diff options
| author | Reinette Chatre <reinette.chatre@intel.com> | 2023-02-09 13:49:00 -0800 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2023-02-13 12:17:20 +0100 |
| commit | 2b129f0b24ab578b02901b4a1744b7f97399faa0 (patch) | |
| tree | d0f7e7c2f73e45ee313cd29fd142e052a76e5533 /include | |
| parent | ceaa837f96adb69c0df0397937cd74991d5d821a (diff) | |
PCI/MSI: Provide missing stubs for CONFIG_PCI_MSI=n
pci_msix_alloc_irq_at() and pci_msix_free_irq() are not declared when
CONFIG_PCI_MSI is disabled.
Users of these two calls do not yet exist but when users do appear (shown
below is an attempt to use the new API in vfio-pci) the following errors
will be encountered when compiling with CONFIG_PCI_MSI disabled:
drivers/vfio/pci/vfio_pci_intrs.c:461:4: error: implicit declaration of\
function 'pci_msix_free_irq' is invalid in C99\
[-Werror,-Wimplicit-function-declaration]
pci_msix_free_irq(pdev, msix_map);
^
drivers/vfio/pci/vfio_pci_intrs.c:511:15: error: implicit declaration of\
function 'pci_msix_alloc_irq_at' is invalid in C99\
[-Werror,-Wimplicit-function-declaration]
msix_map = pci_msix_alloc_irq_at(pdev, vector, NULL);
Provide definitions for pci_msix_alloc_irq_at() and pci_msix_free_irq() in
preparation for users that need to compile when CONFIG_PCI_MSI is
disabled.
Reported-by: kernel test robot <lkp@intel.com>
Fixes: 34026364df8e ("PCI/MSI: Provide post-enable dynamic allocation interfaces for MSI-X")
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/158e40e1cfcfc58ae30ecb2bbfaf86e5bba7a1ef.1675978686.git.reinette.chatre@intel.com
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/pci.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/include/linux/pci.h b/include/linux/pci.h index adffd65e84b4..254c8a4126a8 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -1621,6 +1621,18 @@ pci_alloc_irq_vectors(struct pci_dev *dev, unsigned int min_vecs, flags, NULL); } +static inline struct msi_map pci_msix_alloc_irq_at(struct pci_dev *dev, unsigned int index, + const struct irq_affinity_desc *affdesc) +{ + struct msi_map map = { .index = -ENOSYS, }; + + return map; +} + +static inline void pci_msix_free_irq(struct pci_dev *pdev, struct msi_map map) +{ +} + static inline void pci_free_irq_vectors(struct pci_dev *dev) { } |