From: YueHaibing <yuehaibing@xxxxxxxxxx> [ Upstream commit 6b2265975239ab655069d796b822835a593e1cc7 ] 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@xxxxxxxxxx> Suggested-by: Dmitry Osipenko <digetx@xxxxxxxxx> Fixes: b301f8de1925 ("media: staging: media: tegra-vde: Add IOMMU support") Signed-off-by: YueHaibing <yuehaibing@xxxxxxxxxx> Acked-by: Dmitry Osipenko <digetx@xxxxxxxxx> Signed-off-by: Hans Verkuil <hverkuil-cisco@xxxxxxxxx> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@xxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- drivers/staging/media/tegra-vde/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/staging/media/tegra-vde/Kconfig b/drivers/staging/media/tegra-vde/Kconfig index 2e7f644ae5911..ba49ea50b8c0b 100644 --- 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 -- 2.20.1 _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel