupt type

This commit adds irq_type() on IrqVectorRegistration and IrqVector, wrapping
the new pci_irq_type() C function. It allows a driver to query the allocated
interrupt type (MSI-X, MSI, or INTx).

Link: https://lore.kernel.org/all/20260808031120.363869-4-jhubbard@nvidia.com/

> diff --git a/rust/helpers/pci.c b/rust/helpers/pci.c
> index e44905317d759..23b06becb4489 100644
> --- a/rust/helpers/pci.c
> +++ b/rust/helpers/pci.c
> @@ -24,6 +24,11 @@ __rust_helper bool rust_helper_dev_is_pci(const struct device *dev)
>  	return dev_is_pci(dev);
>  }
>  
> +__rust_helper unsigned int rust_helper_pci_irq_type(struct pci_dev *pdev)
> +{
> +	return pci_irq_type(pdev);
> +}
> +

[Severity: Low]
Does this code cause a build failure when CONFIG_PCI is disabled?

It looks like this regression could result in an implicit declaration error,
because there is no fallback stub for pci_irq_type() in the CONFIG_PCI=n
block of include/linux/pci.h, and this helper is unconditionally compiled here.

[ ... ]

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Sashiko AI review · https://sashiko.dev/#/patchset/20260813165234.620555-1-dakr@kernel.org?part=5