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rust: pci: fix build failure when CONFIG_PCI_MSI is disabled

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When CONFIG_PCI_MSI is disabled pci_alloc_irq_vectors() and
pci_free_irq_vectors() are defined as inline functions and hence require
a Rust helper.

	error[E0425]: cannot find function `pci_alloc_irq_vectors` in crate `bindings`
	    --> rust/kernel/pci/irq.rs:144:23
	     |
	 144 | ...s::pci_alloc_irq_vectors(dev.as_raw(), min_vecs, max_vecs, irq_types.as_raw())
	     |       ^^^^^^^^^^^^^^^^^^^^^ help: a function with a similar name exists: `pci_irq_vector`
	     |
	    ::: .../rust/bindings/bindings_helpers_generated.rs:1197:5
	     |
	1197 |     pub fn pci_irq_vector(pdev: *mut pci_dev, nvec: ffi::c_uint) -> ffi::c_int;
	     |     --------------------------------------------------------------------------- similarly named function `pci_irq_vector` defined here

	error[E0425]: cannot find function `pci_free_irq_vectors` in crate `bindings`
	    --> rust/kernel/pci/irq.rs:170:28
	     |
	 170 |         unsafe { bindings::pci_free_irq_vectors(self.dev.as_raw()) };
	     |                            ^^^^^^^^^^^^^^^^^^^^ help: a function with a similar name exists: `pci_irq_vector`
	     |
	    ::: .../rust/bindings/bindings_helpers_generated.rs:1197:5
	     |
	1197 |     pub fn pci_irq_vector(pdev: *mut pci_dev, nvec: ffi::c_uint) -> ffi::c_int;
	     |     --------------------------------------------------------------------------- similarly named function `pci_irq_vector` defined here

	error: aborting due to 2 previous errors

Fix this by adding the corresponding helpers.

Fixes: 340ccc9735 ("rust: pci: Allocate and manage PCI interrupt vectors")
Reported-by: kernel test robot <[email protected]>
Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/
Reviewed-by: Alice Ryhl <[email protected]>
Reviewed-by: Joel Fernandes <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Danilo Krummrich <[email protected]>
This commit is contained in:
Danilo Krummrich committed 2025-12-04 00:24:47 +13:00
1 parent d3666c1f8a
commit 473b9f3317
1 file changed
+13 -1
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rust/helpers/pci.c
+13 -1
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@@ -23,9 +23,21 @@ bool rust_helper_dev_is_pci(const struct device *dev)
}
#ifndef CONFIG_PCI_MSI
int rust_helper_pci_alloc_irq_vectors(struct pci_dev *dev,
unsigned int min_vecs,
unsigned int max_vecs,
unsigned int flags)
{
return pci_alloc_irq_vectors(dev, min_vecs, max_vecs, flags);
}
void rust_helper_pci_free_irq_vectors(struct pci_dev *dev)
{
pci_free_irq_vectors(dev);
}
int rust_helper_pci_irq_vector(struct pci_dev *pdev, unsigned int nvec)
{
return pci_irq_vector(pdev, nvec);
}
#endif