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fXYKpeXiYhByQ5V0nKcNlryPKoApMU9bVKXa6FtGsyKO6+S2bSvo/JAAJAq1hUhVaMbrTo7E9Kx IznTUtgPvUuyb6byIPa4XVdconDLgNcZy7TXJMWmiasUHz/9e5sW For when a device is not DMA capable, the max mapping size would be 0, so make dma_max_mapping_size() reflect that. Signed-off-by: John Garry --- kernel/dma/mapping.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/kernel/dma/mapping.c b/kernel/dma/mapping.c index 4fe04669e5e66..7e576e5c6b8be 100644 --- a/kernel/dma/mapping.c +++ b/kernel/dma/mapping.c @@ -979,6 +979,9 @@ size_t dma_max_mapping_size(struct device *dev) const struct dma_map_ops *ops = get_dma_ops(dev); size_t size = SIZE_MAX; + if (!dev->dma_mask) + return 0; + if (dma_map_direct(dev, ops)) size = dma_direct_max_mapping_size(dev); else if (use_dma_iommu(dev)) -- 2.43.7