On Mon, Jun 03, 2019 at 08:47:57PM +0100, Jon Hunter wrote: > Since next-20190529 one of our tests for MMC has started failing, where > the symptom is that the data written to the MMC does not match the > source. Bisecting this is pointing to this commit. Unfortunately, I am > not able to cleanly revert this on top of -next, but wanted to report > this if case you have any ideas. Does this fix your problem? https://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu.git/commit/?h=generic-dma-ops&id=1b961423158caaae49d3900b7c9c37477bbfa9b3