diff --git a/src/southbridge/amd/pi/hudson/hudson.c b/src/southbridge/amd/pi/hudson/hudson.c
index a1c805d..bd9deb1 100644
--- a/src/southbridge/amd/pi/hudson/hudson.c
+++ b/src/southbridge/amd/pi/hudson/hudson.c
@@ -59,12 +59,9 @@
 {
 	printk(BIOS_DEBUG, "hudson_enable()\n");
 	switch (dev->path.pci.devfn) {
-	case (0x14 << 3) | 7: /* 0:14.7  SD */
+	case PCI_DEVFN(0x14, 7): /* SD */
 		if (dev->enabled == 0) {
-			// read the VENDEV ID
-			struct device *sd_dev =
-				dev_find_slot( 0, PCI_DEVFN( 0x14, 7));
-			u32 sd_device_id = pci_read_config32( sd_dev, 0) >> 16;
+			u32 sd_device_id = pci_read_config32(dev, 0) >> 16;
 			/* turn off the SDHC controller in the PM reg */
 			u8 reg8;
 			if (sd_device_id == PCI_DEVICE_ID_AMD_HUDSON_SD) {