diff --git a/include/linux/usb/otg.h b/include/linux/usb/otg.h
index f8302d0..54b2c5e 100644
--- a/include/linux/usb/otg.h
+++ b/include/linux/usb/otg.h
@@ -146,10 +146,10 @@
 	return -EINVAL;
 }
 
-static inline int otg_io_write(struct otg_transceiver *otg, u32 reg, u32 val)
+static inline int otg_io_write(struct otg_transceiver *otg, u32 val, u32 reg)
 {
 	if (otg->io_ops && otg->io_ops->write)
-		return otg->io_ops->write(otg, reg, val);
+		return otg->io_ops->write(otg, val, reg);
 
 	return -EINVAL;
 }