isdn: use the common ascii hex helpers

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Acked-by: Karsten Keil <kkeil@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 3 deletions

diff --git a/drivers/isdn/gigaset/isocdata.c b/drivers/isdn/gigaset/isocdata.c
index e30a7773f93c..fbce5222d83c 100644
--- a/drivers/isdn/gigaset/isocdata.c
+++ b/drivers/isdn/gigaset/isocdata.c
@@ -247,7 +247,6 @@ static inline void dump_bytes(enum debuglevel level, const char *tag,
 #ifdef CONFIG_GIGASET_DEBUG
         unsigned char c;
         static char dbgline[3 * 32 + 1];
-        static const char hexdigit[] = "0123456789abcdef";
         int i = 0;
         while (count-- > 0) {
                 if (i > sizeof(dbgline) - 4) {
@@ -258,8 +257,8 @@ static inline void dump_bytes(enum debuglevel level, const char *tag,
                 c = *bytes++;
                 dbgline[i] = (i && !(i % 12)) ? '-' : ' ';
                 i++;
-                dbgline[i++] = hexdigit[(c >> 4) & 0x0f];
-                dbgline[i++] = hexdigit[c & 0x0f];
+                dbgline[i++] = hex_asc_hi(c);
+                dbgline[i++] = hex_asc_lo(c);
         }
         dbgline[i] = '\0';
         gig_dbg(level, "%s:%s", tag, dbgline);