[PATCH stable 5.10 01/10] can: isotp: change error format from decimal to symbolic error names

[Oliver Hartkopp <socketcan@hartkopp.net>]

From: Patrick Menschel <menschel.p@posteo.de>

commit 46d8657a6b284e32b6b3bf1a6c93ee507fdd3cdb upstream

This patch changes the format string for errors from decimal %d to
symbolic error names %pe to achieve more comprehensive log messages.

Link: https://lore.kernel.org/r/20210427052150.2308-2-menschel.p@posteo.de
Signed-off-by: Patrick Menschel <menschel.p@posteo.de>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
---
 net/can/isotp.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/net/can/isotp.c b/net/can/isotp.c
index 16ebc187af1c..d34f9ab2eb62 100644
--- a/net/can/isotp.c
+++ b/net/can/isotp.c
@@ -226,12 +226,12 @@ static int isotp_send_fc(struct sock *sk, int ae, u8 flowstatus)
 
 	ncf->flags = so->ll.tx_flags;
 
 	can_send_ret = can_send(nskb, 1);
 	if (can_send_ret)
-		pr_notice_once("can-isotp: %s: can_send_ret %d\n",
-			       __func__, can_send_ret);
+		pr_notice_once("can-isotp: %s: can_send_ret %pe\n",
+			       __func__, ERR_PTR(can_send_ret));
 
 	dev_put(dev);
 
 	/* reset blocksize counter */
 	so->rx.bs = 0;
@@ -812,12 +812,12 @@ static enum hrtimer_restart isotp_tx_timer_handler(struct hrtimer *hrtimer)
 		skb->dev = dev;
 		can_skb_set_owner(skb, sk);
 
 		can_send_ret = can_send(skb, 1);
 		if (can_send_ret)
-			pr_notice_once("can-isotp: %s: can_send_ret %d\n",
-				       __func__, can_send_ret);
+			pr_notice_once("can-isotp: %s: can_send_ret %pe\n",
+				       __func__, ERR_PTR(can_send_ret));
 
 		if (so->tx.idx >= so->tx.len) {
 			/* we are done */
 			so->tx.state = ISOTP_IDLE;
 			dev_put(dev);
@@ -974,12 +974,12 @@ static int isotp_sendmsg(struct socket *sock, struct msghdr *msg, size_t size)
 	skb->dev = dev;
 	skb->sk = sk;
 	err = can_send(skb, 1);
 	dev_put(dev);
 	if (err) {
-		pr_notice_once("can-isotp: %s: can_send_ret %d\n",
-			       __func__, err);
+		pr_notice_once("can-isotp: %s: can_send_ret %pe\n",
+			       __func__, ERR_PTR(err));
 
 		/* no transmission -> no timeout monitoring */
 		if (hrtimer_sec)
 			hrtimer_cancel(&so->txtimer);
 
-- 
2.34.1