Re: [PATCH v3 1/5] ata: add Palmchip BK3710 PATA controller driver

[Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>]

Hello!

On 3/22/2017 9:20 PM, Bartlomiej Zolnierkiewicz wrote:

> Add Palmchip BK3710 PATA controller driver.
>
> Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
[...]
> diff --git a/drivers/ata/pata_bk3710.c b/drivers/ata/pata_bk3710.c
> new file mode 100644
> index 0000000..1a1223f
> --- /dev/null
> +++ b/drivers/ata/pata_bk3710.c
> @@ -0,0 +1,382 @@
[...]
> +static int __init pata_bk3710_probe(struct platform_device *pdev)
> +{
> +	struct clk *clk;
> +	struct resource *mem;
> +	struct ata_host *host;
> +	struct ata_port *ap;
> +	void __iomem *base;
> +	unsigned long rate;
> +	int irq;
> +
> +	clk = devm_clk_get(&pdev->dev, NULL);
> +	if (IS_ERR(clk))
> +		return -ENODEV;
> +
> +	clk_enable(clk);
> +	rate = clk_get_rate(clk);
> +	if (!rate)
> +		return -EINVAL;
> +
> +	/* NOTE:  round *down* to meet minimum timings; we count in clocks */
> +	ideclk_period = 1000000000UL / rate;
> +
> +	mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);

    I'd put this close to devm_iorempe_resource() and would probably even get 
rid of 'mem' altogether...

[...]

Acked-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>

MBR, Sergei