driver/ukbus: Fix an invalid check in PCI probe

This causes the PCI driver to not initialize on certain systems.
The check should uses `==` instead.

Signed-off-by: Kha Dinh <khadinh@g.skku.edu>
Approved-by: Razvan Deaconescu <razvand@unikraft.io>
Reviewed-by: Eduard Vintilă <eduard.vintila47@gmail.com>
Reviewed-by: Stefan Jumarea <stefanjumarea02@gmail.com>
GitHub-Closes: #1110

diff --git a/drivers/ukbus/pci/arch/x86_64/pci_bus.c b/drivers/ukbus/pci/arch/x86_64/pci_bus.c
index f8fd4e50564168dad7ed84a20897c70a44143b3c..1c6af669ff36d385e7447dd78740bb2d78cee73c 100644 (file)
--- a/drivers/ukbus/pci/arch/x86_64/pci_bus.c
+++ b/drivers/ukbus/pci/arch/x86_64/pci_bus.c
@@ -230,7 +230,7 @@ int arch_pci_probe(struct uk_alloc *pha)
                        PCI_CONF_READ(uint32_t, &vendor_id,
                                        config_addr, VENDOR_ID);
 
-                       if (vendor_id != PCI_INVALID_ID)
+                       if (vendor_id == PCI_INVALID_ID)
                                break;
 
                        probe_bus(function);