Revert "[media] V4L: videobuf, don't use dma addr as physical"
This reverts commit 35d9f510 . Quoth Jiri Slaby: "It fixes mmap when IOMMU is used on x86 only, but breaks architectures like ARM or PPC where virt_to_phys(dma_alloc_coherent) doesn't work. We need there dma_mmap_coherent or similar (the trickery what snd_pcm_default_mmap does but in some saner way). But this cannot be done at this phase." Requested-by: Jiri Slaby <firstname.lastname@example.org> Cc: Russell King - ARM Linux <email@example.com> Cc: Janusz Krzysztofik <firstname.lastname@example.org> Acked-by: Mauro Carvalho Chehab <email@example.com> Signed-off-by: Linus Torvalds <firstname.lastname@example.org>