45f9e9c4cb
previous rt_hw_context_switch might cause the
task switch handling error.
See
1a1a209e93 (diff-ba922e02206af6c52163f0c34a7e76e427b7ea22f791329b62f2069241c57778)
Signed-off-by: Huaqi Fang <578567190@qq.com>