[PATCH] Disable BROKEN MSM_IOMMU
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
---
config-armv7 | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/config-armv7 b/config-armv7
index 7f76e38..4e62e3a 100644
--- a/config-armv7
+++ b/config-armv7
@@ -356,7 +356,7 @@ CONFIG_PHY_QCOM_APQ8064_SATA=m
CONFIG_PHY_QCOM_IPQ806X_SATA=m
CONFIG_USB_DWC3_QCOM=m
CONFIG_CRYPTO_DEV_QCE=m
-CONFIG_MSM_IOMMU=y
+# CONFIG_MSM_IOMMU is not set
CONFIG_DRM_MSM=m
CONFIG_DRM_MSM_FBDEV=y
CONFIG_USB_EHCI_MSM=m
--
1.7.2.1