Hi, Here are v2 patches to get rid of pm_runtime_irq_safe() for the 8250_omap driver. Based on comments from Andy and Johan, I improved a bunch of things as listed below. For removing the pm_runtime_irq_safe() usage, serial TX is the last remaining issue. We deal with TX by waking up the port and returning 0 bytes written from write_room() and write() if the port is not available because of PM runtime autoidle. This series also removes the dependency to Andy's pending generic serial layer PM runtime patches, and hopefully makes that work a bit easier :) Regards, Tony Changes since v1: - Separated out line discipline patches, n_tty -EAGAIN change I still need to retest - Changed prep_tx() to more generic wakeup() as also flow control needs it - Changed over to using wakeup() with device driver runtime PM instead of write_room() - Added runtime_suspended flag for drivers and generic serial layer PM to use Tony Lindgren (4): serial: core: Add wakeup() and start_pending_tx() for power management serial: 8250: Implement wakeup for TX and use it for 8250_omap serial: 8250_omap: Require a valid wakeirq for deeper idle states serial: 8250_omap: Drop the use of pm_runtime_irq_safe() Documentation/driver-api/serial/driver.rst | 9 ++++ drivers/tty/serial/8250/8250_omap.c | 42 +++++++++++----- drivers/tty/serial/8250/8250_port.c | 35 +++++++++++++- drivers/tty/serial/serial_core.c | 56 +++++++++++++++++++++- include/linux/serial_core.h | 3 ++ 5 files changed, 131 insertions(+), 14 deletions(-) -- 2.33.0
