[patch 31/39] Documentation: PCI: Add reference to PCI/MSI device driver APIs

[Bjorn Helgaas]

On Fri, Nov 11, 2022 at 02:55:04PM +0100, Thomas Gleixner wrote:
> From: Ahmed S. Darwish <darwi at linutronix.de>
> 
> All exported device-driver MSI APIs are now grouped in one place at
> drivers/pci/msi/api.c with comprehensive kernel-docs added.
> 
> Reference these kernel-docs in the official PCI/MSI howto.
> 
> Signed-off-by: Ahmed S. Darwish <darwi at linutronix.de>
> Signed-off-by: Thomas Gleixner <tglx at linutronix.de>

Acked-by: Bjorn Helgaas <bhelgaas at google.com>

> ---
>  Documentation/PCI/msi-howto.rst |   10 ++++++++++
>  1 file changed, 10 insertions(+)
> ---
> --- a/Documentation/PCI/msi-howto.rst
> +++ b/Documentation/PCI/msi-howto.rst
> @@ -285,3 +285,13 @@ to bridges between the PCI root and the
>  It is also worth checking the device driver to see whether it supports MSIs.
>  For example, it may contain calls to pci_alloc_irq_vectors() with the
>  PCI_IRQ_MSI or PCI_IRQ_MSIX flags.
> +
> +
> +List of device drivers MSI(-X) APIs
> +===================================
> +
> +The PCI/MSI subystem has a dedicated C file for its exported device driver
> +APIs — `drivers/pci/msi/api.c`. The following functions are exported:
> +
> +.. kernel-doc:: drivers/pci/msi/api.c
> +   :export:
>