usb: dwc3: gadget: Avoid continuing preparing TRBs during teardown

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Add checks similar to dwc3_gadget_ep_queue() before kicking off
transfers after getting an endpoint completion event.   Since cleaning
up completed requests will momentarily unlock dwc->lock, there is a
chance for a sequence like pullup disable to be executed.  This can
lead to preparing a TRB, which will be removed by the pullup disable
routine.

Signed-off-by: Wesley Cheng <wcheng@codeaurora.org>
Link: https://lore.kernel.org/r/1616146285-19149-2-git-send-email-wcheng@codeaurora.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Wesley Cheng 2021-03-19 02:31:24 -07:00 • committed by Greg Kroah-Hartman

parent 5e7121723d

commit 02fa4b9802

1 changed files with 5 additions and 0 deletions

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drivers/usb/dwc3/gadget.c

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