Alexey Kardashevskiy <a...@ozlabs.ru> writes:
> diff --git a/arch/powerpc/platforms/powernv/npu-dma.c
> b/arch/powerpc/platforms/powernv/npu-dma.c
> index dc629ee..3468eaa 100644
> --- a/arch/powerpc/platforms/powernv/npu-dma.c
> +++ b/arch/powerpc/platforms/powernv/npu-dma.c
> @@ -372,8 +358,263 @@ struct npu {
...
> +
> +static void pnv_comp_attach_table_group(struct npu_comp *npucomp,
> + struct pnv_ioda_pe *pe)
> +{
> + if (WARN_ON(npucomp->pe_num == NV_NPU_MAX_PE_NUM))
> + return;
> +
> + npucomp->pe[npucomp->pe_num] = pe;
> + ++npucomp->pe_num;
> +}
> +
> +struct iommu_table_group *pnv_try_setup_npu_table_group(struct pnv_ioda_pe
> *pe)
> +{
> + struct iommu_table_group *table_group;
> + struct npu_comp *npucomp;
> + struct pci_dev *gpdev = NULL;
> + struct pci_controller *hose;
> + struct pci_dev *npdev;
> +
> + list_for_each_entry(gpdev, &pe->pbus->devices, bus_list) {
> + npdev = pnv_pci_get_npu_dev(gpdev, 0);
> + if (npdev)
> + break;
> + }
> +
> + if (!npdev)
> + /* It is not an NPU attached device, skip */
> + return NULL;
This breaks some configs with:
arch/powerpc/platforms/powernv/npu-dma.c:550:5: error: 'npdev' may be used
uninitialized in this function [-Werror=uninitialized]
cheers
