linux-kernel - Re: [PATCH v5 13/22] mfd: omap-usb-host: override number of ports from platform data

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Date:	Thu, 03 Jan 2013 16:52:32 +0400
From:	Sergei Shtylyov <sshtylyov@...sta.com>
To:	Roger Quadros <rogerq@...com>
CC:	balbi@...com, sameo@...ux.intel.com, tony@...mide.com,
	keshava_mgowda@...com, bjorn@...k.no, linux-usb@...r.kernel.org,
	linux-omap@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v5 13/22] mfd: omap-usb-host: override number of ports
 from platform data

Hello.

On 02-01-2013 19:00, Roger Quadros wrote:

> Both OMAP4 and 5 exhibit the same revision ID in the REVISION register
> but they have different number of ports i.e. 2 and 3 respectively.
> So we can't rely on REVISION register for number of ports on OMAP5
> and depend on platform data (or device tree) instead.

> Signed-off-by: Roger Quadros <rogerq@...com>
[...]

> diff --git a/drivers/mfd/omap-usb-host.c b/drivers/mfd/omap-usb-host.c
> index 5edb828..710460d 100644
> --- a/drivers/mfd/omap-usb-host.c
> +++ b/drivers/mfd/omap-usb-host.c
> @@ -497,19 +497,27 @@ static int usbhs_omap_probe(struct platform_device *pdev)
>   	 */
>   	pm_runtime_put_sync(dev);
>
> -	switch (omap->usbhs_rev) {
> -	case OMAP_USBHS_REV1:
> -		omap->nports = 3;
> -		break;
> -	case OMAP_USBHS_REV2:
> -		omap->nports = 2;
> -		break;
> -	default:
> -		omap->nports = OMAP3_HS_USB_PORTS;
> -		dev_dbg(dev,
> -		  "USB HOST Rev : 0x%d not recognized, assuming %d ports\n",
> -		   omap->usbhs_rev, omap->nports);
> -		break;
> +	/*
> +	 * If platform data contains nports then use that
> +	 * else make out number of ports from USBHS revision
> +	 */
> +	if (pdata->nports) {
> +		omap->nports = pdata->nports;
> +	} else {
> +		switch (omap->usbhs_rev) {
> +		case OMAP_USBHS_REV1:
> +			omap->nports = 3;
> +			break;
> +		case OMAP_USBHS_REV2:
> +			omap->nports = 2;
> +			break;
> +		default:
> +			omap->nports = OMAP3_HS_USB_PORTS;
> +			dev_dbg(dev,
> +			"USB HOST Rev:0x%d not recognized, assuming %d ports\n",

    Please indent the string to the right somewhat, as it was before.

WBR, Sergei

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