Commit a7f3d3d3 authored by Heiner Kallweit's avatar Heiner Kallweit Committed by Christoph Hellwig
Browse files

dma-mapping: add unlikely hint to error path in dma_mapping_error 



Zillions of drivers use the unlikely() hint when checking the result of
dma_mapping_error(). This is an inline function anyway, so we can move
the hint into the function and remove it from drivers over time.

Signed-off-by: default avatarHeiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: default avatarRobin Murphy <robin.murphy@arm.com>
Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
parent ca947482

include/linux/dma-mapping.h

+1 −1
Original line number Diff line number Diff line
@@ -95,7 +95,7 @@ static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr) 
{

	debug_dma_mapping_error(dev, dma_addr);



	if (dma_addr == DMA_MAPPING_ERROR)

	if (unlikely(dma_addr == DMA_MAPPING_ERROR))

		return -ENOMEM;

	return 0;

}