From: Oliver O'Halloran Date: Sun, 5 Jul 2020 13:35:57 +0000 (+1000) Subject: powerpc/powernv: Move pnv_ioda_setup_bus_dma under CONFIG_IOMMU_API X-Git-Tag: v5.9-rc1~100^2~304 X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=e3417faec526cbf97773dca691dcd743f5bfeb64;p=tomoyo%2Ftomoyo-test1.git powerpc/powernv: Move pnv_ioda_setup_bus_dma under CONFIG_IOMMU_API pnv_ioda_setup_bus_dma() is only used when a passed through PE is returned to the host. If the kernel is built without IOMMU support this is dead code. Move it under the #ifdef with the rest of the IOMMU API support. Reported-by: kernel test robot Signed-off-by: Oliver O'Halloran Reviewed-by: Alexey Kardashevskiy Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20200705133557.443607-2-oohall@gmail.com --- diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c b/arch/powerpc/platforms/powernv/pci-ioda.c index c2d46d28114b..31c3e6d58c41 100644 --- a/arch/powerpc/platforms/powernv/pci-ioda.c +++ b/arch/powerpc/platforms/powernv/pci-ioda.c @@ -1885,19 +1885,6 @@ static bool pnv_pci_ioda_iommu_bypass_supported(struct pci_dev *pdev, return false; } -static void pnv_ioda_setup_bus_dma(struct pnv_ioda_pe *pe, struct pci_bus *bus) -{ - struct pci_dev *dev; - - list_for_each_entry(dev, &bus->devices, bus_list) { - set_iommu_table_base(&dev->dev, pe->table_group.tables[0]); - dev->dev.archdata.dma_offset = pe->tce_bypass_base; - - if ((pe->flags & PNV_IODA_PE_BUS_ALL) && dev->subordinate) - pnv_ioda_setup_bus_dma(pe, dev->subordinate); - } -} - static inline __be64 __iomem *pnv_ioda_get_inval_reg(struct pnv_phb *phb, bool real_mode) { @@ -2547,6 +2534,19 @@ static long pnv_pci_ioda2_create_table_userspace( return ret; } +static void pnv_ioda_setup_bus_dma(struct pnv_ioda_pe *pe, struct pci_bus *bus) +{ + struct pci_dev *dev; + + list_for_each_entry(dev, &bus->devices, bus_list) { + set_iommu_table_base(&dev->dev, pe->table_group.tables[0]); + dev->dev.archdata.dma_offset = pe->tce_bypass_base; + + if ((pe->flags & PNV_IODA_PE_BUS_ALL) && dev->subordinate) + pnv_ioda_setup_bus_dma(pe, dev->subordinate); + } +} + static void pnv_ioda2_take_ownership(struct iommu_table_group *table_group) { struct pnv_ioda_pe *pe = container_of(table_group, struct pnv_ioda_pe,