Re: [PATCH 1/2] swiotlb: Make DIRECT_MAPPING_ERROR viable
From: Christoph Hellwig
Date: Tue Nov 20 2018 - 11:07:46 EST
The subject line should say dma-direct. This isn't really swiotlb
specific.
> +#define DIRECT_MAPPING_ERROR ~(dma_addr_t)0
Please add braces around the value like the other *MAPPING_ERROR
defintions so that it can be safely used in any context.
Otherwise looks good:
Reviewed-by: Christoph Hellwig <hch@xxxxxx>