usb: dwc3: gadget: Refactor preparing extra TRB

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When the driver prepares the extra TRB, it uses bounce buffer. If we
just add a new parameter to dwc3_prepare_one_trb() to indicate this,
then we can refactor and simplify the driver quite a bit.
dwc3_prepare_one_trb() also checks if a request had been moved to the
started list. This is a prerequisite to subsequence patches improving
the handling of extra TRBs.

Signed-off-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@kernel.org>

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Thinh Nguyen 2020-09-24 01:21:30 -07:00 • committed by Felipe Balbi

parent 690e5c2dc2

commit 2b80357b77

1 changed files with 25 additions and 68 deletions

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drivers/usb/dwc3/gadget.c

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