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

[Thomas Gleixner]

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>

---
 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: