From: Lad Prabhakar prabhakar.mahadev-lad.rj@bp.renesas.com
stable inclusion from stable-v5.10.107 commit efdd92c18ed4f39602d50dbc4a9d918109715b8d bugzilla: https://gitee.com/openeuler/kernel/issues/I574A2
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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[ Upstream commit c5048a7b2c23ab589f3476a783bd586b663eda5b ]
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@... 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 Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Yu Liao liaoyu15@huawei.com Reviewed-by: Wei Li liwei391@huawei.com Signed-off-by: Zheng Zengkai zhengzengkai@huawei.com --- drivers/net/can/rcar/rcar_canfd.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/net/can/rcar/rcar_canfd.c b/drivers/net/can/rcar/rcar_canfd.c index de59dd6aad29..67f0f14e2bf4 100644 --- a/drivers/net/can/rcar/rcar_canfd.c +++ b/drivers/net/can/rcar/rcar_canfd.c @@ -1598,15 +1598,15 @@ 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;