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Message-Id: <20210512144844.678322700@linuxfoundation.org>
Date: Wed, 12 May 2021 16:44:30 +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 5.12 224/677] fotg210-udc: Remove a dubious condition leading to fotg210_done
From: Fabian Vogt <fabian@...ter-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@...ter-vogt.de>
Link: https://lore.kernel.org/r/20210324141115.9384-4-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 | 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 345827cf1b64..a3ad93bfd256 100644
--- a/drivers/usb/gadget/udc/fotg210-udc.c
+++ b/drivers/usb/gadget/udc/fotg210-udc.c
@@ -379,8 +379,7 @@ 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);
--
2.30.2
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