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(parent: 4244ba0) | patch
usb: gadget: Introduce usb_request->is_last
authorThinh Nguyen <Thinh.Nguyen@synopsys.com>
Wed, 6 May 2020 02:46:13 +0000 (19:46 -0700)
committerFelipe Balbi <balbi@kernel.org>
Mon, 25 May 2020 08:09:41 +0000 (11:09 +0300)
commit5469fd64efcfbc2b9b2edb92c4f906912736d5b0
tree61ba3ccfec8520c911a57705184255311fc9fff5tree | snapshot
parent4244ba02edb850f880fafe178abccd9231cb0e4acommit | diff
usb: gadget: Introduce usb_request->is_last

To take advantage of DWC3 internal TRB prefetch and cache for
performance, inform the controller the last request with stream_id
before switching to a different stream transfer. This allows the
controller to maintain its transfer burst within the stream ID.

Introduce the usb-request is_last field to help inform the DWC3
controller of this.

Signed-off-by: Thinh Nguyen <thinhn@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
include/linux/usb/gadget.h diff | blob | history
Domain: System / Kernel;