In commit 424953cf3c665 ("qcom_scm: hide Kconfig symbol"), some logic was added to make the code depend on CONFIG_ARM_SMMU_QCOM, however no such option exist. This caused regressions on db845c (and I suspect other qcom platforms), but can be easily fixed up by adding a new option to re-enable the newly conditionalized code. I set it to default to ARCH_QCOM, so folks don't have to discover this new option to keep things booting, but if folks would rather, I'm ok to drop that line. Cc: Arnd Bergmann <arnd@xxxxxxxx> Cc: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx> Cc: Amit Pundir <amit.pundir@xxxxxxxxxx> Cc: Caleb Connolly <caleb.connolly@xxxxxxxxxx> Cc: Kalle Valo <kvalo@xxxxxxxxxxxxxx> Cc: linux-arm-kernel <linux-arm-kernel@xxxxxxxxxxxxxxxxxxx> Cc: linux-arm-msm <linux-arm-msm@xxxxxxxxxxxxxxx> Fixes: 424953cf3c665 ("qcom_scm: hide Kconfig symbol") Signed-off-by: John Stultz <john.stultz@xxxxxxxxxx> --- drivers/iommu/Kconfig | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/iommu/Kconfig b/drivers/iommu/Kconfig index c5c71b7ab7e83..e674796b1174d 100644 --- a/drivers/iommu/Kconfig +++ b/drivers/iommu/Kconfig @@ -380,6 +380,16 @@ config ARM_SMMU_V3_SVA Say Y here if your system supports SVA extensions such as PCIe PASID and PRI. +config ARM_SMMU_QCOM + bool "QCOM Specific ARM SMMU implementation support" + depends on ARM_SMMU + default ARCH_QCOM + help + Support for the QCOM implementation of the ARM System MMU architecture. + + Say Y here if your SoC includes an QCOM IOMMU device implementing + the ARM SMMU architecture. + config S390_IOMMU def_bool y if S390 && PCI depends on S390 && PCI -- 2.25.1