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Message-Id: <20210520092137.471543094@linuxfoundation.org>
Date: Thu, 20 May 2021 11:19:13 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org, Fabian Vogt <fabian@...ter-vogt.de>,
Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.19 184/425] fotg210-udc: Fix EP0 IN requests bigger than two packets
From: Fabian Vogt <fabian@...ter-vogt.de>
[ Upstream commit 078ba935651e149c92c41161e0322e3372cc2705 ]
For a 134 Byte packet, it sends the first two 64 Byte packets just fine,
but then notice that less than a packet is remaining and call fotg210_done
without actually sending the rest.
Fixes: b84a8dee23fd ("usb: gadget: add Faraday fotg210_udc driver")
Signed-off-by: Fabian Vogt <fabian@...ter-vogt.de>
Link: https://lore.kernel.org/r/20210324141115.9384-3-fabian@ritter-vogt.de
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
drivers/usb/gadget/udc/fotg210-udc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/usb/gadget/udc/fotg210-udc.c b/drivers/usb/gadget/udc/fotg210-udc.c
index d698d4ab121b..a35a55eff429 100644
--- a/drivers/usb/gadget/udc/fotg210-udc.c
+++ b/drivers/usb/gadget/udc/fotg210-udc.c
@@ -824,7 +824,7 @@ static void fotg210_ep0in(struct fotg210_udc *fotg210)
if (req->req.length)
fotg210_start_dma(ep, req);
- if ((req->req.length - req->req.actual) < ep->ep.maxpacket)
+ if (req->req.actual == req->req.length)
fotg210_done(ep, req, 0);
} else {
fotg210_set_cxdone(fotg210);
--
2.30.2
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