gpu: host1x: Unconditionally select IOMMU_IOVA

Currently configurations can be generated where IOMMU_SUPPORT is
disabled but IOMMU_IOVA is built as a module and HOST1X as built-in. In
such a case, the symbols guarded by IOMMU_IOVA will not be available
when linking the host1x driver and cause a linking failure.

Simplify this by unconditionally selecting IOMMU_IOVA, which makes sure
that it will be forced to =y if HOST1X=y. Technically we can now get
IOMMU_IOVA code built-in even if we don't use it (host1x only uses it
when IOMMU_SUPPORT is also enabled), but such configuration are of a
mostly academic nature. In all practical configurations we want IOMMU
support anyway.

Signed-off-by: Thierry Reding <treding@nvidia.com>

diff --git a/drivers/gpu/host1x/Kconfig b/drivers/gpu/host1x/Kconfig
index cf987a3..6dab94a 100644 (file)
--- a/drivers/gpu/host1x/Kconfig
+++ b/drivers/gpu/host1x/Kconfig
@@ -2,7 +2,7 @@
 config TEGRA_HOST1X
        tristate "NVIDIA Tegra host1x driver"
        depends on ARCH_TEGRA || (ARM && COMPILE_TEST)
-       select IOMMU_IOVA if IOMMU_SUPPORT
+       select IOMMU_IOVA
        help
          Driver for the NVIDIA Tegra host1x hardware.