---

yaml
---
r: 324303
b: refs/heads/master
c: 9a123f1
h: refs/heads/master
i:
  324301: 27fdf75
  324299: dbbea79
  324295: 12bd646
  324287: 901c993
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 07b509b7943e5594f3f228e5b62a49cf6a033709
+refs/heads/master: 9a123f19832702753805afe0e93db26799b91b07

trunk/drivers/misc/mei/main.c

@@ -905,6 +905,27 @@ static struct miscdevice  mei_misc_device = {
 		.minor = MISC_DYNAMIC_MINOR,
 };
 
+/**
+ * mei_quirk_probe - probe for devices that doesn't valid ME interface
+ * @pdev: PCI device structure
+ * @ent: entry into pci_device_table
+ *
+ * returns true if ME Interface is valid, false otherwise
+ */
+static bool __devinit mei_quirk_probe(struct pci_dev *pdev,
+				const struct pci_device_id *ent)
+{
+	u32 reg;
+	if (ent->device == MEI_DEV_ID_PBG_1) {
+		pci_read_config_dword(pdev, 0x48, &reg);
+		/* make sure that bit 9 is up and bit 10 is down */
+		if ((reg & 0x600) == 0x200) {
+			dev_info(&pdev->dev, "Device doesn't have valid ME Interface\n");
+			return false;
+		}
+	}
+	return true;
+}
 /**
  * mei_probe - Device Initialization Routine
  *
@@ -920,6 +941,12 @@ static int __devinit mei_probe(struct pci_dev *pdev,
 	int err;
 
 	mutex_lock(&mei_mutex);
+
+	if (!mei_quirk_probe(pdev, ent)) {
+		err = -ENODEV;
+		goto end;
+	}
+
 	if (mei_device) {
 		err = -EEXIST;
 		goto end;