Hi Tobias, We have already some triggers that accomplish that by introducing a custom sysfs file. It seems less intrusive to do the same for ledtrig-disk.c. You could also try to make this a generic feature for all LED triggers. On 3/8/20 3:27 PM, Tobias Schramm wrote: > This commit allows inversion of triggers by appending "-inverted" to the > name of a trigger. > > This can be useful when dealing with device that lack separate LEDs for > indicating e.g. disk activity. With this commit applied the power LED > can be used as a disk activity indicator by setting its default state to > on and using the "disk-activity-inverted" trigger. The LED will then turn > off briefly when there is disk activity. > > Signed-off-by: Tobias Schramm <t.schramm@xxxxxxxxxxx> -- Best regards, Jacek Anaszewski