usb: raw-gadget: return USB_GADGET_DELAYED_STATUS from setup()

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Return USB_GADGET_DELAYED_STATUS from the setup() callback for 0-length
transfers as a workaround to stop some UDC drivers (e.g. dwc3) from
automatically proceeding with the status stage.

This workaround should be removed once all UDC drivers are fixed to
always delay the status stage until a response is queued to EP0.

Signed-off-by: Andrey Konovalov <andreyknvl@gmail.com>
Link: https://lore.kernel.org/r/c56077322f0d3fc6d504092a266cb89d75701087.1693237258.git.andreyknvl@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Andrey Konovalov 2023-08-28 17:43:03 +02:00 • committed by Greg Kroah-Hartman

parent 3551ff7c5c

commit cf9f7a6ee7

1 changed files with 11 additions and 0 deletions

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drivers/usb/gadget/legacy/raw_gadget.c

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