现象

在原来 JetPack4.4 运行稳定的camera驱动，由于算法功能需要，升级到最新的JetPack4.6. 刚开始自测，功能一切正常，以为任务结束了。后来发现opencv只要打开，关闭重复三次以上，会出现运行不稳定，并且，只要打开失败后，就再不能再重新打开，除非重启。

日志显示

[ 223.465563] [RCE] vi5_hwinit: firmware CL2018101701 protocol version 2.2
[ 243.245517] [RCE] vi5_hwinit: firmware CL2018101701 protocol version 2.2
[ 266.613529] [RCE] vi5_hwinit: firmware CL2018101701 protocol version 2.2
[ 269.145484] tegra194-vi5 15c10000.vi: no reply from camera processor
[ 269.145646] tegra194-vi5 15c10000.vi: uncorr_err: request timed out after 2500 ms
[ 269.145823] tegra194-vi5 15c10000.vi: err_rec: attempting to reset the capture channel
[