[PATCH v2 0/4] iommu: A couple of urgent fixes
Thierry Reding
thierry.reding at gmail.com
Fri Feb 6 10:44:04 UTC 2015
From: Thierry Reding <treding at nvidia.com>
Hi Joerg,
Here are a couple of urgent fixes for a regression on old Tegra devices
related to IOMMU support. The issue is that many drivers think it's a
good idea to register IOMMU support unconditionally, which is not the
smart thing to do at all on multi-platform kernels. This probably went
unnoticed for a while because the offending drivers aren't enabled in
any of the multi-platform default configurations. Fedora ARM has their
own config where the offending drivers did get enabled, hence caused a
regression on Tegra20. I would expect the same regression to exist on a
number of other SoCs, possibly all that support IOMMU.
I've tried to keep the patches minimal in the hopes of still getting
this into v3.19-rc8 or the final release to avoid the regression.
Changes in v2:
- avoid potential leak by dropping references to device tree nodes
- remove fixups from module exit functions since they are unused
Thierry
Thierry Reding (4):
iommu/exynos: Play nice in multi-platform builds
iommu/omap: Play nice in multi-platform builds
iommu/rockchip: Play nice in multi-platform builds
iommu/msm: Mark driver BROKEN
drivers/iommu/Kconfig | 1 +
drivers/iommu/exynos-iommu.c | 7 +++++++
drivers/iommu/omap-iommu.c | 7 +++++++
drivers/iommu/rockchip-iommu.c | 7 +++++++
4 files changed, 22 insertions(+)
--
2.1.3
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