From: Fabian Vogt fabian@ritter-vogt.de
[ Upstream commit c7f755b243494d6043aadcd9a2989cb157958b95 ]
When the EP0 IN request was not completed but less than a packet sent, it would complete the request successfully. That doesn't make sense and can't really happen as fotg210_start_dma always sends min(length, maxpkt) bytes.
Fixes: b84a8dee23fd ("usb: gadget: add Faraday fotg210_udc driver") Signed-off-by: Fabian Vogt fabian@ritter-vogt.de Link: https://lore.kernel.org/r/20210324141115.9384-4-fabian@ritter-vogt.de Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/usb/gadget/udc/fotg210-udc.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/usb/gadget/udc/fotg210-udc.c b/drivers/usb/gadget/udc/fotg210-udc.c index 1eda6fc750c1..d0a9ce7d0635 100644 --- a/drivers/usb/gadget/udc/fotg210-udc.c +++ b/drivers/usb/gadget/udc/fotg210-udc.c @@ -385,8 +385,7 @@ static void fotg210_ep0_queue(struct fotg210_ep *ep, } if (ep->dir_in) { /* if IN */ fotg210_start_dma(ep, req); - if ((req->req.length == req->req.actual) || - (req->req.actual < ep->ep.maxpacket)) + if (req->req.length == req->req.actual) fotg210_done(ep, req, 0); } else { /* OUT */ u32 value = ioread32(ep->fotg210->reg + FOTG210_DMISGR0);