diff options
| author | Alexey Kardashevskiy <aik@ozlabs.ru> | 2022-07-14 11:08:00 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-08-25 12:40:43 +0300 |
| commit | a5ec4cd45b522a4bbceedbea176d77ee49d73e1a (patch) | |
| tree | 588a61e244029021245d624a43f7211f07b2fbff | |
| parent | 8641e0bbb5ef8feedec7a5d6377acdc6c46e8116 (diff) | |
| download | linux-a5ec4cd45b522a4bbceedbea176d77ee49d73e1a.tar.xz | |
powerpc/ioda/iommu/debugfs: Generate unique debugfs entries
[ Upstream commit d73b46c3c1449bf27f793b9d9ee86ed70c7a7163 ]
The iommu_table::it_index is a LIOBN which is not initialized on PowerNV
as it is not used except IOMMU debugfs where it is used for a node name.
This initializes it_index witn a unique number to avoid warnings and
have a node for every iommu_table.
This should not cause any behavioral change without CONFIG_IOMMU_DEBUGFS.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220714080800.3712998-1-aik@ozlabs.ru
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | arch/powerpc/platforms/powernv/pci-ioda.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c b/arch/powerpc/platforms/powernv/pci-ioda.c index 3dd35c327d1c..624822a81019 100644 --- a/arch/powerpc/platforms/powernv/pci-ioda.c +++ b/arch/powerpc/platforms/powernv/pci-ioda.c @@ -1618,6 +1618,7 @@ found: tbl->it_ops = &pnv_ioda1_iommu_ops; pe->table_group.tce32_start = tbl->it_offset << tbl->it_page_shift; pe->table_group.tce32_size = tbl->it_size << tbl->it_page_shift; + tbl->it_index = (phb->hose->global_number << 16) | pe->pe_number; if (!iommu_init_table(tbl, phb->hose->node, 0, 0)) panic("Failed to initialize iommu table"); @@ -1788,6 +1789,7 @@ static long pnv_pci_ioda2_setup_default_config(struct pnv_ioda_pe *pe) res_end = min(window_size, SZ_4G) >> tbl->it_page_shift; } + tbl->it_index = (pe->phb->hose->global_number << 16) | pe->pe_number; if (iommu_init_table(tbl, pe->phb->hose->node, res_start, res_end)) rc = pnv_pci_ioda2_set_window(&pe->table_group, 0, tbl); else |