On Mon, 2016-11-04 at 19:17:23 UTC, "Guilherme G. Piccoli" wrote:
> Commit 39baadbf36ce ("powerpc/eeh: Remove eeh information from pci_dn")
> changed the pci_dn struct by removing its EEH-related members.
> As part of this clean-up, DDW mechanism was modified to read the device
> configuration address from eeh_dev struct.
>
> As a consequence, now if we disable EEH mechanism on kernel command-line
> for example, the DDW mechanism will fail, generating a kernel oops by
> dereferencing a NULL pointer (which turns to be the eeh_dev pointer).
>
> This patch just changes the configuration address calculation on DDW
> functions to a manual calculation based on pci_dn members instead of
> using eeh_dev-based address.
>
> No functional changes were made. This was tested on pSeries, both
> in PHyp and qemu guest.
>
> Fixes: 39baadbf36ce ("powerpc/eeh: Remove eeh information from pci_dn")
>
> Cc: sta...@vger.kernel.org
> Reviewed-by: Gavin Shan <gws...@linux.vnet.ibm.com>
> Signed-off-by: Guilherme G. Piccoli <gpicc...@linux.vnet.ibm.com>
Applied to powerpc next, thanks.
https://git.kernel.org/powerpc/c/8445a87f7092bc8336ea1305be
cheers
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