Commit 47322c46 authored by Jiri Pirko's avatar Jiri Pirko Committed by Marek Szyprowski
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dma-mapping: avoid random addr value print out on error path 



dma_addr is unitialized in dma_direct_map_phys() when swiotlb is forced
and DMA_ATTR_MMIO is set which leads to random value print out in
warning. Fix that by just returning DMA_MAPPING_ERROR.

Fixes: e53d29f9 ("dma-mapping: convert dma_direct_*map_page to be phys_addr_t based")
Signed-off-by: default avatarJiri Pirko <jiri@nvidia.com>
Signed-off-by: default avatarMarek Szyprowski <m.szyprowski@samsung.com>
Link: https://lore.kernel.org/r/20260209153809.250835-2-jiri@resnulli.us
parent 6de23f81

kernel/dma/direct.h

+1 −1
Original line number Diff line number Diff line
@@ -85,7 +85,7 @@ static inline dma_addr_t dma_direct_map_phys(struct device *dev, 


	if (is_swiotlb_force_bounce(dev)) {

		if (attrs & DMA_ATTR_MMIO)

			goto err_overflow;

			return DMA_MAPPING_ERROR;



		return swiotlb_map(dev, phys, size, dir, attrs);

	}