On Tue, Feb 24, 2015 at 11:27 AM, Nicolas Chauvet <kwizart(a)gmail.com> wrote:
MSM_IOMMU doesn't play nice in multi-platform kernel
This is causing probe issue as it tries to register unconditionally
Specially experienced on tegra_drm where IOMMU support was enabled
for tegra30 and later since 3.19. It has prevented the fallback
to non-iommu in the tegra20 case.
This need additionals "workaround" patches for EXYNOS, OMAP and Rockchip.
v2 for thoses patches are reported at:
http://lists.linuxfoundation.org/pipermail/iommu/2015-February/012226.html
This config change and thoses additionals patches would need
to be backported down to 3.19 fedora kernels
I've disabled that driver and pushed it, I'll review the rest of the
patches shortly.
Peter