[REGRESSION] OCTEON MMC driver failure with v4.19
From: Aaro Koskinen
Date: Fri Oct 26 2018 - 16:54:27 EST
OCTEON (MIPS64) MMC driver probe fails with v4.19, because with
Author: Robin Murphy <robin.murphy@xxxxxxx>
Date: Mon Jul 23 23:16:09 2018 +0100
of/device: Set bus DMA mask as appropriate
we now get a default 32-bit bus DMA mask, and the device itself has
64-bit mask, so it gets rejected.
With the current mainline, the driver is again working (probably
because of b4ebe6063204 ("dma-direct: implement complete bus_dma_mask
handling")). But I think this is just because I happen to have < 4 GB RAM,
and it probably could still fail on bigger systems..?