diff --git a/drivers/i2c/busses/i2c-piix4.c b/drivers/i2c/busses/i2c-piix4.c
index 630bce68bf3814e59d443773a30a3a4aaa01291f..9c32eb124b7285f8427bd11b5e6e3f94fa38aa39 100644
--- a/drivers/i2c/busses/i2c-piix4.c
+++ b/drivers/i2c/busses/i2c-piix4.c
@@ -75,6 +75,9 @@
 #define PIIX4_WORD_DATA		0x0C
 #define PIIX4_BLOCK_DATA	0x14
 
+/* Multi-port constants */
+#define PIIX4_MAX_ADAPTERS 4
+
 /* insmod parameters */
 
 /* If force is set to anything different from 0, we forcibly enable the
@@ -561,7 +564,7 @@ static const struct pci_device_id piix4_ids[] = {
 
 MODULE_DEVICE_TABLE (pci, piix4_ids);
 
-static struct i2c_adapter *piix4_main_adapter;
+static struct i2c_adapter *piix4_main_adapters[PIIX4_MAX_ADAPTERS];
 static struct i2c_adapter *piix4_aux_adapter;
 
 static int piix4_add_adapter(struct pci_dev *dev, unsigned short smba,
@@ -629,7 +632,7 @@ static int piix4_probe(struct pci_dev *dev, const struct pci_device_id *id)
 		return retval;
 
 	/* Try to register main SMBus adapter, give up if we can't */
-	retval = piix4_add_adapter(dev, retval, &piix4_main_adapter);
+	retval = piix4_add_adapter(dev, retval, &piix4_main_adapters[0]);
 	if (retval < 0)
 		return retval;
 
@@ -674,9 +677,13 @@ static void piix4_adap_remove(struct i2c_adapter *adap)
 
 static void piix4_remove(struct pci_dev *dev)
 {
-	if (piix4_main_adapter) {
-		piix4_adap_remove(piix4_main_adapter);
-		piix4_main_adapter = NULL;
+	int port = PIIX4_MAX_ADAPTERS;
+
+	while (--port >= 0) {
+		if (piix4_main_adapters[port]) {
+			piix4_adap_remove(piix4_main_adapters[port]);
+			piix4_main_adapters[port] = NULL;
+		}
 	}
 
 	if (piix4_aux_adapter) {