Hi, i am new to this list because i have a strange problem. We have an embedded board based on the omap3-design with a rs485. With kernel 3.5 it works fine. Since 3.5 is ancient we are noe trying to get a new kernel up an running what is 5.8. I turns out that the rs485 has issues (it seems a lot of ppl have the same issue also with other boards). We enable the rs485 via ioctl() and nothing seems to work. Several restarts, playing with Marcin Niestroyj's rs485config it suddenly works. (yes hardware is ok, works with older kernel). Can someone give me a hind where i should search. I am not a kernel expert and there have been a lot of small changes that i do not understand. I am pretty sure that it is not a major issue (famous last words) but i am out of clue where to search. CU
