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>

1 files changed, 1 insertions, 1 deletions

diff --git a/mausezahn.8 b/mausezahn.8
index 9206803..3af018c 100644
--- a/mausezahn.8
+++ b/mausezahn.8
@@ -780,7 +780,7 @@ using the flags \-a and \-b.
 .PP
 mausezahn provides a simple interface to the 802.1D BPDU frame format (used to
 create the Spanning Tree in bridged networks). By default, standard IEEE 802.1D
-(STP) BPDUs are sent and it is assumed that your computer wants to become the
+BPDUs are sent and it is assumed that your computer wants to become the
 root bridge (rid=bid). Optionally the 802.3 destination address can be a
 specified MAC address, broadcast, own MAC, or Cisco's PVST+ MAC address. The
 destination MAC can be specified using the \-b command which, besides MAC