rt2x00: Fix RF offset

The word_base is in bytes instead of word index number,
this means that when using it, it should be transformed into
a word index first.

Otherwise RF register reading will fail through debugfs since
we would start reading 4 words starting with word 4 (which is the last
valid word for RF).
Signed-off-by: NIvo van Doorn <IvDoorn@gmail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

drivers/net/wireless/rt2x00/rt2x00debug.c

@@ -435,11 +435,12 @@ static ssize_t rt2x00debug_read_##__name(struct file *file,	\
 	if (index >= debug->__name.word_count)			\
 		return -EINVAL;					\
 								\
+	index += (debug->__name.word_base /			\
+		  debug->__name.word_size);			\
+								\
 	if (debug->__name.flags & RT2X00DEBUGFS_OFFSET)		\
 		index *= debug->__name.word_size;		\
 								\
-	index += debug->__name.word_base;			\
-								\
 	debug->__name.read(intf->rt2x00dev, index, &value);	\
 								\
 	size = sprintf(line, __format, value);			\
@@ -476,11 +477,12 @@ static ssize_t rt2x00debug_write_##__name(struct file *file,	\
 	size = strlen(line);					\
 	value = simple_strtoul(line, NULL, 0);			\
 								\
+	index += (debug->__name.word_base /			\
+		  debug->__name.word_size);			\
+								\
 	if (debug->__name.flags & RT2X00DEBUGFS_OFFSET)		\
 		index *= debug->__name.word_size;		\
 								\
-	index += debug->__name.word_base;			\
-								\
 	debug->__name.write(intf->rt2x00dev, index, value);	\
 								\
 	*offset += size;					\