Re: powerpc: Fix crash introduced with commit 5657933dbb6e

On Fri, 2017-03-10 at 02:33:51 UTC, Larry Finger wrote:

Code inserted during the code merged between kernels 4.10 and 4.11-rc1
caused an early panic quickly followed by a complete shutdown for
PowerPC. The traceback was not displayed long enough to read or
photograph, thus it is not reproduced here.

The problem was bisected to commit 5657933dbb6e ("treewide: Move dma_ops
from struct dev_archdata into struct device"). The problem was a missing
copy of critical information from struct dev_archdata into struct device,
leading to the dereference of a null pointer.

This fix was suggested by Benjamin Herrenschmidt.

Fixes: commit 5657933dbb6e ("treewide: Move dma_ops from struct dev_archdata into struct device")
Signed-off-by: Larry Finger <redacted>
Cc: linuxppc-dev@lists.ozlabs.org
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: regressions@leemhuis.info <redacted>

Applied to powerpc fixes, thanks.

https://git.kernel.org/powerpc/c/46f401c4297a2232a037ad8801b6c8

cheers