Hello, > 4.5.0+, which patches do you have on top of 4.5 vanilla ? No code patches, just the configuration and dts file for the board. > Also, can you try this patch: I tried it, but the result is the same. Sometimes I can see another entry in the log: g_serial gadget: suspend And there is a single instance where this is followed by a few other entries: gadget: high-speed config #2: CDC ACM config gadget: reset acm control interface 0 g_serial gadget: reset acm ttyGS0 g_serial gadget: activate acm ttyGS0 g_serial gadget: acm ttyGS0 serial state 0000 g_serial gadget: non-core control reqa1.21 v0000 i0000 l7 g_serial gadget: acm ttyGS0 reqa1.21 v0000 i0000 l7 g_serial gadget: non-core control req21.22 v0000 i0000 l0 g_serial gadget: acm ttyGS0 req21.22 v0000 i0000 l0 g_serial gadget: non-core control req21.20 v0000 i0000 l7 g_serial gadget: acm ttyGS0 req21.20 v0000 i0000 l7 g_serial gadget: non-core control reqa1.21 v0000 i0000 l7 g_serial gadget: acm ttyGS0 reqa1.21 v0000 i0000 l7 g_serial gadget: reset config g_serial gadget: acm ttyGS0 deactivated Any other leads? Thanks, Bálint -- 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