From: Randy Dunlap rdunlap@infradead.org

[ Upstream commit bf296b35489b46780b73b74ad984d06750ed5479 ]

Kernel test robot reported build errors (undefined references) that didn't make much sense. After reproducing them, there is also a Kconfig warning that is the root cause of the build errors, so fix that Kconfig problem.

Fixes this Kconfig warning: WARNING: unmet direct dependencies detected for CMA Depends on [n]: MMU [=n] Selected by [m]: - DRM_ASPEED_GFX [=m] && HAS_IOMEM [=y] && DRM [=m] && OF [=y] && (COMPILE_TEST [=y] || ARCH_ASPEED) && HAVE_DMA_CONTIGUOUS [=y]

and these dependent build errors: (.text+0x10c8c): undefined reference to `start_isolate_page_range' microblaze-linux-ld: (.text+0x10f14): undefined reference to `test_pages_isolated' microblaze-linux-ld: (.text+0x10fd0): undefined reference to `undo_isolate_page_range'

Fixes: 76356a966e33 ("drm: aspeed: Clean up Kconfig options") Reported-by: kernel test robot lkp@intel.com Signed-off-by: Randy Dunlap rdunlap@infradead.org Reviewed-by: Joel Stanley joel@jms.id.au Cc: Joel Stanley joel@jms.id.au Cc: Andrew Jeffery andrew@aj.id.au Cc: Daniel Vetter daniel.vetter@ffwll.ch Cc: Michal Simek monstr@monstr.eu Cc: Andrew Morton akpm@linux-foundation.org Cc: Mike Rapoport rppt@linux.ibm.com Cc: linux-mm@kvack.org Cc: linux-aspeed@lists.ozlabs.org Cc: linux-arm-kernel@lists.infradead.org Cc: David Airlie airlied@linux.ie Cc: dri-devel@lists.freedesktop.org Signed-off-by: Joel Stanley joel@jms.id.au Link: https://patchwork.freedesktop.org/patch/msgid/20201011230131.4922-1-rdunlap@... Signed-off-by: Joel Stanley joel@jms.id.au Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpu/drm/aspeed/Kconfig | 1 + 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/aspeed/Kconfig b/drivers/gpu/drm/aspeed/Kconfig index 018383cfcfa79..5e95bcea43e92 100644 --- a/drivers/gpu/drm/aspeed/Kconfig +++ b/drivers/gpu/drm/aspeed/Kconfig @@ -3,6 +3,7 @@ config DRM_ASPEED_GFX tristate "ASPEED BMC Display Controller" depends on DRM && OF depends on (COMPILE_TEST || ARCH_ASPEED) + depends on MMU select DRM_KMS_HELPER select DRM_KMS_CMA_HELPER select DMA_CMA if HAVE_DMA_CONTIGUOUS