On Sun, Jul 3, 2022 at 7:02 PM Lino Sanfilippo <LinoSanfilippo@xxxxxx> wrote: > > From: Lino Sanfilippo <l.sanfilippo@xxxxxxxxxx> > > Currently the documentation claims that a maximum of 1000 msecs is allowed > for RTS delays. However nothing actually checks the values read from device > tree/ACPI and so it is possible to set much higher values. > > There is already a maximum of 100 ms enforced for RTS delays that are set > via the uart TIOCSRS485 ioctl. To be consistent with that use the same > limit for DT/ACPI values. > > Although this change is visible to userspace the risk of breaking anything > when reducing the max delays from 1000 to 100 ms should be very low, since > 100 ms is already a very high maximum for delays that are usually rather in > the usecs range. Yeah, something similar is what you need to add to the previous patch IIUC. -- With Best Regards, Andy Shevchenko
