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Lock softc before clearing bits.

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Found by:	Dmitry Luhtionov <dmitryluhtionov@gmail.com>
MFC after:	1 week
This commit is contained in:
Hans Petter Selasky 2015-03-10 16:06:07 +00:00
parent 276df218b9
commit 996f8471b1
1 changed files with 2 additions and 0 deletions
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2
sys/dev/usb/input/uhid.c
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@ -518,7 +518,9 @@ uhid_open(struct usb_fifo *fifo, int fflags)
*/ */
if (fflags & FREAD) { if (fflags & FREAD) {
/* reset flags */ /* reset flags */
mtx_lock(&sc->sc_mtx);
sc->sc_flags &= ~UHID_FLAG_IMMED; sc->sc_flags &= ~UHID_FLAG_IMMED;
mtx_unlock(&sc->sc_mtx);
if (usb_fifo_alloc_buffer(fifo, if (usb_fifo_alloc_buffer(fifo,
sc->sc_isize + 1, UHID_FRAME_NUM)) { sc->sc_isize + 1, UHID_FRAME_NUM)) {