Using static const generally increases object text and decreases data size.
It also generally decreases overall object size.
   text	   data	    bss	    dec	    hex	filename
   1897	     56	    672	   2625	    a41	drivers/net/wireless/ath/carl9170/cmd.o.new
   1897	     56	    672	   2625	    a41	drivers/net/wireless/ath/carl9170/cmd.o.old
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
 
 int carl9170_write_reg(struct ar9170 *ar, const u32 reg, const u32 val)
 {
-       __le32 buf[2] = {
+       const __le32 buf[2] = {
                cpu_to_le32(reg),
                cpu_to_le32(val),
        };