Re: [PATCH v5 29/38] drm: rcar-du: fix common struct sg_table related issues

Hi Marek, Thank you for the patch. On Wed, May 13, 2020 at 03:32:36PM +0200, Marek Szyprowski wrote: > The Documentation/DMA-API-HOWTO.txt states that the dma_map_sg() function > returns the number of the created entries in the DMA address space. > However the subsequent calls to the

[PATCH v5 29/38] drm: rcar-du: fix common struct sg_table related issues

The Documentation/DMA-API-HOWTO.txt states that the dma_map_sg() function returns the number of the created entries in the DMA address space. However the subsequent calls to the dma_sync_sg_for_{device,cpu}() and dma_unmap_sg must be called with the original number of the entries passed to the