2016-03-03 19:57 GMT+09:00 Arnd Bergmann [off-list ref]:

On Thursday 03 March 2016 17:03:35 Krzysztof Kozlowski wrote:

quoted

diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig
index 201f5c296a95..e5931e434fa2 100644
--- a/drivers/media/platform/Kconfig
+++ b/drivers/media/platform/Kconfig

@@ -79,6 +79,7 @@ config VIDEO_OMAP3
        depends on VIDEO_V4L2 && I2C && VIDEO_V4L2_SUBDEV_API && ARCH_OMAP3
        depends on HAS_DMA && OF
        depends on OMAP_IOMMU
+       depends on HAS_IOMEM    # For MFD_SYSCON
        select ARM_DMA_USE_IOMMU
        select VIDEOBUF2_DMA_CONTIG

This is only built for OMAP3, so we won't get here without HAS_IOMEM

Indeed.

quoted

        select MFD_SYSCON

diff --git a/drivers/media/platform/exynos4-is/Kconfig b/drivers/media/platform/exynos4-is/Kconfig
index 57d42c6172c5..c4317b99d257 100644
--- a/drivers/media/platform/exynos4-is/Kconfig
+++ b/drivers/media/platform/exynos4-is/Kconfig

@@ -17,6 +17,7 @@ config VIDEO_S5P_FIMC
        tristate "S5P/EXYNOS4 FIMC/CAMIF camera interface driver"
        depends on I2C
        depends on HAS_DMA
+       depends on HAS_IOMEM    # For MFD_SYSCON
        select VIDEOBUF2_DMA_CONTIG
        select V4L2_MEM2MEM_DEV

This  is guarded by HAS_DMA, which implies HAS_IOMEM afaik.

Looking at Kconfigs - no, it is not implied (or am I missing
something)... and sometimes dependency on HAS_IOMEM is next to
HAS_DMA.

BR,
Krzysztof