n_hdlc: cleanup messages during registration

1) n_hdlc prints two lines during registration. Squeeze it into one.
2) prefix the error message with "N_HDLC: ", so that it's clear which
   ldisc failed to register.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Link: https://lore.kernel.org/r/20200219084118.26491-5-jslaby@suse.cz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/n_hdlc.c b/drivers/tty/n_hdlc.c
index b651b5b..87f22e5 100644 (file)
--- a/drivers/tty/n_hdlc.c
+++ b/drivers/tty/n_hdlc.c
@@ -899,13 +899,13 @@ static int __init n_hdlc_init(void)
        else if (maxframe > 65535)
                maxframe = 65535;
 
-       pr_info("HDLC line discipline maxframe=%d\n", maxframe);
-
        status = tty_register_ldisc(N_HDLC, &n_hdlc_ldisc);
        if (!status)
-               pr_info("N_HDLC line discipline registered.\n");
+               pr_info("N_HDLC line discipline registered with maxframe=%d\n",
+                               maxframe);
        else
-               pr_err("error registering line discipline: %d\n", status);
+               pr_err("N_HDLC: error registering line discipline: %d\n",
+                               status);
 
        return status;