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

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Message-ID: <103c435e-206c-aaaa-59ba-1eb2a4f77780@cogentembedded.com>
Date:   Thu, 23 Mar 2017 13:37:44 +0300
From:   Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
To:     Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
        Tejun Heo <tj@...nel.org>
Cc:     Sekhar Nori <nsekhar@...com>, Kevin Hilman <khilman@...libre.com>,
        Arnd Bergmann <arnd@...db.de>,
        Russell King <linux@....linux.org.uk>,
        Dmitry Eremin-Solenikov <dbaryshkov@...il.com>,
        linux-ide@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 1/5] ata: add Palmchip BK3710 PATA controller driver

Hello!

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

> Add Palmchip BK3710 PATA controller driver.
>
> Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.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@...entembedded.com>

MBR, Sergei