drivers: isdn: use kernel macros to convert hex digit
Signed-off-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Cc: Karsten Keil <isdn@linux-pingi.de>
Cc: Tilman Schmidt <tilman@imap.cc>
Cc: netdev@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/isdn/hisax/q931.c b/drivers/isdn/hisax/q931.c
index 8b853d5..c0771f9 100644
--- a/drivers/isdn/hisax/q931.c
+++ b/drivers/isdn/hisax/q931.c
@@ -1152,20 +1152,11 @@
{
register int i;
register char *t = txt;
- register u_char w;
for (i = 0; i < cnt; i++) {
*t++ = ' ';
- w = (p[i] >> 4) & 0x0f;
- if (w < 10)
- *t++ = '0' + w;
- else
- *t++ = 'A' - 10 + w;
- w = p[i] & 0x0f;
- if (w < 10)
- *t++ = '0' + w;
- else
- *t++ = 'A' - 10 + w;
+ *t++ = hex_asc_hi(p[i]);
+ *t++ = hex_asc_lo(p[i]);
}
*t++ = 0;
return (t - txt);