* Roger Quadros <rogerq@xxxxxx> [170216 05:44]: > +Chanwoo > > On 15/02/17 23:36, Tony Lindgren wrote: > > * Tony Lindgren <tony@xxxxxxxxxxx> [170215 13:01]: > >> * Roger Quadros <rogerq@xxxxxx> [170214 01:44]: > >>> You can enable dwc3 trace events. > >>> > >>> cd /sys/kernel/debug/tracing > >>> echo 1 > events/dwc3/enable > >>> echo 0 > events/dwc3/dwc3_readl/enable > >>> echo 0 > events/dwc3/dwc3_writel/enable > >>> echo 1 > free_buffer > >>> echo 2048 > buffer_size_kb > >> > >> For me the issue was I had to change my sysfs scripts to start doing > >> echo -n instead of just echo. Things are working for me now with Linux > >> next. > > > > Then in host mode after connecting a device, I see the following warnings > > with Linux next and lockdep enabled if host mode is forced with > > dr_mode = "host": BTW is dr_mode = "host" still needed or is the role switching close to working now? > > CONFIG_DEBUG_LOCKDEP=y > > CONFIG_DEBUG_ATOMIC_SLEEP=y > > Looks like extcon is calling the notifiers while atomic. (spinlocks held, IRQs disabled?) > Does this needs to be fixed at extcon layer or dwc3-omap should > execute the mailbox in a workqueue? Sounds like changing it in extcon might break unknown other drivers :) Regards, Tony -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
