* Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx> [180611 17:14]: > Tony, Sebastian, JFYI. > > This is exact example why we have to disable runtime PM for kernel > console. Hmm well we need to do multiple things. How about the following steps to deal with these issues: 1. Fix $subject driver by adding pm_runtime_irq_safe() to it if it can deal with it or revert the patch 2. Make console runtime PM optional with console.idle or similar command line parameter 3. Remove pm_runtime_irq_safe() requirement from the 8250 drivers 4. Make runtime PM generic to the serial layer I think you've already done most of this? Just let's try to do in a way that also maintains the runtime PM functionality while we do it :) > Phil, I suppose the series [1] fixes an issue. > > [1]: https://www.spinics.net/lists/linux-serial/msg30335.html To me it seems we could change patch "serial: 8250_port: Don't use power management for kernel console" to make it use console.idle as in #2 above? Andy, did you already post the serial runtime PM changes somewhere or are they just in your git tree? I guess that's already pretty much #3 and 4 above. Regards, Tony -- 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
