Re: [PATCH 11/12] USB: ehci-omap: Try to get PHY even if not in PHYmode

[Alan Stern]

On Tue, 12 Mar 2013, Roger Quadros wrote:

> Even when not in PHY mode, the USB device on the port (e.g. HUB)
> might need resources like RESET which can be modelled as a PHY
> device. So try to get the PHY device in any case.
> 
> Signed-off-by: Roger Quadros <rogerq@xxxxxx>
> CC: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>

Acked-by: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>

>  		/* get the PHY device */
>  		if (dev->of_node)
>  			phy = devm_usb_get_phy_by_phandle(dev, "phys", i);
>  		else
>  			phy = devm_usb_get_phy_dev(dev, i);
>  		if (IS_ERR(phy) || !phy) {
> +			/* Don't bail out if PHY is not absolutely necessary */
> +			if (pdata->port_mode[i] != OMAP_EHCI_PORT_MODE_PHY)
> +				continue;
> +
>  			ret = IS_ERR(phy) ? PTR_ERR(phy) : -ENODEV;
>  			dev_err(dev, "Can't get PHY device for port %d: %d\n",
>  					i, ret);

Felipe, this is a strange interface.  Why do we sometimes get an 
error-pointer and sometimes get just NULL?  Why not always an 
error-pointer?

Alan Stern

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