On Tue, Apr 10, 2018 at 02:38:53PM +0900, Yoshihiro Shimoda wrote:
> This patch fixes an issue that this driver ignores errors other than
> the non-existence of the device, f.e. a memory allocation failure
> in devm_phy_get(). So, this patch replaces devm_phy_get() with
> devm_phy_optional_get().
>
> Reported-by: Simon Horman <horms+renesas@xxxxxxxxxxxx>
> Fixes: 279d4bc64060 ("usb: gadget: udc: renesas_usb3: add support for generic phy")
> Cc: <stable@xxxxxxxxxxxxxxx> # v4.15+
> Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@xxxxxxxxxxx>
Reviewed-by: Simon Horman <horms+renesas@xxxxxxxxxxxx>
> ---
> Remarks:
> - A new file in v2
>
> drivers/usb/gadget/udc/renesas_usb3.c | 8 +++++---
> 1 file changed, 5 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/usb/gadget/udc/renesas_usb3.c b/drivers/usb/gadget/udc/renesas_usb3.c
> index 233bc04..0e70163 100644
> --- a/drivers/usb/gadget/udc/renesas_usb3.c
> +++ b/drivers/usb/gadget/udc/renesas_usb3.c
> @@ -2636,9 +2636,11 @@ static int renesas_usb3_probe(struct platform_device *pdev)
> * This is optional. So, if this driver cannot get a phy,
> * this driver will not handle a phy anymore.
> */
> - usb3->phy = devm_phy_get(&pdev->dev, "usb");
> - if (IS_ERR(usb3->phy))
> - usb3->phy = NULL;
> + usb3->phy = devm_phy_optional_get(&pdev->dev, "usb");
> + if (IS_ERR(usb3->phy)) {
> + ret = PTR_ERR(usb3->phy);
> + goto err_add_udc;
> + }
>
> pm_runtime_enable(&pdev->dev);
> ret = usb_add_gadget_udc(&pdev->dev, &usb3->gadget);
> --
> 1.9.1
>
