# The MUSB IRQ schedules work on every interrupt.
# This is unnecessary, and causes excessive CPU load.
#
# Here we only schedule work if there is something for
# the worker to do.

Index: git/drivers/usb/musb/musb_core.c
===================================================================
--- git.orig/drivers/usb/musb/musb_core.c
+++ git/drivers/usb/musb/musb_core.c
@@ -925,7 +925,9 @@ b_host:
 	}
 #endif
 
-	schedule_work(&musb->irq_work);
+	if (musb->xceiv->state != musb->xceiv_old_state) {
+		schedule_work(&musb->irq_work);
+	}
 
 	return handled;
 }