On Mon, Feb 27, 2017 at 12:58:40PM +0800, Fengguang Wu wrote: > Here is another bisect result. The attached reproduce-* script may > help debug the issue. Thanks for this. FYI the cause of this issue is already understood (refer to previous linux-platform-driver ML discussions). The relevant part of the patch series (08/10) has been (or will be) reverted by Andy to resolve the problem for the moment (as per my earlier email). The issue that part 08/10 was aiming to fix will be addressed in a more complete way in a follow up patch series from Michael in due course as explained in my Reviewed-by comment. Regards jonathan