n_gsm: Use print_hex_dump_bytes

Use the standard mechanism to print a hex buffer
to eliminate empty printf warning.

A couple % smaller text and data too.

$ size drivers/tty/n_gsm.o*
   text	   data	    bss	    dec	    hex	filename
  23543	    312	   6376	  30231	   7617	drivers/tty/n_gsm.o.new
  24051	    408	   6496	  30955	   78eb	drivers/tty/n_gsm.o.old

Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 10 insertions, 25 deletions

diff --git a/drivers/tty/n_gsm.c b/drivers/tty/n_gsm.c
index 6abc73598847..720160acd9dc 100644
--- a/drivers/tty/n_gsm.c
+++ b/drivers/tty/n_gsm.c
@@ -526,19 +526,6 @@ static int gsm_stuff_frame(const u8 *input, u8 *output, int len)
         return olen;
 }
 
-static void hex_packet(const unsigned char *p, int len)
-{
-        int i;
-        for (i = 0; i < len; i++) {
-                if (i && (i % 16) == 0) {
-                        pr_cont("\n");
-                        pr_debug("");
-                }
-                pr_cont("%02X ", *p++);
-        }
-        pr_cont("\n");
-}
-
 /**
  *      gsm_send        -       send a control frame
  *      @gsm: our GSM mux
@@ -685,10 +672,10 @@ static void gsm_data_kick(struct gsm_mux *gsm)
                         len = msg->len + 2;
                 }
 
-                if (debug & 4) {
-                        pr_debug("gsm_data_kick:\n");
-                        hex_packet(gsm->txframe, len);
-                }
+                if (debug & 4)
+                        print_hex_dump_bytes("gsm_data_kick: ",
+                                             DUMP_PREFIX_OFFSET,
+                                             gsm->txframe, len);
 
                 if (gsm->output(gsm, gsm->txframe + skip_sof,
                                                 len - skip_sof) < 0)
@@ -2091,10 +2078,9 @@ static int gsmld_output(struct gsm_mux *gsm, u8 *data, int len)
                 set_bit(TTY_DO_WRITE_WAKEUP, &gsm->tty->flags);
                 return -ENOSPC;
         }
-        if (debug & 4) {
-                pr_debug("-->%d bytes out\n", len);
-                hex_packet(data, len);
-        }
+        if (debug & 4)
+                print_hex_dump_bytes("gsmld_output: ", DUMP_PREFIX_OFFSET,
+                                     data, len);
         gsm->tty->ops->write(gsm->tty, data, len);
         return len;
 }
@@ -2148,10 +2134,9 @@ static unsigned int gsmld_receive_buf(struct tty_struct *tty,
         char buf[64];
         char flags;
 
-        if (debug & 4) {
-                pr_debug("Inbytes %dd\n", count);
-                hex_packet(cp, count);
-        }
+        if (debug & 4)
+                print_hex_dump_bytes("gsmld_receive: ", DUMP_PREFIX_OFFSET,
+                                     cp, count);
 
         for (i = count, dp = cp, f = fp; i; i--, dp++) {
                 flags = *f++;