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From: YueHaibing <yuehaibing@huawei.com>
Date: Wed, 24 Jul 2019 23:41:29 -0300
Subject: media: staging: tegra-vde: Fix build error
Git-commit: 6b2265975239ab655069d796b822835a593e1cc7
Patch-mainline: 5.4-rc1
References: bnc#1151927 5.3.4

If IOMMU_SUPPORT is not set, and COMPILE_TEST is y,
IOMMU_IOVA may be set to m. So building will fails:

drivers/staging/media/tegra-vde/iommu.o: In function `tegra_vde_iommu_map':
iommu.c:(.text+0x41): undefined reference to `alloc_iova'
iommu.c:(.text+0x56): undefined reference to `__free_iova'

Select IOMMU_IOVA while COMPILE_TEST is set to fix this.

Reported-by: Hulk Robot <hulkci@huawei.com>
Suggested-by: Dmitry Osipenko <digetx@gmail.com>
Fixes: b301f8de1925 ("media: staging: media: tegra-vde: Add IOMMU support")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Acked-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/staging/media/tegra-vde/Kconfig |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/staging/media/tegra-vde/Kconfig
+++ b/drivers/staging/media/tegra-vde/Kconfig
@@ -3,7 +3,7 @@ config TEGRA_VDE
 	tristate "NVIDIA Tegra Video Decoder Engine driver"
 	depends on ARCH_TEGRA || COMPILE_TEST
 	select DMA_SHARED_BUFFER
-	select IOMMU_IOVA if IOMMU_SUPPORT
+	select IOMMU_IOVA if (IOMMU_SUPPORT || COMPILE_TEST)
 	select SRAM
 	help
 	    Say Y here to enable support for the NVIDIA Tegra video decoder