Re: [PATCH v2 2/2] i2c: Add Renesas RZ/V2M controller

[Philipp Zabel <p.zabel@pengutronix.de>]

On Di, 2022-06-28 at 20:45 +0100, Phil Edworthy wrote:
> Yet another i2c controller from Renesas that is found on the RZ/V2M
> (r9a09g011) SoC. It can support only 100kHz and 400KHz operation.
> 
> Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com>
> Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com>
> ---
> v2:
>  - Use the new NOIRQ_SYSTEM_SLEEP_PM_OPS() as suggested by Arnd
>  - Lots of small fixes based on Geert's review
> ---
>  drivers/i2c/busses/Kconfig     |  10 +
>  drivers/i2c/busses/Makefile    |   1 +
>  drivers/i2c/busses/i2c-rzv2m.c | 530 +++++++++++++++++++++++++++++++++
>  3 files changed, 541 insertions(+)
>  create mode 100644 drivers/i2c/busses/i2c-rzv2m.c
> 
[...]
> diff --git a/drivers/i2c/busses/i2c-rzv2m.c b/drivers/i2c/busses/i2c-rzv2m.c
> new file mode 100644
> index 000000000000..ab326d557dc5
> --- /dev/null
> +++ b/drivers/i2c/busses/i2c-rzv2m.c
> @@ -0,0 +1,530 @@
[...]
> +static int rzv2m_i2c_probe(struct platform_device *pdev)
> +{
> +	struct device *dev = &pdev->dev;
> +	struct rzv2m_i2c_priv *priv;
> +	struct reset_control *rstc;
> +	struct i2c_adapter *adap;
> +	struct resource *res;
> +	int irq, ret;
> +
> +	priv = devm_kzalloc(dev, sizeof(struct rzv2m_i2c_priv), GFP_KERNEL);
> +	if (!priv)
> +		return -ENOMEM;
> +
> +	priv->base = devm_platform_get_and_ioremap_resource(pdev, 0, &res);
> +	if (IS_ERR(priv->base))
> +		return PTR_ERR(priv->base);
> +
> +	priv->clk = devm_clk_get(dev, NULL);
> +	if (IS_ERR(priv->clk)) {
> +		dev_err_probe(dev, PTR_ERR(priv->clk), "Can't get clock\n");
> +		return PTR_ERR(priv->clk);
> +	}
> +
> +	rstc = devm_reset_control_get(dev, NULL);

Please don't use devm_reset_control_get. This should probably be
devm_reset_control_get_shared().

regards
Philipp