rt2800usb: add rt2800_regbusy_read() wrapper

Part of preparations for later code unification.
Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Acked-by: NIvo van Doorn <IvDoorn@gmail.com>
Acked-by: NGertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

drivers/net/wireless/rt2x00/rt2800usb.c

@@ -58,14 +58,14 @@ MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption.");
  * The _lock versions must be used if you already hold the csr_mutex
  */
 #define WAIT_FOR_BBP(__dev, __reg) \
-	rt2x00usb_regbusy_read((__dev), BBP_CSR_CFG, BBP_CSR_CFG_BUSY, (__reg))
+	rt2800_regbusy_read((__dev), BBP_CSR_CFG, BBP_CSR_CFG_BUSY, (__reg))
 #define WAIT_FOR_RFCSR(__dev, __reg) \
-	rt2x00usb_regbusy_read((__dev), RF_CSR_CFG, RF_CSR_CFG_BUSY, (__reg))
+	rt2800_regbusy_read((__dev), RF_CSR_CFG, RF_CSR_CFG_BUSY, (__reg))
 #define WAIT_FOR_RF(__dev, __reg) \
-	rt2x00usb_regbusy_read((__dev), RF_CSR_CFG0, RF_CSR_CFG0_BUSY, (__reg))
+	rt2800_regbusy_read((__dev), RF_CSR_CFG0, RF_CSR_CFG0_BUSY, (__reg))
 #define WAIT_FOR_MCU(__dev, __reg) \
-	rt2x00usb_regbusy_read((__dev), H2M_MAILBOX_CSR, \
-			       H2M_MAILBOX_CSR_OWNER, (__reg))
+	rt2800_regbusy_read((__dev), H2M_MAILBOX_CSR, \
+			    H2M_MAILBOX_CSR_OWNER, (__reg))
 
 static void rt2800usb_bbp_write(struct rt2x00_dev *rt2x00dev,
 				const unsigned int word, const u8 value)

drivers/net/wireless/rt2x00/rt2800usb.h

@@ -62,6 +62,14 @@ static inline void rt2800_register_multiwrite(struct rt2x00_dev *rt2x00dev,
 	rt2x00usb_register_multiwrite(rt2x00dev, offset, value, length);
 }
 
+static inline int rt2800_regbusy_read(struct rt2x00_dev *rt2x00dev,
+				      const unsigned int offset,
+				      struct rt2x00_field32 field,
+				      u32 *reg)
+{
+	return rt2x00usb_regbusy_read(rt2x00dev, offset, field, reg);
+}
+
 /*
  * RF chip defines.
  *