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/tools/build/feature/test-lzma.c

#include <lzma.h>

int main(void)
{
	lzma_stream strm = LZMA_STREAM_INIT;
	int ret;

	ret = lzma_stream_decoder(&strm, UINT64_MAX, LZMA_CONCATENATED);
	return ret ? -1 : 0;
}