This is a note to let you know that I've just added the patch titled
PCI/MSI: Provide missing stub for pci_msix_can_alloc_dyn()
to the 6.2-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
pci-msi-provide-missing-stub-for-pci_msix_can_alloc_dyn.patch
and it can be found in the queue-6.2 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 195d8e5da3acb17c5357526494f818a21e97cd10 Mon Sep 17 00:00:00 2001
From: Reinette Chatre <reinette.chatre@xxxxxxxxx>
Date: Wed, 29 Mar 2023 13:13:11 -0700
Subject: PCI/MSI: Provide missing stub for pci_msix_can_alloc_dyn()
From: Reinette Chatre <reinette.chatre@xxxxxxxxx>
commit 195d8e5da3acb17c5357526494f818a21e97cd10 upstream.
pci_msix_can_alloc_dyn() is not declared when CONFIG_PCI_MSI is disabled.
There is no existing user of pci_msix_can_alloc_dyn() but work is in
progress to change this. This work encounters the following error when
CONFIG_PCI_MSI is disabled:
drivers/vfio/pci/vfio_pci_intrs.c:427:21: error: implicit declaration of function 'pci_msix_can_alloc_dyn' [-Werror=implicit-function-declaration]
Provide definition for pci_msix_can_alloc_dyn() in preparation for users
that need to compile when CONFIG_PCI_MSI is disabled.
[bhelgaas: Also reported by Arnd Bergmann <arnd@xxxxxxxxxx> in
drivers/net/ethernet/mellanox/mlx5/core/pci_irq.c; added his Fixes: line]
Fixes: fb0a6a268dcd ("net/mlx5: Provide external API for allocating vectors")
Fixes: 34026364df8e ("PCI/MSI: Provide post-enable dynamic allocation interfaces for MSI-X")
Link: https://lore.kernel.org/oe-kbuild-all/202303291000.PWFqGCxH-lkp@xxxxxxxxx/
Link: https://lore.kernel.org/r/310ecc4815dae4174031062f525245f0755c70e2.1680119924.git.reinette.chatre@xxxxxxxxx
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Signed-off-by: Reinette Chatre <reinette.chatre@xxxxxxxxx>
Signed-off-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@xxxxxxxxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx # v6.2+
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
include/linux/pci.h | 2 ++
1 file changed, 2 insertions(+)
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -1623,6 +1623,8 @@ pci_alloc_irq_vectors(struct pci_dev *de
flags, NULL);
}
+static inline bool pci_msix_can_alloc_dyn(struct pci_dev *dev)
+{ return false; }
static inline struct msi_map pci_msix_alloc_irq_at(struct pci_dev *dev, unsigned int index,
const struct irq_affinity_desc *affdesc)
{
Patches currently in stable-queue which might be from reinette.chatre@xxxxxxxxx are
queue-6.2/pci-msi-provide-missing-stub-for-pci_msix_can_alloc_dyn.patch
