Hi I've been trying to find a suitable solution for this problem for many months now. Meanwhile I've implemented an ugly hack, that's in the mainline since about 2.6.20, but now there's another platform with the same "feature" and I'd really love to avoid repeating that hack again... There are NAS devices from Buffalo from the Linkstation family, that have an AVR microcontroller doing system power management (power on / off / reset / LEDs / buttons / timer / watchdog / ...) and connected to the main CPU over a UART. It would be all fine and everything can be implemented in the user-space, except power-off / reset. It is really like that - you send a byte to the AVR over the UART and you are dead or reset. Obviously, this should be done from arch low-level kernel code and cannot be done from userspace. Even worse, there are PPC, ARM, and MIPS Linkstations. There have been a few "kernel serial API" patches floating around, none of them got far enough, mostly they were rejected with "use line-discipline" sort of argument. What should Linkstation do? Thanks Guennadi --- Guennadi Liakhovetski - To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
