From 996f8471b103642312b3fb83365f5f9dd617b13e Mon Sep 17 00:00:00 2001
From: Hans Petter Selasky <hselasky@FreeBSD.org>
Date: Tue, 10 Mar 2015 16:06:07 +0000
Subject: [PATCH] Lock softc before clearing bits.

Found by:	Dmitry Luhtionov <dmitryluhtionov@gmail.com>
MFC after:	1 week
---
 sys/dev/usb/input/uhid.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sys/dev/usb/input/uhid.c b/sys/dev/usb/input/uhid.c
index ece5e9573309..b0fe3a012845 100644
--- a/sys/dev/usb/input/uhid.c
+++ b/sys/dev/usb/input/uhid.c
@@ -518,7 +518,9 @@ uhid_open(struct usb_fifo *fifo, int fflags)
 	 */
 	if (fflags & FREAD) {
 		/* reset flags */
+		mtx_lock(&sc->sc_mtx);
 		sc->sc_flags &= ~UHID_FLAG_IMMED;
+		mtx_unlock(&sc->sc_mtx);
 
 		if (usb_fifo_alloc_buffer(fifo,
 		    sc->sc_isize + 1, UHID_FRAME_NUM)) {