linux-kernel - Re: [PATCH v2] usb: dwc3: st: Rely on child's compatible instead of name

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Message-ID: <990c5782-2206-c012-d770-966887fd4515@foss.st.com>
Date:   Fri, 30 Sep 2022 16:18:27 +0200
From:   Patrice CHOTARD <patrice.chotard@...s.st.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
CC:     Felipe Balbi <balbi@...nel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-usb@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Jerome Audu <jerome.audu@...com>,
        Felipe Balbi <felipe@...bi.sh>
Subject: Re: [PATCH v2] usb: dwc3: st: Rely on child's compatible instead of
 name



On 9/30/22 16:16, Patrice CHOTARD wrote:
> 
> 
> On 9/30/22 13:48, Greg Kroah-Hartman wrote:
>> On Fri, Sep 30, 2022 at 09:27:07AM +0200, patrice.chotard@...s.st.com wrote:
>>> From: Patrice Chotard <patrice.chotard@...s.st.com>
>>>
>>> To ensure that child node is found, don't rely on child's node name
>>> which can take different value, but on child's compatible name.
>>>
>>> Fixes: f5c5936d6b4d ("usb: dwc3: st: Fix node's child name")
>>>
>>> Cc: Jerome Audu <jerome.audu@...com>
>>> Reported-by: Felipe Balbi <felipe@...bi.sh>
>>> 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..fea5290de83f 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_compatible_child(node, "snps,dwc3");
>>>  	if (!child) {
>>>  		dev_err(&pdev->dev, "failed to find dwc3 core node\n");
>>>  		ret = -ENODEV;
>>> -- 
>>> 2.25.1
>>>
>>
>> This commit doesn't even apply to my tree.  What branch is it against?
>>
>> confused,
> 
> Sorry... a v3 will be send, rebased on correct branch.
> 
> Patrice
> 
>>
>> greg k-h