[PATCH] usb: gadget: dwc2_udc_otg: set ep's desc during enable/disable

[Mattijs Korpershoek]

Hi Gary,

Thank you for your patch.

Marek Vasut <marex at denx.de> writes:

> On 1/6/22 16:21, Neil Armstrong wrote:
>> Hi,
>> 
>> On 06/01/2022 16:02, Gary Bisson wrote:
>>> Fastboot support has been broken on platforms using dwc2 controller
>>> since the gadget gets its max packet size from it.
>>> This patch is the equivalent of 723fd5668ff which fixed the same issue
>>> but for the chipidea controller.
>>>
>>> Fixes: 27c9141b111 ("usb: gadget: fastboot: use correct max packet size")
>>>
>>> Signed-off-by: Gary Bisson <gary.bisson at boundarydevices.com>
>>> ---
>>>   drivers/usb/gadget/dwc2_udc_otg.c | 2 ++
>>>   1 file changed, 2 insertions(+)
>>>
>>> diff --git a/drivers/usb/gadget/dwc2_udc_otg.c b/drivers/usb/gadget/dwc2_udc_otg.c
>>> index 2f318144421..fb10884755b 100644
>>> --- a/drivers/usb/gadget/dwc2_udc_otg.c
>>> +++ b/drivers/usb/gadget/dwc2_udc_otg.c
>>> @@ -655,6 +655,7 @@ static int dwc2_ep_enable(struct usb_ep *_ep,
>>>   		return -ESHUTDOWN;
>>>   	}
>>>   
>>> +	_ep->desc = desc;
>>>   	ep->stopped = 0;
>>>   	ep->desc = desc;
>> 
>> Indeed the _ep and ep was confusing when looking code
>> 
>>>   	ep->pio_irqs = 0;
>>> @@ -695,6 +696,7 @@ static int dwc2_ep_disable(struct usb_ep *_ep)
>>>   	/* Nuke all pending requests */
>>>   	nuke(ep, -ESHUTDOWN);
>>>   
>>> +	_ep->desc = NULL;
>>>   	ep->desc = 0;
>>>   	ep->stopped = 1;
>>>   
>>>
>> 
>> An off-tree patch removed from our Yukawa backlog, thanks !
>> 
>> Reviewed-by: Neil Armstrong <narmstrong at baylibre.com>
I can confirm this fixes flashing issues on VIM3/VIM3L boards when
flashing AOSP(yukawa) with fastboot.

Tested-by: Mattijs Korpershoek <mkorpershoek at baylibre.com>
>
> +CC Tom, can you pick this one for CURRENT 2022.01 release?
>
> Thank you