[PATCH v3] usb: gadget: fastboot: detach usb just before rebooting

[Marek Vasut]

On 1/10/23 09:33, Mattijs Korpershoek wrote:
> Hi Dario,

Hello everyone,

> Thank you for your patch.
> 
> On Sat, Jan 07, 2023 at 17:48, Dario Binacchi <dario.binacchi at amarulasolutions.com> wrote:
> 
>> The patch fixes the following error when updating a BSH SMM S2 board:
>> 3:72>Start Cmd:FB[-t 8000]: ucmd nand write ${loadaddr} nanddtb ${filesize}
>> 3:72>Okay (0.023s)
>> 3:72>Start Cmd:FB: reboot
>> 3:72>Fail Bulk(R):LIBUSB_ERROR_IO(0s)
>>
>> The "fastboot reboot" command detaches the USB when it still needs to be
>> used. So let's detach the USB just before the reset.
>>
>> CC: Mattijs Korpershoek <mkorpershoek at baylibre.com>
>> Fixes: 5f7e01e9d5d800 ("usb: gadget: fastboot: detach usb on reboot commands")
>> Suggested-by: Michael Trimarchi <michael at amarulasolutions.com>
>> Co-developed-by: Mattijs Korpershoek <mkorpershoek at baylibre.com>
>> Signed-off-by: Mattijs Korpershoek <mkorpershoek at baylibre.com>
>> Signed-off-by: Dario Binacchi <dario.binacchi at amarulasolutions.com>
> 
> I've re-ran this on my vim3l. This patch, alongside with an
> implementation of usb_gadget_ops.pullup() in
> drivers/usb/gadget/dwc2_udc_otg.c also fixes the issue described in
> commit 5f7e01e9d5d800 ("usb: gadget: fastboot: detach usb on reboot commands")
> 
> Tested-by Mattijs Korpershoek <mkorpershoek at baylibre.com>
> 
> I will submit the pullup() implementation on my end, indepently from
> this change.
> 
> Marek, is it possible to pick this up to resolve Dario's flashing problems?

Applied both to usb/master.

Thanks to both of you for figuring it all out, much appreciated!