Hi Marius, +cc linux-hwmon, lkml On 18/04/23 23:06, Mariusz Białończyk wrote: > Hi Chris, > I discovered by accident that my dmesg is telling me: > [Mon Apr 17 19:08:59 2023] adt7475 19-002e: Error configuring pwm polarity > [Mon Apr 17 19:08:59 2023] adt7475 19-002e: ADT7473 device, revision 1 > > motherboard: > DMI: System manufacturer System Product Name/M4A785TD-V EVO, BIOS 2105 07/23/2010 > > Is this something i need to be afraid, or it's nothing serious? It's probably harmless, unless your board is intentionally setting the pwm-active-state (which I suspect it won't be as your BIOS is probably taking care of that if required). I suspect it's more a case of the code not handling the absence of a device tree which the check for -EINVAL was supposed to deal with. There's an outside chance that there is a problem on the I2C bus but that would require your platform to be actively using the pwm polarity feature via a device tree (unlikely outside of embedded devices). I think it'd still be a good idea to squash the errant warning so genuine errors are caught. I'll see if I can provoke the issue on devices I have access to. Are you in a position to try a patch if I come up with one?
