diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
index 20ca6a9..baf9b64 100644
--- a/drivers/usb/host/ehci-hcd.c
+++ b/drivers/usb/host/ehci-hcd.c
@@ -101,6 +101,11 @@
 module_param (ignore_oc, bool, S_IRUGO);
 MODULE_PARM_DESC (ignore_oc, "ignore bogus hardware overcurrent indications");
 
+/* for link power management(LPM) feature */
+static unsigned int hird;
+module_param(hird, int, S_IRUGO);
+MODULE_PARM_DESC(hird, "host initiated resume duration, +1 for each 75us\n");
+
 #define	INTR_MASK (STS_IAA | STS_FATAL | STS_PCD | STS_ERR | STS_INT)
 
 /*-------------------------------------------------------------------------*/
@@ -305,6 +310,7 @@
 static void ehci_work(struct ehci_hcd *ehci);
 
 #include "ehci-hub.c"
+#include "ehci-lpm.c"
 #include "ehci-mem.c"
 #include "ehci-q.c"
 #include "ehci-sched.c"
@@ -604,6 +610,17 @@
 		default:	BUG();
 		}
 	}
+	if (HCC_LPM(hcc_params)) {
+		/* support link power management EHCI 1.1 addendum */
+		ehci_dbg(ehci, "support lpm\n");
+		ehci->has_lpm = 1;
+		if (hird > 0xf) {
+			ehci_dbg(ehci, "hird %d invalid, use default 0",
+			hird);
+			hird = 0;
+		}
+		temp |= hird << 24;
+	}
 	ehci->command = temp;
 
 	/* Accept arbitrarily long scatter-gather lists */