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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-30 03:35:38 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-30 03:35:38 +0000 |
| commit | 4f8f1553146401921349e8e78962dff48cde846a (patch) | |
| tree | bf5ef5abdf1ca1370eb3947d70a2c176b6b69edd /arch/powerpc/platforms/pseries/iommu.c | |
| parent | Adding upstream version 6.8.9. (diff) | |
| download | linux-upstream/6.8.11.tar.xz linux-upstream/6.8.11.zip | |
Adding upstream version 6.8.11.upstream/6.8.11
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/powerpc/platforms/pseries/iommu.c')
| -rw-r--r-- | arch/powerpc/platforms/pseries/iommu.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/pseries/iommu.c b/arch/powerpc/platforms/pseries/iommu.c index e8c4129697..b1e6d275cd 100644 --- a/arch/powerpc/platforms/pseries/iommu.c +++ b/arch/powerpc/platforms/pseries/iommu.c @@ -786,8 +786,16 @@ static void pci_dma_bus_setup_pSeriesLP(struct pci_bus *bus) * parent bus. During reboot, there will be ibm,dma-window property to * define DMA window. For kdump, there will at least be default window or DDW * or both. + * There is an exception to the above. In case the PE goes into frozen + * state, firmware may not provide ibm,dma-window property at the time + * of LPAR boot up. */ + if (!pdn) { + pr_debug(" no ibm,dma-window property !\n"); + return; + } + ppci = PCI_DN(pdn); pr_debug(" parent is %pOF, iommu_table: 0x%p\n", |