Hi, On Wed, Oct 17, 2018 at 03:38:07PM +0200, Mathieu Malaterre wrote: > Since CONFIG_PREEMPT has been 'y' since at least commit 0752f92934292 > could you confirm that the original mmc driver (kernel from imgtech > people) did work ok with PREEMPT_NONE (sorry I did not do my homework) > ? Sorry, cannot confirm or test that. I have only used the mainline kernel on this board, since v4.5 or so with my own custom config which has been PREEMPT_NONE until now. A.