From mboxrd@z Thu Jan  1 00:00:00 1970
From: balbi@ti.com (Felipe Balbi)
Date: Mon, 9 Dec 2013 20:51:11 -0600
Subject: [PATCH v3 1/2] usb: dwc3: Add Keystone specific glue layer
In-Reply-To: <1386627424-373-2-git-send-email-w-kwok2@ti.com>
References: <1386627424-373-1-git-send-email-w-kwok2@ti.com>
 <1386627424-373-2-git-send-email-w-kwok2@ti.com>
Message-ID: <20131210025110.GA20090@saruman.home>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org

Hi,

On Mon, Dec 09, 2013 at 05:17:03PM -0500, WingMan Kwok wrote:
> +static void kdwc3_enable_irqs(struct dwc3_keystone *kdwc)
> +{
> +	u32 val;
> +
> +	val = kdwc3_readl(kdwc->usbss, USBSS_IRQENABLE_SET_0);
> +	val = USBSS_IRQ_COREIRQ_EN;

this misses the | in |=. I can fix it up while applying, this time only.

> +static int kdwc3_probe(struct platform_device *pdev)
> +{
> +	struct device		*dev = &pdev->dev;
> +	struct device_node	*node = pdev->dev.of_node;
> +	struct dwc3_keystone	*kdwc;
> +	struct resource		*res;
> +	int			error, irq;
> +
> +	kdwc = devm_kzalloc(dev, sizeof(*kdwc), GFP_KERNEL);
> +	if (!kdwc)
> +		return -ENOMEM;
> +
> +	platform_set_drvdata(pdev, kdwc);
> +
> +	kdwc->dev = dev;
> +
> +	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> +	if (!res) {
> +		dev_err(dev, "missing usbss resource\n");
> +		return -EINVAL;
> +	}
> +
> +	kdwc->usbss = devm_ioremap_resource(dev, res);
> +	if (IS_ERR(kdwc->usbss))
> +		return PTR_ERR(kdwc->usbss);
> +
> +	kdwc3_dma_mask = dma_get_mask(dev);
> +	dev->dma_mask = &kdwc3_dma_mask;
> +
> +	kdwc->clk = devm_clk_get(kdwc->dev, "usb");
> +	if (IS_ERR_OR_NULL(kdwc->clk)) {

clk_get() will never return NULL. This time, I'll fix it while applying.

> +static int kdwc3_remove(struct platform_device *pdev)
> +{
> +	struct dwc3_keystone *kdwc = platform_get_drvdata(pdev);
> +
> +	kdwc3_disable_irqs(kdwc);
> +	clk_disable_unprepare(kdwc->clk);

I hope the clock isn't shared between core and wrapper, otherwise you
could run into some troubles here. Can you confirm ?

-- 
balbi
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