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Date: Sun, 14 Aug 2022 12:19:28 -0400 From: Sasha Levin <sashal@...nel.org> To: linux-kernel@...r.kernel.org, stable@...r.kernel.org Cc: Alexey Kardashevskiy <aik@...abs.ru>, Michael Ellerman <mpe@...erman.id.au>, Sasha Levin <sashal@...nel.org>, akpm@...ux-foundation.org, rppt@...nel.org, tglx@...utronix.de, nick.child@....com, christophe.leroy@...roup.eu, linuxppc-dev@...ts.ozlabs.org Subject: [PATCH AUTOSEL 5.19 35/48] powerpc/ioda/iommu/debugfs: Generate unique debugfs entries From: Alexey Kardashevskiy <aik@...abs.ru> [ 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@...abs.ru> Signed-off-by: Michael Ellerman <mpe@...erman.id.au> Link: https://lore.kernel.org/r/20220714080800.3712998-1-aik@ozlabs.ru Signed-off-by: Sasha Levin <sashal@...nel.org> --- arch/powerpc/platforms/powernv/pci-ioda.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c b/arch/powerpc/platforms/powernv/pci-ioda.c index c8cf2728031a..9de9b2fb163d 100644 --- a/arch/powerpc/platforms/powernv/pci-ioda.c +++ b/arch/powerpc/platforms/powernv/pci-ioda.c @@ -1609,6 +1609,7 @@ static void pnv_pci_ioda1_setup_dma_pe(struct pnv_phb *phb, 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"); @@ -1779,6 +1780,7 @@ 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 -- 2.35.1
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