dma-mapping: update comment after dmabounce removal
Commit e3217540 ("ARM/dma-mapping: remove dmabounce") removes the config DMABOUNCE. A comment to the function __dma_page_cpu_to_dev() refers to this removed config DMABOUNCE. Remove the obsolete explanation, but keep the recommendation not to use __dma_page_cpu_to_dev() and use dma_sync_* functions instead. Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Christoph Hellwig <hch@lst.de>
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c9337ad4
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