tree 53c6839bef96ec7eb2c587c60665c06b672c5265
parent 31355403dba5aa7a700c69f91cd6266092932701
author Nishanth Aravamudan <nacc@us.ibm.com> 1304688450 +0000
committer Benjamin Herrenschmidt <benh@kernel.crashing.org> 1305779440 +1000

powerpc: Fix kexec with dynamic dma windows

When we kexec we look for a particular property added by the first
kernel, "linux,direct64-ddr-window-info", per-device where we already
have set up dynamic dma windows. The current code, though, wasn't
initializing the size of this property and thus when we kexec'd, we
would find the property but read uninitialized memory resulting in
garbage ddw values for the kexec'd kernel and panics. Fix this by
setting the size at enable_ddw() time and ensuring that the size of the
found property is valid at dupe_ddw_if_kexec() time.

Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>