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Message-Id: <70d430248415a3304573df4faec19f6a3135db28.1678811267.git.geert+renesas@glider.be>
Date: Tue, 14 Mar 2023 17:29:25 +0100
From: Geert Uytterhoeven <geert+renesas@...der.be>
To: Wolfgang Grandegger <wg@...ndegger.com>,
Marc Kleine-Budde <mkl@...gutronix.de>,
Vincent Mailhol <mailhol.vincent@...adoo.fr>
Cc: linux-can@...r.kernel.org, netdev@...r.kernel.org,
linux-renesas-soc@...r.kernel.org,
Geert Uytterhoeven <geert+renesas@...der.be>
Subject: [PATCH v3] can: rcar_canfd: Improve error messages
Improve printed error messages:
- Replace numerical error codes by mnemotechnic error codes, to
improve the user experience in case of errors,
- Drop parentheses around printed numbers, cfr.
Documentation/process/coding-style.rst,
- Drop printing of an error message in case of out-of-memory, as the
core memory allocation code already takes care of this.
Suggested-by: Vincent Mailhol <mailhol.vincent@...adoo.fr>
Signed-off-by: Geert Uytterhoeven <geert+renesas@...der.be>
---
v3:
- Add missing SoB,
v2:
- This is v2 of "[PATCH] can: rcar_canfd: Print mnemotechnic error
codes". I haven't added any tags given on v1, as half of the
printed message changed.
This depends on "[PATCH v2] can: rcar_canfd: Add transceiver support"
https://lore.kernel.org/r/e825b50a843ffe40e33f34e4d858c07c1b2ff259.1678280913.git.geert+renesas@glider.be
---
drivers/net/can/rcar/rcar_canfd.c | 43 +++++++++++++++----------------
1 file changed, 21 insertions(+), 22 deletions(-)
diff --git a/drivers/net/can/rcar/rcar_canfd.c b/drivers/net/can/rcar/rcar_canfd.c
index 6df9a259e5e4f92c..ecdb8ffe2f670c9b 100644
--- a/drivers/net/can/rcar/rcar_canfd.c
+++ b/drivers/net/can/rcar/rcar_canfd.c
@@ -1417,20 +1417,20 @@ static int rcar_canfd_open(struct net_device *ndev)
err = phy_power_on(priv->transceiver);
if (err) {
- netdev_err(ndev, "failed to power on PHY, error %d\n", err);
+ netdev_err(ndev, "failed to power on PHY, %pe\n", ERR_PTR(err));
return err;
}
/* Peripheral clock is already enabled in probe */
err = clk_prepare_enable(gpriv->can_clk);
if (err) {
- netdev_err(ndev, "failed to enable CAN clock, error %d\n", err);
+ netdev_err(ndev, "failed to enable CAN clock, %pe\n", ERR_PTR(err));
goto out_phy;
}
err = open_candev(ndev);
if (err) {
- netdev_err(ndev, "open_candev() failed, error %d\n", err);
+ netdev_err(ndev, "open_candev() failed, %pe\n", ERR_PTR(err));
goto out_can_clock;
}
@@ -1731,10 +1731,9 @@ static int rcar_canfd_channel_probe(struct rcar_canfd_global *gpriv, u32 ch,
int err = -ENODEV;
ndev = alloc_candev(sizeof(*priv), RCANFD_FIFO_DEPTH);
- if (!ndev) {
- dev_err(dev, "alloc_candev() failed\n");
+ if (!ndev)
return -ENOMEM;
- }
+
priv = netdev_priv(ndev);
ndev->netdev_ops = &rcar_canfd_netdev_ops;
@@ -1777,8 +1776,8 @@ static int rcar_canfd_channel_probe(struct rcar_canfd_global *gpriv, u32 ch,
rcar_canfd_channel_err_interrupt, 0,
irq_name, priv);
if (err) {
- dev_err(dev, "devm_request_irq CH Err(%d) failed, error %d\n",
- err_irq, err);
+ dev_err(dev, "devm_request_irq CH Err %d failed, %pe\n",
+ err_irq, ERR_PTR(err));
goto fail;
}
irq_name = devm_kasprintf(dev, GFP_KERNEL, "canfd.ch%d_trx",
@@ -1791,8 +1790,8 @@ static int rcar_canfd_channel_probe(struct rcar_canfd_global *gpriv, u32 ch,
rcar_canfd_channel_tx_interrupt, 0,
irq_name, priv);
if (err) {
- dev_err(dev, "devm_request_irq Tx (%d) failed, error %d\n",
- tx_irq, err);
+ dev_err(dev, "devm_request_irq Tx %d failed, %pe\n",
+ tx_irq, ERR_PTR(err));
goto fail;
}
}
@@ -1823,7 +1822,7 @@ static int rcar_canfd_channel_probe(struct rcar_canfd_global *gpriv, u32 ch,
gpriv->ch[priv->channel] = priv;
err = register_candev(ndev);
if (err) {
- dev_err(dev, "register_candev() failed, error %d\n", err);
+ dev_err(dev, "register_candev() failed, %pe\n", ERR_PTR(err));
goto fail_candev;
}
dev_info(dev, "device registered (channel %u)\n", priv->channel);
@@ -1967,16 +1966,16 @@ static int rcar_canfd_probe(struct platform_device *pdev)
rcar_canfd_channel_interrupt, 0,
"canfd.ch_int", gpriv);
if (err) {
- dev_err(dev, "devm_request_irq(%d) failed, error %d\n",
- ch_irq, err);
+ dev_err(dev, "devm_request_irq %d failed, %pe\n",
+ ch_irq, ERR_PTR(err));
goto fail_dev;
}
err = devm_request_irq(dev, g_irq, rcar_canfd_global_interrupt,
0, "canfd.g_int", gpriv);
if (err) {
- dev_err(dev, "devm_request_irq(%d) failed, error %d\n",
- g_irq, err);
+ dev_err(dev, "devm_request_irq %d failed, %pe\n",
+ g_irq, ERR_PTR(err));
goto fail_dev;
}
} else {
@@ -1985,8 +1984,8 @@ static int rcar_canfd_probe(struct platform_device *pdev)
"canfd.g_recc", gpriv);
if (err) {
- dev_err(dev, "devm_request_irq(%d) failed, error %d\n",
- g_recc_irq, err);
+ dev_err(dev, "devm_request_irq %d failed, %pe\n",
+ g_recc_irq, ERR_PTR(err));
goto fail_dev;
}
@@ -1994,8 +1993,8 @@ static int rcar_canfd_probe(struct platform_device *pdev)
rcar_canfd_global_err_interrupt, 0,
"canfd.g_err", gpriv);
if (err) {
- dev_err(dev, "devm_request_irq(%d) failed, error %d\n",
- g_err_irq, err);
+ dev_err(dev, "devm_request_irq %d failed, %pe\n",
+ g_err_irq, ERR_PTR(err));
goto fail_dev;
}
}
@@ -2012,14 +2011,14 @@ static int rcar_canfd_probe(struct platform_device *pdev)
/* Enable peripheral clock for register access */
err = clk_prepare_enable(gpriv->clkp);
if (err) {
- dev_err(dev, "failed to enable peripheral clock, error %d\n",
- err);
+ dev_err(dev, "failed to enable peripheral clock, %pe\n",
+ ERR_PTR(err));
goto fail_reset;
}
err = rcar_canfd_reset_controller(gpriv);
if (err) {
- dev_err(dev, "reset controller failed\n");
+ dev_err(dev, "reset controller failed, %pe\n", ERR_PTR(err));
goto fail_clk;
}
--
2.34.1
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