I'm running next-20140508 kernel on imx6q-sabresd board with USB mouse/keyboard connected to OTG port. It works well on 3.15-rc but is broken on recent linux-next kernel with the message like below. ... usb 1-1: device v413c p2107 is not supported hub 1-0:1.0: unable to enumerate USB device on port 1 With the help from Peter, I found that the issue shows up only when CONFIG_USB_OTG_FSM is enabled. The option is enabled by commit 8fd2f1f (ARM: imx_v6_v7_defconfig: Enable drivers for i.MX51 USB Host support.) from IMX tree. I guess this is a sign that chipidea otg_fsm driver is buggy? I do not think dropping CONFIG_USB_OTG_FSM selection from imx_v6_v7_defconfig is a solution, and we need to fix the issue in usb driver, right? Shawn -- 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
