usb: dwc3: gadget: Keep TRBs in request order

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If we couldn't finish preparing all the TRBs of a request, don't prepare
the next request. Otherwise, the TRBs order will be mixed up and the
controller will process the wrong TRB. This is a corner case where
there's not enough TRBs for a request that needs the extra TRB but
there's still 1 available TRB in the pool.

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

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Thinh Nguyen 2020-09-30 17:44:32 -07:00 • committed by Felipe Balbi

parent 8dbbe48c7a

commit 346a15cdf6

1 changed files with 6 additions and 3 deletions

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9

drivers/usb/dwc3/gadget.c

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