gigaset: skip unnecessary hex formatting

Don't generate the hex representation of the payload data if it
isn't actually used afterwards.

Impact: optimization
Signed-off-by: Tilman Schmidt <tilman@imap.cc>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/isdn/gigaset/isocdata.c b/drivers/isdn/gigaset/isocdata.c
index b171e75cb52e..09202a5a3444 100644
--- a/drivers/isdn/gigaset/isocdata.c
+++ b/drivers/isdn/gigaset/isocdata.c
@@ -246,6 +246,10 @@ static inline void dump_bytes(enum debuglevel level, const char *tag,
         unsigned char c;
         static char dbgline[3 * 32 + 1];
         int i = 0;
+
+        if (!(gigaset_debuglevel & level))
+                return;
+
         while (count-- > 0) {
                 if (i > sizeof(dbgline) - 4) {
                         dbgline[i] = '\0';