Re: [PATCH v3 1/1 resend] i2c: rcar: modify I2C driver

From: Wolfram Sang
Date: Wed Aug 28 2013 - 05:02:59 EST


On Tue, Aug 27, 2013 at 04:55:22PM +0900, Nguyen Viet Dung wrote:
> This patch modify I2C driver of rcar-H1 to usable on both rcar-H1 and rcar-H2.
>
> Signed-off-by: Nguyen Viet Dung <nv-dung@xxxxxxxxxxx>

Yes, this is much better. Only minor things...

> + switch (priv->devtype) {
> + default:
> + case I2C_RCAR_H1:
> + cdf_width = 2;
> + break;
> + case I2C_RCAR_H2:
> + cdf_width = 3;
> + break;
> + }
> +

Please put the default case block at the end.

> @@ -632,6 +649,13 @@ static int rcar_i2c_probe(struct platform_device *pdev)
> bus_speed = 100000; /* default 100 kHz */
> if (pdata && pdata->bus_speed)
> bus_speed = pdata->bus_speed;
> +
> + if (!pdev->id_entry) {
> + dev_err(&pdev->dev, "no entry\n");
> + return -ENODEV;
> + }

This cannot happen. Since you have 'i2c-rcar' in the id_table, the
driver core will always match against the id_table and there is always a
driver_data defined.


> + priv->devtype = pdev->id_entry->driver_data;

Basically the same, but please use

platform_get_device_id(pdev)->driver_data;

Otherwise good!

Thanks,

Wolfram

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