[LTP] [PATCH 2/2] device_drivers/uart01: Add uart01 test

Cyril Hrubis
2020-03-30T15:21:22Z

Hi!
> Thank you porting the serialcheck.c into LTP
> I am sorry to find the serialcheck have not LOOPBACK mode support
> the LOOPBACK mode is a better test than HW flow , because most machine's
> uart have not connect the Rx & TX
> in LOOPBACK mode. we test the uart port directly, So we can test one uart
> port Rx and Tx functions at the same time .
> here is the diff serialcheck with loopback patch
> So I'd prefer use loopback mode test the uart in case.
> $ diff serialcheck.c serialcheck-with-loopback.c

Thanks for the hint, I had no idea that subset serial port hardware has
a loopback test that could be enabled in modem control register which is
meant for testing. I will have a closer look tomorrow.

--
Cyril Hrubis
chrubis@suse.cz