Re: [PATCH 2/2] can: arasan-canfd: add driver for arasan CAN-FD controller

[Philipp Zabel]

On Mo, 2026-08-03 at 22:05 +0800, Jisheng Zhang wrote:
> Add driver for the arasan CAN-FD controller.
> 
> Signed-off-by: Jisheng Zhang <jszhang@xxxxxxxxxx>
> ---
>  drivers/net/can/Kconfig        |    6 +
>  drivers/net/can/Makefile       |    1 +
>  drivers/net/can/arasan-canfd.c | 1057 ++++++++++++++++++++++++++++++++
>  3 files changed, 1064 insertions(+)
>  create mode 100644 drivers/net/can/arasan-canfd.c
> 
[...]
> diff --git a/drivers/net/can/arasan-canfd.c b/drivers/net/can/arasan-canfd.c
> new file mode 100644
> index 000000000000..63a6191f84f6
> --- /dev/null
> +++ b/drivers/net/can/arasan-canfd.c
> @@ -0,0 +1,1057 @@
[...]
> +static int arasan_canfd_probe(struct platform_device *pdev)
> +{
> +	struct net_device *ndev;
> +	struct arasan_canfd_priv *priv;
> +	struct phy *transceiver;
> +	void __iomem *addr;
> +	int ret;
> +
> +	addr = devm_platform_ioremap_resource(pdev, 0);
> +	if (IS_ERR(addr))
> +		return PTR_ERR(addr);
> +
> +	ndev = alloc_candev(sizeof(struct arasan_canfd_priv), CAN_MAX_TX_QUEUE);
> +	if (!ndev)
> +		return -ENOMEM;
> +	priv = netdev_priv(ndev);
> +
> +	priv->sys_rst = devm_reset_control_get(&pdev->dev, "sys");
> +	if (IS_ERR(priv->sys_rst)) {
> +		dev_err(&pdev->dev, "failed to get sys reset\n");
> +		ret = PTR_ERR(priv->sys_rst);
> +		goto err_free;
> +	}
> +	reset_control_assert(priv->sys_rst);
> +	reset_control_deassert(priv->sys_rst);
> +
> +	priv->can_rst = devm_reset_control_get(&pdev->dev, "can");

Please use devm_reset_control_get_exclusive() directly.


regards
Philipp