* Bin Liu <b-liu@xxxxxx> [170117 05:00]: > On Mon, Jan 16, 2017 at 03:54:29PM -0800, Tony Lindgren wrote: > > Anyways, for the -rc series oops, we can just leave out the WARN_ON > > parts for now until drivers/usb/musb/musb_cppi41.c is fixed too. > > Giving that cppi is a submodule inside the usb subsysytem and it does't > have separate power rail or clock, what is the benefit to adding runtime > PM in the cppi driver? Good question. We need at least minimal support to enable things for probe and then idle cppi41 properly if only cppi41.ko is loaded with no USB modules. But yeah now that musb does runtime PM based on the cable detection, we pretty much guarantee that cppi41 is always enabled when USB is in use. And if there are no other devices using cppi41 dma on davinci, we can simplify the PM runtime a bit for cppi41. Regards, Tony -- To unsubscribe from this list: send the line "unsubscribe dmaengine" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
