commit e3f595b9039c888016211c710eb1f58b3f60f809
author Suman Anna <s-anna@ti.com> Thu Sep 04 17:27:29 2014 -0500
committer Joerg Roedel <jroedel@suse.de> Fri Sep 05 15:31:05 2014 +0200
tree aff1744f04e68d4c75b471a135b9972c5e209b19
parent 69e273c0b0a3c337a521d083374c918dc52c666f

iommu/omap: Check for valid archdata in attach_dev

Any device requiring to be attached to an iommu_domain must have
valid archdata containing the necessary iommu information, which
is SoC-specific. Add a check in the omap_iommu_attach_dev to make
sure that the device has valid archdata before accessing
different SoC-specific fields of the archdata. This prevents a
NULL pointer dereference on any misconfigured devices.

Signed-off-by: Suman Anna <s-anna@ti.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>