Re: [PATCH] powerpc: Fix initialization and usage of dma_mask

On Tue, Aug 07, Benjamin Herrenschmidt wrote:

powerpc has a couple of bugs in the usage of dma_masks that tend to
break when drivers explicitely try to set a 32 bits mask for example.

First the code that generates the pci devices from the OF device-tree
doesn't initialize the mask properly, then our implementation of
set_dma_mask() was trying to validate the -previous- mask value, not the
one passed in as an argument.

This patch should fix these.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---

Does this fix the problem you've noticed ?

This patch fixes it. Thanks.