I have annoyed kernel maintainers with my patches, because I didn't know that such group exists. So before I start annoying them again I ask here. For longhaul cpufreq driver it is necessary to stop PCI bus and processor for >=1ms to let processor sync internal PLL. This is start: + freeze_processes(); + device_suspend(PMSG_FREEZE); + clear_bus_master(); + local_irq_save(flags); This is end: + local_irq_restore(flags); + restore_bus_master(); + device_resume(); + thaw_processes(); freeze_processes() will let me do anything in this time? No more "scheduling while atomic" messages? PMSG_FREEZE is not implemented yet for most devices, but "will fix later". If I'm using this do I have to still poke PIC registers or all device interrupts will be disabled? Will tick (INT0) interrupt be left enabled (i'm depending on this - this int wakeup processor)? Can I use PM for this? It works - but is this proper? Rafal ---------------------------------------------------------------------- INTERIA.PL dla kobiet... >>> http://link.interia.pl/f193b -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
