linux-kernel - [PATCH] media: staging: tegra-vde: Fix build error

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Date:   Thu, 25 Jul 2019 10:41:29 +0800
From:   YueHaibing <yuehaibing@...wei.com>
To:     <digetx@...il.com>, <mchehab@...nel.org>,
        <gregkh@...uxfoundation.org>, <thierry.reding@...il.com>,
        <jonathanh@...dia.com>, <robin.murphy@....com>,
        <sakari.ailus@...ux.intel.com>
CC:     <linux-kernel@...r.kernel.org>, <devel@...verdev.osuosl.org>,
        <linux-media@...r.kernel.org>, <linux-tegra@...r.kernel.org>,
        <iommu@...ts.linux-foundation.org>,
        YueHaibing <yuehaibing@...wei.com>
Subject: [PATCH] media: staging: tegra-vde: Fix build error

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@...wei.com>
Suggested-by: Dmitry Osipenko <digetx@...il.com>
Fixes: b301f8de1925 ("media: staging: media: tegra-vde: Add IOMMU support")
Signed-off-by: YueHaibing <yuehaibing@...wei.com>
---
 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 2e7f644..ba49ea5 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
-- 
2.7.4