Throttle usb irq's

CRs-fixed: 554572
Change-Id: I57d4f48ca8501b604374650e3ee63669c6fd77a1
Signed-off-by: Parth Dixit <parthd@codeaurora.org>
diff --git a/drivers/usb/host/ehci-msm.c b/drivers/usb/host/ehci-msm.c
index 521ace0..0da7cb1 100644
--- a/drivers/usb/host/ehci-msm.c
+++ b/drivers/usb/host/ehci-msm.c
@@ -42,6 +42,8 @@
 	ehci->caps = USB_CAPLENGTH;
 	hcd->has_tt = 1;
 
+	ehci->log2_irq_thresh = 5;
+
 	retval = ehci_setup(hcd);
 	if (retval)
 		return retval;