Re: [PATCH v2 17/18] usb: dwc3: qcom: Detect DWC3 DT-nodes with "usb"-prefixed names

[Bjorn Andersson <bjorn.andersson@linaro.org>]

On Wed 11 Nov 03:15 CST 2020, Serge Semin wrote:

> In accordance with the USB HCD/DRD schema all the USB controllers are
> supposed to have DT-nodes named with prefix "^usb(@.*)?".  Since the
> existing DT-nodes will be renamed in a subsequent patch let's first make
> sure the DWC3 Qualcomm driver supports them and second falls back to the
> deprecated naming so not to fail on the legacy DTS-files passed to the
> newer kernels.
> 
> Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>

Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>

Regards,
Bjorn

> ---
>  drivers/usb/dwc3/dwc3-qcom.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/usb/dwc3/dwc3-qcom.c b/drivers/usb/dwc3/dwc3-qcom.c
> index e1e78e9824b1..661263e62f21 100644
> --- a/drivers/usb/dwc3/dwc3-qcom.c
> +++ b/drivers/usb/dwc3/dwc3-qcom.c
> @@ -519,7 +519,8 @@ static int dwc3_qcom_of_register_core(struct platform_device *pdev)
>  	struct device		*dev = &pdev->dev;
>  	int			ret;
>  
> -	dwc3_np = of_get_child_by_name(np, "dwc3");
> +	dwc3_np = of_get_child_by_name(np, "usb") ?:
> +		  of_get_child_by_name(np, "dwc3");
>  	if (!dwc3_np) {
>  		dev_err(dev, "failed to find dwc3 core child\n");
>  		return -ENODEV;
> -- 
> 2.28.0
>