setos

commit 1c1e4402427b9ef63374ab677c52e7b9b4fee9c4
parent b689c798238981e206011b47bf539c4873967814
Author: Matsuda Kenji <info@mtkn.jp>
Date:   Sat, 13 Apr 2024 13:32:53 +0900

check if the device is multifunctional

Diffstat:
M
sys/src/kernel/amd64/pci.c
 | 
5
++++-

1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/sys/src/kernel/amd64/pci.c b/sys/src/kernel/amd64/pci.c
@@ -76,7 +76,10 @@ int
 pci_scan_dev(uint8 bus, uint8 dev)
 {
 	int func;
-	for (func = 0; func < 8; func++) {
+	if (pci_config_read_vendor_id(bus, dev, 0) == 0xffff) {
+		return pci_scan_func(bus, dev, 0);
+	}
+	for (func = 1; func < 8; func++) {
 		if (pci_config_read_vendor_id(bus, dev, func) == 0xffff) {
 			continue;
 		}