linux-kernel - [PATCH 4.19 004/110] usb: dwc3: gadget: fix ISOC TRB type on unaligned transfers

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Message-Id: <20181129135921.415038461@linuxfoundation.org>
Date:   Thu, 29 Nov 2018 15:11:35 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Felipe Balbi <felipe.balbi@...ux.intel.com>
Subject: [PATCH 4.19 004/110] usb: dwc3: gadget: fix ISOC TRB type on unaligned transfers

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Felipe Balbi <felipe.balbi@...ux.intel.com>

commit 2fc6d4be35fb1e262f209758e25bfe2b7a113a7f upstream.

When chaining ISOC TRBs together, only the first ISOC TRB should be of
type ISOC_FIRST, all others should be of type ISOC. This patch fixes
that.

Fixes: c6267a51639b ("usb: dwc3: gadget: align transfers to wMaxPacketSize")
Cc: <stable@...r.kernel.org> # v4.11+
Signed-off-by: Felipe Balbi <felipe.balbi@...ux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/usb/dwc3/gadget.c |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -1072,7 +1072,7 @@ static void dwc3_prepare_one_trb_sg(stru
 			/* Now prepare one extra TRB to align transfer size */
 			trb = &dep->trb_pool[dep->trb_enqueue];
 			__dwc3_prepare_one_trb(dep, trb, dwc->bounce_addr,
-					maxp - rem, false, 0,
+					maxp - rem, false, 1,
 					req->request.stream_id,
 					req->request.short_not_ok,
 					req->request.no_interrupt);
@@ -1116,7 +1116,7 @@ static void dwc3_prepare_one_trb_linear(
 		/* Now prepare one extra TRB to align transfer size */
 		trb = &dep->trb_pool[dep->trb_enqueue];
 		__dwc3_prepare_one_trb(dep, trb, dwc->bounce_addr, maxp - rem,
-				false, 0, req->request.stream_id,
+				false, 1, req->request.stream_id,
 				req->request.short_not_ok,
 				req->request.no_interrupt);
 	} else if (req->request.zero && req->request.length &&
@@ -1132,7 +1132,7 @@ static void dwc3_prepare_one_trb_linear(
 		/* Now prepare one extra TRB to handle ZLP */
 		trb = &dep->trb_pool[dep->trb_enqueue];
 		__dwc3_prepare_one_trb(dep, trb, dwc->bounce_addr, 0,
-				false, 0, req->request.stream_id,
+				false, 1, req->request.stream_id,
 				req->request.short_not_ok,
 				req->request.no_interrupt);
 	} else {