Patch "usb: dwc3: gadget: properly account queued requests" has been added to the 4.8-stable tree

Patch "usb: dwc3: gadget: properly account queued requests" has been added to the 4.8-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    usb: dwc3: gadget: properly account queued requests

to the 4.8-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     usb-dwc3-gadget-properly-account-queued-requests.patch
and it can be found in the queue-4.8 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From a9c3ca5fae6bf73770f0576eaf57d5f1305ef4b3 Mon Sep 17 00:00:00 2001
From: Felipe Balbi <felipe.balbi@linux.intel.com>
Date: Wed, 5 Oct 2016 14:24:37 +0300
Subject: usb: dwc3: gadget: properly account queued requests

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

commit a9c3ca5fae6bf73770f0576eaf57d5f1305ef4b3 upstream.

Some requests could be accounted for multiple
times. Let's fix that so each and every requests is
accounted for only once.

Fixes: 55a0237f8f47 ("usb: dwc3: gadget: use allocated/queued reqs for LST bit")
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/usb/dwc3/gadget.c |    7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -789,6 +789,7 @@ static void dwc3_prepare_one_trb(struct
 		req->trb = trb;
 		req->trb_dma = dwc3_trb_dma_offset(dep, trb);
 		req->first_trb_index = dep->trb_enqueue;
+		dep->queued_requests++;
 	}
 
 	dwc3_ep_inc_enq(dep);
@@ -841,8 +842,6 @@ static void dwc3_prepare_one_trb(struct
 
 	trb->ctrl |= DWC3_TRB_CTRL_HWO;
 
-	dep->queued_requests++;
-
 	trace_dwc3_prepare_trb(dep, trb);
 }
 
@@ -1963,7 +1962,9 @@ static int __dwc3_cleanup_done_trbs(stru
 	unsigned int		s_pkt = 0;
 	unsigned int		trb_status;
 
-	dep->queued_requests--;
+	if (req->trb == trb)
+		dep->queued_requests--;
+
 	trace_dwc3_complete_trb(dep, trb);
 
 	/*


Patches currently in stable-queue which might be from felipe.balbi@linux.intel.com are

queue-4.8/usb-dwc3-gadget-properly-account-queued-requests.patch