diff --git a/drivers/net/wireless/rt2x00/rt2800usb.h b/drivers/net/wireless/rt2x00/rt2800usb.h
index 8c88690c1537..0a525a722a74 100644
--- a/drivers/net/wireless/rt2x00/rt2800usb.h
+++ b/drivers/net/wireless/rt2x00/rt2800usb.h
@@ -44,7 +44,7 @@ struct rt2800_ops {
 
 	int (*regbusy_read)(struct rt2x00_dev *rt2x00dev,
 			    const unsigned int offset,
-			    struct rt2x00_field32 field, u32 *reg);
+			    const struct rt2x00_field32 field, u32 *reg);
 };
 
 static inline void rt2800_register_read(struct rt2x00_dev *rt2x00dev,
diff --git a/drivers/net/wireless/rt2x00/rt2x00usb.c b/drivers/net/wireless/rt2x00/rt2x00usb.c
index 501544882c2c..b34d4b6badd0 100644
--- a/drivers/net/wireless/rt2x00/rt2x00usb.c
+++ b/drivers/net/wireless/rt2x00/rt2x00usb.c
@@ -156,7 +156,7 @@ EXPORT_SYMBOL_GPL(rt2x00usb_vendor_request_large_buff);
 
 int rt2x00usb_regbusy_read(struct rt2x00_dev *rt2x00dev,
 			   const unsigned int offset,
-			   struct rt2x00_field32 field,
+			   const struct rt2x00_field32 field,
 			   u32 *reg)
 {
 	unsigned int i;
diff --git a/drivers/net/wireless/rt2x00/rt2x00usb.h b/drivers/net/wireless/rt2x00/rt2x00usb.h
index f6fb58f2ca72..212dec47119e 100644
--- a/drivers/net/wireless/rt2x00/rt2x00usb.h
+++ b/drivers/net/wireless/rt2x00/rt2x00usb.h
@@ -365,7 +365,7 @@ static inline void rt2x00usb_register_multiwrite(struct rt2x00_dev *rt2x00dev,
  */
 int rt2x00usb_regbusy_read(struct rt2x00_dev *rt2x00dev,
 			   const unsigned int offset,
-			   struct rt2x00_field32 field,
+			   const struct rt2x00_field32 field,
 			   u32 *reg);
 
 /*