kismet: WARNING: unmet direct dependencies detected for DRM_TTM when selected by DRM_HISI_HIBMC

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   42226c989789d8da4af1de0c31070c96726d990c
commit: a0f25a6bb319aa05e04dcf51707c97c2881b4f47 drm/hisilicon/hibmc: Allow to be built if COMPILE_TEST is enabled
date:   4 months ago
config: (attached as .config)
reproduce:
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a0f25a6bb319aa05e04dcf51707c97c2881b4f47
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout a0f25a6bb319aa05e04dcf51707c97c2881b4f47
        # 1. reproduce by kismet
           # install kmax per https://github.com/paulgazz/kmax/blob/master/README.md
           kismet --linux-ksrc=linux --selectees CONFIG_DRM_TTM --selectors CONFIG_DRM_HISI_HIBMC -a=riscv
        # 2. reproduce by make
           # save the config file to linux source tree
           cd linux
           make ARCH=riscv olddefconfig

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <yujie.liu@xxxxxxxxx>


kismet warnings: (new ones prefixed by >>)
>> kismet: WARNING: unmet direct dependencies detected for DRM_TTM when selected by DRM_HISI_HIBMC

   WARNING: unmet direct dependencies detected for DRM_TTM
     Depends on [n]: HAS_IOMEM [=y] && DRM [=y] && MMU [=n]
     Selected by [y]:
     - DRM_TTM_HELPER [=y] && HAS_IOMEM [=y] && DRM [=y]
     - DRM_HISI_HIBMC [=y] && HAS_IOMEM [=y] && DRM [=y] && PCI [=y] && (ARM64 || COMPILE_TEST [=y])

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Attachment: .config.gz
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