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| author |   Alistair Popple <alistair@popple.id.au> | 2017-06-14 14:47:50 +1000 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2017-06-14 15:23:19 +1000 |
| commit | 377aa6b0efbaa29cfeecd8b9244641217f9544ca (patch) | |
| tree | 298ad8b55f45348c5b17cbdb6f02381e6e4fc157 /arch | |
| parent | powerpc/book3s64: Move PPC_DT_CPU_FTRs and enable it by default (diff) | |
| download | wireguard-linux-377aa6b0efbaa29cfeecd8b9244641217f9544ca.tar.xz wireguard-linux-377aa6b0efbaa29cfeecd8b9244641217f9544ca.zip | |
powerpc/npu-dma: Remove spurious WARN_ON when a PCI device has no of_node
Commit 4c3b89effc28 ("powerpc/powernv: Add sanity checks to
pnv_pci_get_{gpu|npu}_dev") introduced explicit warnings in
pnv_pci_get_npu_dev() when a PCIe device has no associated device-tree
node. However not all PCIe devices have an of_node and
pnv_pci_get_npu_dev() gets indirectly called at least once for every
PCIe device in the system. This results in spurious WARN_ON()'s so
remove it.
The same situation should not exist for pnv_pci_get_gpu_dev() as any
NPU based PCIe device requires a device-tree node.
Fixes: 4c3b89effc28 ("powerpc/powernv: Add sanity checks to pnv_pci_get_{gpu|npu}_dev")
Reported-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Alistair Popple <alistair@popple.id.au>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/platforms/powernv/npu-dma.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/powerpc/platforms/powernv/npu-dma.c b/arch/powerpc/platforms/powernv/npu-dma.c index 78fa9395b8c5..e6f444b46207 100644 --- a/arch/powerpc/platforms/powernv/npu-dma.c +++ b/arch/powerpc/platforms/powernv/npu-dma.c @@ -75,7 +75,8 @@ struct pci_dev *pnv_pci_get_npu_dev(struct pci_dev *gpdev, int index) if (WARN_ON(!gpdev)) return NULL; - if (WARN_ON(!gpdev->dev.of_node)) + /* Not all PCI devices have device-tree nodes */ + if (!gpdev->dev.of_node) return NULL; /* Get assoicated PCI device */ |