vfio/nvlink: Add missing SPAPR_TCE_IOMMU depends

commit e0146a108ce4d2c22b9510fd12268e3ee72a0161 upstream.

Compiling the nvlink stuff relies on the SPAPR_TCE_IOMMU otherwise there
are compile errors:

 drivers/vfio/pci/vfio_pci_nvlink2.c:101:10: error: implicit declaration of function 'mm_iommu_put' [-Werror,-Wimplicit-function-declaration]
                            ret = mm_iommu_put(data->mm, data->mem);

As PPC only defines these functions when the config is set.

Previously this wasn't a problem by chance as SPAPR_TCE_IOMMU was the only
IOMMU that could have satisfied IOMMU_API on POWERNV.

Fixes: 179209fa1270 ("vfio: IOMMU_API should be selected")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Message-Id: <0-v1-83dba9768fc3+419-vfio_nvlink2_kconfig_jgg@nvidia.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/vfio/pci/Kconfig b/drivers/vfio/pci/Kconfig
index 40a223381ab61d6a787b6153a699ae45d15d2bb3..0f28bf99efebc608466b7efec587a341dea1a15e 100644 (file)
--- a/drivers/vfio/pci/Kconfig
+++ b/drivers/vfio/pci/Kconfig
@@ -42,7 +42,7 @@ config VFIO_PCI_IGD
 
 config VFIO_PCI_NVLINK2
        def_bool y
-       depends on VFIO_PCI && PPC_POWERNV
+       depends on VFIO_PCI && PPC_POWERNV && SPAPR_TCE_IOMMU
        help
          VFIO PCI support for P9 Witherspoon machine with NVIDIA V100 GPUs