[PATCHv2] wireless: at76c50x: use native hex_pack_byte() method

[Andy Shevchenko]

Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Cc: "John W. Linville" <linville@xxxxxxxxxxxxx>
Cc: linux-wireless@xxxxxxxxxxxxxxx
Cc: netdev@xxxxxxxxxxxxxxx
---
 drivers/net/wireless/at76c50x-usb.c |   16 ++++++----------
 1 files changed, 6 insertions(+), 10 deletions(-)

diff --git a/drivers/net/wireless/at76c50x-usb.c b/drivers/net/wireless/at76c50x-usb.c
index 2986014..96daaad 100644
--- a/drivers/net/wireless/at76c50x-usb.c
+++ b/drivers/net/wireless/at76c50x-usb.c
@@ -500,7 +500,6 @@ exit:
 
 #define HEX2STR_BUFFERS 4
 #define HEX2STR_MAX_LEN 64
-#define BIN2HEX(x) ((x) < 10 ? '0' + (x) : (x) + 'A' - 10)
 
 /* Convert binary data into hex string */
 static char *hex2str(void *buf, int len)
@@ -514,18 +513,15 @@ static char *hex2str(void *buf, int len)
 	if (len > HEX2STR_MAX_LEN)
 		len = HEX2STR_MAX_LEN;
 
-	if (len <= 0) {
-		ret[0] = '\0';
-		return ret;
-	}
-
 	while (len--) {
-		*obuf++ = BIN2HEX(*ibuf >> 4);
-		*obuf++ = BIN2HEX(*ibuf & 0xf);
+		obuf = pack_hex_byte(obuf, *ibuf++);
 		*obuf++ = '-';
-		ibuf++;
 	}
-	*(--obuf) = '\0';
+
+	if (*obuf == '-')
+		obuf--;
+
+	*obuf = '\0';
 
 	return ret;
 }
-- 
1.7.6.3

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