Re: [PATCH v7 07/13] usb: chipidea: fix phy handling

Peter Chen
2014-11-17T07:00:34Z

On Fri, Nov 14, 2014 at 04:25:57PM +0100, Antoine Tenart wrote:
> The generic platform device for CI drivers is probed by calling
> ci_hdrc_probe. This is not the same device as the one for the specific
> driver, so the of_node isn't the one we're looking into.
>
> This result in not being able to probe the phys. Since all CI driver are
> retrieving their phys in the specific code, this didn't impact any of
> them yet.
>
> Fixes it using the right of node pointer, by using dev->parent instead
> of dev in phy get functions.

It is a correct fix, but the description need to be refined, it is
not related to "of_node" or "node", it is related child/parent device.

>
> Signed-off-by: Antoine Tenart <antoine.tenart@free-electrons.com>
> ---
> drivers/usb/chipidea/core.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c
> index ba0ac2723098..36318c85ad65 100644
> --- a/drivers/usb/chipidea/core.c
> +++ b/drivers/usb/chipidea/core.c
> @@ -654,8 +654,8 @@ static int ci_hdrc_probe(struct platform_device *pdev)
> } else if (ci->platdata->usb_phy) {
> ci->usb_phy = ci->platdata->usb_phy;
> } else {
> - ci->phy = devm_phy_get(dev, "usb-phy");
> - ci->usb_phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB2);
> + ci->phy = devm_phy_get(dev->parent, "usb-phy");
> + ci->usb_phy = devm_usb_get_phy(dev->parent, USB_PHY_TYPE_USB2);
>
> /* if both generic PHY and USB PHY layers aren't enabled */
> if (PTR_ERR(ci->phy) == -ENOSYS &&
> --
> 2.1.0
>

--

Best Regards,
Peter Chen