can: isotp: change error format from decimal to symbolic error names

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>

diff --git a/net/can/isotp.c b/net/can/isotp.c
index 9f94ad3..2c4f84f 100644 (file)
--- a/net/can/isotp.c
+++ b/net/can/isotp.c
@@ -221,8 +221,8 @@ static int isotp_send_fc(struct sock *sk, int ae, u8 flowstatus)
 
        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);
 
@@ -798,8 +798,8 @@ isotp_tx_burst:
 
                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 */
@@ -946,8 +946,8 @@ static int isotp_sendmsg(struct socket *sock, struct msghdr *msg, size_t size)
        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));
                return err;
        }