From: Arnd Bergmann <[email protected]>
My previous bugfix ended up making things worse for the QCOM IOMMU
driver when it forgot to add the Kconfig symbol that is getting used to
control the compilation of the SMMU implementation specific code
for Qualcomm.
Fixes: 424953cf3c66 ("qcom_scm: hide Kconfig symbol")
Reported-by: Daniel Lezcano <[email protected]>
Reported-by: Dmitry Baryshkov <[email protected]>
Reported-by: John Stultz <[email protected]>
Link:
https://lore.kernel.org/lkml/[email protected]/
Signed-off-by: Arnd Bergmann <[email protected]>
---
In case we want fix it this way after all, here is the patch
I made. Either this one or Dmitry patch from the link above
is required for v5.15
---
drivers/iommu/Kconfig | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/iommu/Kconfig b/drivers/iommu/Kconfig
index c5c71b7ab7e8..3eb68fa1b8cc 100644
--- a/drivers/iommu/Kconfig
+++ b/drivers/iommu/Kconfig
@@ -355,6 +355,14 @@ config ARM_SMMU_DISABLE_BYPASS_BY_DEFAULT
'arm-smmu.disable_bypass' will continue to override this
config.
+config ARM_SMMU_QCOM
+ def_tristate y
+ depends on ARM_SMMU && ARCH_QCOM
+ select QCOM_SCM
+ help
+ When running on a Qualcomm platform that has the custom variant
+ of the ARM SMMU, this needs to be built into the SMMU driver.
+
config ARM_SMMU_V3
tristate "ARM Ltd. System MMU Version 3 (SMMUv3) Support"
depends on ARM64
--
2.29.2
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