On Wed, 17 Oct 2018 at 16:50, Aaro Koskinen <aaro.koskinen@xxxxxx> wrote: > > 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. > Aaro, I spent some time today investigating this issue. I think this driver has a broken pre-request/post-request implementation. Will post some patches soon. Thanks for the report, -- Ezequiel García, VanguardiaSur www.vanguardiasur.com.ar
