On Tue, Feb 23, 2016 at 10:20 PM, Peter Chen <hzpeterchen@xxxxxxxxx> wrote: > Oh, you said it is called before. > > http://www.spinics.net/lists/linux-usb/msg136714.html Yes, I have enabled runtime pm previously. Sorry for the confusion. > If you make sure the neither .runtime_suspend at chipidea driver > nor mxs_phy_suspend at mxs driver are called, it means the USB HUB > can never be suspended, then the kernel command line is the only way. Yes, passing 'usbcore.autosuspend=-1' is the only reliable method I see so far. > Care to test external USB HUB with i.mx28 evk? I would like to know if it > is the HUB's issue. Afaik, i.mx28 has no such bug when the bus is > suspended but the PHY is still active. How do I test this? -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
