Re: [PATCH v2 0/3] Clarify pci_free_irq_vectors() usage constraints

[Bjorn Helgaas <helgaas@kernel.org>]

On Wed, Feb 11, 2026 at 04:24:56PM +0800, Shawn Lin wrote:
> pcim_enable_device() automatically manages IRQ vectors, which can cause
> double-free issues if drivers manually call pci_free_irq_vectors().
> 
> This series adds documentation and warnings to prevent this:
> 1. msi-howto.rst guidance
> 2. kernel-doc warning
> 3. TODO comment for future cleanup
> 
> 
> Changes in v2:
> - rework the commit message and documentation
> 
> Shawn Lin (3):
>   Documentation: PCI: Clarify pci_free_irq_vectors() usage for managed
>     devices
>   PCI/MSI: Add warning to pci_free_irq_vectors() documentation
>   PCI/MSI: Add TODO comment about legacy pcim_enable_device()
>     side-effect
> 
>  Documentation/PCI/msi-howto.rst |  7 +++++--
>  drivers/pci/msi/api.c           |  5 +++++
>  drivers/pci/msi/msi.c           | 10 ++++++++++
>  3 files changed, 20 insertions(+), 2 deletions(-)

Squashed the first two patches and applied to pci/msi for v7.1,
thanks!

This will be rebased to v7.0-rc1 after it is tagged.