Comment 0 for bug 1890222

[Impact]
Current hisi_sec2 driver only allows 2 threads for accelerator but cpu stress test requires more then 50 threads. We have disabled hisi_sec2 temporarily for 20.04.1. Hisilicon proposes a simple patch on upstream mailing list to enlarge the capability.

[Fix]
https://<email address hidden>/msg43093.html

[Test]
$ lsmod | grep hisi_sec2 # make sure hisi_sec2 loaded
$ sudo stress-ng --aggressive --verify --timeout 330 --metrics-brief --tz --times --af-alg 0
$ echo $?

[Regression Potential]
This driver is only loaded on Hisilicon Hi1620 machines. Low risk for other platform.