diff options
| author | Fabian Vogt <fabian@ritter-vogt.de> | 2021-03-24 15:11:15 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-05-22 10:38:23 +0200 |
| commit | 62455d7943c1ac49911fcda6d1a7bf4f8edb06be (patch) | |
| tree | b06f40f8fcf29b450d678f9ee2ac445028309c94 /drivers/usb | |
| parent | 257f1877074dc58b0a927628ae57294cc109aeee (diff) | |
fotg210-udc: Complete OUT requests on short packets
[ Upstream commit 75bb93be0027123b5db6cbcce89eb62f0f6b3c5b ]
A short packet indicates the end of a transfer and marks the request as
complete.
Fixes: b84a8dee23fd ("usb: gadget: add Faraday fotg210_udc driver")
Signed-off-by: Fabian Vogt <fabian@ritter-vogt.de>
Link: https://lore.kernel.org/r/20210324141115.9384-8-fabian@ritter-vogt.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/gadget/udc/fotg210-udc.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/usb/gadget/udc/fotg210-udc.c b/drivers/usb/gadget/udc/fotg210-udc.c index b2910bc65e51..9e102ba9cf66 100644 --- a/drivers/usb/gadget/udc/fotg210-udc.c +++ b/drivers/usb/gadget/udc/fotg210-udc.c @@ -856,12 +856,16 @@ static void fotg210_out_fifo_handler(struct fotg210_ep *ep) { struct fotg210_request *req = list_entry(ep->queue.next, struct fotg210_request, queue); + int disgr1 = ioread32(ep->fotg210->reg + FOTG210_DISGR1); fotg210_start_dma(ep, req); - /* finish out transfer */ + /* Complete the request when it's full or a short packet arrived. + * Like other drivers, short_not_ok isn't handled. + */ + if (req->req.length == req->req.actual || - req->req.actual < ep->ep.maxpacket) + (disgr1 & DISGR1_SPK_INT(ep->epnum - 1))) fotg210_done(ep, req, 0); } |