HID: cp2112: fix sleep-while-atomic

A recent commit fixing DMA-buffers on stack added a shared transfer
buffer protected by a spinlock. This is broken as the USB HID request
callbacks can sleep. Fix this up by replacing the spinlock with a mutex.

Fixes: 1ffb3c40ffb5 ("HID: cp2112: make transfer buffers DMA capable")
Cc: stable <stable@vger.kernel.org>	# 4.9
Signed-off-by: Johan Hovold <johan@kernel.org>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

path: root/flowtop/Makefile

flowtop-libs =	-lGeoIP \
		-lurcu \
		-lnetfilter_conntrack \
		$(shell pkg-config --libs ncurses) \
		-lpthread \
		-lz

flowtop-objs =	xmalloc.o \
		ioops.o \
		oui.o \
		str.o \
		sig.o \
		sock.o \
		dev.o \
		link.o \
		hash.o \
		dissector_eth.o \
		dissector_80211.o \
		dissector.o \
		proto_none.o \
		tprintf.o \
		geoip.o \
		screen.o \
		flowtop.o

flowtop-eflags = $(shell pkg-config --cflags ncurses)