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.
Fixes: 34026364df8e ("PCI/MSI: Provide post-enable dynamic allocation interfaces for MSI-X")
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Link: https://lore.kernel.org/oe-kbuild-all/202303291000.PWFqGCxH-lkp@xxxxxxxxx/
Signed-off-by: Reinette Chatre <reinette.chatre@xxxxxxxxx>
---
I missed this one in my previous fix. After this all the functions
in pci.h's #ifdef CONFIG_PCI_MSI portion have stubs when
CONFIG_PCI_MSI is disabled.
include/linux/pci.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/include/linux/pci.h b/include/linux/pci.h
index b50e5c79f7e3..a5dda515fcd1 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -1624,6 +1624,8 @@ pci_alloc_irq_vectors(struct pci_dev *dev, unsigned int min_vecs,
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)
{
--
2.34.1
