1 files changed, 24 insertions, 5 deletions

diff --git a/drivers/ide/pci/jmicron.c b/drivers/ide/pci/jmicron.c
index 53f25500c22b..be4fc96c29e0 100644
--- a/drivers/ide/pci/jmicron.c
+++ b/drivers/ide/pci/jmicron.c
@@ -240,12 +240,31 @@ static int __devinit jmicron_init_one(struct pci_dev *dev, const struct pci_devi
         return 0;
 }
 
+/* If libata is configured, jmicron PCI quirk will configure it such
+ * that the SATA ports are in AHCI function while the PATA ports are
+ * in a separate IDE function.  In such cases, match device class and
+ * attach only to IDE.  If libata isn't configured, keep the old
+ * behavior for backward compatibility.
+ */
+#if defined(CONFIG_ATA) || defined(CONFIG_ATA_MODULE)
+#define JMB_CLASS       PCI_CLASS_STORAGE_IDE << 8
+#define JMB_CLASS_MASK  0xffff00
+#else
+#define JMB_CLASS       0
+#define JMB_CLASS_MASK  0
+#endif
+
 static struct pci_device_id jmicron_pci_tbl[] = {
-        { PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB361, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
-        { PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB363, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1},
-        { PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB365, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 2},
-        { PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB366, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 3},
-        { PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB368, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4},
+        { PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB361,
+          PCI_ANY_ID, PCI_ANY_ID, JMB_CLASS, JMB_CLASS_MASK, 0},
+        { PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB363,
+          PCI_ANY_ID, PCI_ANY_ID, JMB_CLASS, JMB_CLASS_MASK, 1},
+        { PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB365,
+          PCI_ANY_ID, PCI_ANY_ID, JMB_CLASS, JMB_CLASS_MASK, 2},
+        { PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB366,
+          PCI_ANY_ID, PCI_ANY_ID, JMB_CLASS, JMB_CLASS_MASK, 3},
+        { PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB368,
+          PCI_ANY_ID, PCI_ANY_ID, JMB_CLASS, JMB_CLASS_MASK, 4},
         { 0, },
 };