Hi Marek,
I love your patch! Perhaps something to improve:
[auto build test WARNING on next-20200618]
[also build test WARNING on v5.8-rc1]
[cannot apply to linuxtv-media/master staging/staging-testing
drm-exynos/exynos-drm-next drm-intel/for-linux-next linus/master v5.8-rc1 v5.7
v5.7-rc7]
[If
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 dma_
