Plug the default MSI-X prepare descriptor for non-implemented ops by default to workaround the inability of Hyper-V vPCI module to setup the MSI-X descriptors properly; especially for dynamically allocated MSI-X.
Signed-off-by: Naman Jain <[email protected]> --- drivers/pci/msi/irqdomain.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/pci/msi/irqdomain.c b/drivers/pci/msi/irqdomain.c index 765312c92d9b..655e99b9c8cc 100644 --- a/drivers/pci/msi/irqdomain.c +++ b/drivers/pci/msi/irqdomain.c @@ -84,6 +84,8 @@ static void pci_msi_domain_update_dom_ops(struct msi_domain_info *info) } else { if (ops->set_desc == NULL) ops->set_desc = pci_msi_domain_set_desc; + if (ops->prepare_desc == NULL) + ops->prepare_desc = pci_msix_prepare_desc; } } base-commit: 26ffb3d6f02cd0935fb9fa3db897767beee1cb2a -- 2.34.1
