linux-kernel - [PATCH 1/3] tty: n_gsm: Improve debug output

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Date:   Thu, 30 Apr 2020 13:34:30 +0200
From:   Gregory CLEMENT <gregory.clement@...tlin.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jiri Slaby <jslaby@...e.com>, linux-kernel@...r.kernel.org
Cc:     Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
        Gregory CLEMENT <gregory.clement@...tlin.com>
Subject: [PATCH 1/3] tty: n_gsm: Improve debug output

Use appropriate print helpers for debug messages.

Signed-off-by: Gregory CLEMENT <gregory.clement@...tlin.com>
---
 drivers/tty/n_gsm.c | 18 +++++-------------
 1 file changed, 5 insertions(+), 13 deletions(-)

diff --git a/drivers/tty/n_gsm.c b/drivers/tty/n_gsm.c
index d77ed82a4840..4965e39e0223 100644
--- a/drivers/tty/n_gsm.c
+++ b/drivers/tty/n_gsm.c
@@ -459,7 +459,7 @@ static void gsm_print_packet(const char *hdr, int addr, int cr,
 	if (!(debug & 1))
 		return;
 
-	pr_info("%s %d) %c: ", hdr, addr, "RC"[cr]);
+	pr_debug("%s %d) %c: ", hdr, addr, "RC"[cr]);
 
 	switch (control & ~PF) {
 	case SABM:
@@ -504,18 +504,10 @@ static void gsm_print_packet(const char *hdr, int addr, int cr,
 	else
 		pr_cont("(F)");
 
-	if (dlen) {
-		int ct = 0;
-		while (dlen--) {
-			if (ct % 8 == 0) {
-				pr_cont("\n");
-				pr_debug("    ");
-			}
-			pr_cont("%02X ", *data++);
-			ct++;
-		}
-	}
-	pr_cont("\n");
+	if (dlen)
+		print_hex_dump_bytes("", DUMP_PREFIX_NONE, data, dlen);
+
+	pr_debug("\n");
 }
 
 
-- 
2.26.1