linux-kernel - Re: [PATCH] usb: dwc3: st: Fix node's child name

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Message-ID: <87o7v0g860.fsf@balbi.sh>
Date:   Tue, 27 Sep 2022 18:15:18 +0300
From:   Felipe Balbi <felipe@...bi.sh>
To:     patrice.chotard@...s.st.com
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Serge Semin <Sergey.Semin@...kalelectronics.ru>,
        linux-arm-kernel@...ts.infradead.org, linux-usb@...r.kernel.org,
        linux-kernel@...r.kernel.org, Jerome Audu <jerome.audu@...com>
Subject: Re: [PATCH] usb: dwc3: st: Fix node's child name


<patrice.chotard@...s.st.com> writes:

> From: Patrice Chotard <patrice.chotard@...s.st.com>
>
> Update node's child name from "dwc3" to "usb", this fixes
> the following issue:
>
> [3.773852] usb-st-dwc3 8f94000.dwc3: failed to find dwc3 core node
>
> Fixes: 3120910a099b ("ARM: dts: stih407-family: Harmonize DWC USB3 DT nodes name")
>
> Reported-by: Jerome Audu <jerome.audu@...com>
> Signed-off-by: Patrice Chotard <patrice.chotard@...s.st.com>
> ---
>  drivers/usb/dwc3/dwc3-st.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/usb/dwc3/dwc3-st.c b/drivers/usb/dwc3/dwc3-st.c
> index 166b5bde45cb..6c14a79279f9 100644
> --- a/drivers/usb/dwc3/dwc3-st.c
> +++ b/drivers/usb/dwc3/dwc3-st.c
> @@ -251,7 +251,7 @@ static int st_dwc3_probe(struct platform_device *pdev)
>  	/* Manage SoftReset */
>  	reset_control_deassert(dwc3_data->rstc_rst);
>  
> -	child = of_get_child_by_name(node, "dwc3");
> +	child = of_get_child_by_name(node, "usb");

there could be DTBs in the wild which have `dwc3' as the child name. It
seems to me that you should try both names, instead.

-- 
balbi