can: rcar_canfd: rcar_canfd_channel_probe(): register the CAN device when fully ready

Register the CAN device only when all the necessary initialization is
completed. This patch makes sure all the data structures and locks are
initialized before registering the CAN device.

Link: https://lore.kernel.org/all/20220221225935.12300-1-prabhakar.mahadev-lad.rj@bp.renesas.com
Reported-by: Pavel Machek <pavel@denx.de>
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Pavel Machek <pavel@denx.de>
Reviewed-by: Ulrich Hecht <uli+renesas@fpond.eu>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

diff --git a/drivers/net/can/rcar/rcar_canfd.c b/drivers/net/can/rcar/rcar_canfd.c
index b7dc1c32875f21ef2ed21c19b107b820b18e0be5..acd74725831f2c03d649d815412323be90d905f4 100644 (file)
--- a/drivers/net/can/rcar/rcar_canfd.c
+++ b/drivers/net/can/rcar/rcar_canfd.c
@@ -1715,15 +1715,15 @@ static int rcar_canfd_channel_probe(struct rcar_canfd_global *gpriv, u32 ch,
 
        netif_napi_add(ndev, &priv->napi, rcar_canfd_rx_poll,
                       RCANFD_NAPI_WEIGHT);
+       spin_lock_init(&priv->tx_lock);
+       devm_can_led_init(ndev);
+       gpriv->ch[priv->channel] = priv;
        err = register_candev(ndev);
        if (err) {
                dev_err(&pdev->dev,
                        "register_candev() failed, error %d\n", err);
                goto fail_candev;
        }
-       spin_lock_init(&priv->tx_lock);
-       devm_can_led_init(ndev);
-       gpriv->ch[priv->channel] = priv;
        dev_info(&pdev->dev, "device registered (channel %u)\n", priv->channel);
        return 0;