rt2x00: Add helper macros

Add some helper macro's to help determining the
the timeout for USB register access.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 16 insertions, 3 deletions

diff --git a/drivers/net/wireless/rt2x00/rt2x00usb.h b/drivers/net/wireless/rt2x00/rt2x00usb.h
index 11e55180cbaf..1efaaae04632 100644
--- a/drivers/net/wireless/rt2x00/rt2x00usb.h
+++ b/drivers/net/wireless/rt2x00/rt2x00usb.h
@@ -47,6 +47,20 @@
 #define REGISTER_TIMEOUT                500
 #define REGISTER_TIMEOUT_FIRMWARE       1000
 
+/**
+ * REGISTER_TIMEOUT16 - Determine the timeout for 16bit register access
+ * @__datalen: Data length
+ */
+#define REGISTER_TIMEOUT16(__datalen)   \
+        ( REGISTER_TIMEOUT * ((__datalen) / sizeof(u16)) )
+
+/**
+ * REGISTER_TIMEOUT32 - Determine the timeout for 32bit register access
+ * @__datalen: Data length
+ */
+#define REGISTER_TIMEOUT32(__datalen)   \
+        ( REGISTER_TIMEOUT * ((__datalen) / sizeof(u32)) )
+
 /*
  * Cache size
  */
@@ -187,11 +201,10 @@ static inline int rt2x00usb_vendor_request_sw(struct rt2x00_dev *rt2x00dev,
 static inline int rt2x00usb_eeprom_read(struct rt2x00_dev *rt2x00dev,
                                         __le16 *eeprom, const u16 lenght)
 {
-        int timeout = REGISTER_TIMEOUT * (lenght / sizeof(u16));
-
         return rt2x00usb_vendor_request(rt2x00dev, USB_EEPROM_READ,
                                         USB_VENDOR_REQUEST_IN, 0, 0,
-                                        eeprom, lenght, timeout);
+                                        eeprom, lenght,
+                                        REGISTER_TIMEOUT16(lenght));
 }
 
 /*