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bcm270x: Remove 4MB dma coherent pool
Drop the call to init_dma_coherent_pool_size(). The default 256kB is enough since vchiq dropped that atomic allocation some time back. Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
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Hmm. I wonder if the removal of the 4MB cma pool is the cause of the failure to play anything out of a I2S device with the rpi-4.8.y tree?
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Does cma=4M added to cmdline.txt help?
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Don't know. I reverted all the devices I put a 4.8 kernel onto last night. There were multiple issues. This was just one of them. I'll come back to this when the 4.8 tree is more stable. I need stuff to just work at the moment, so I'll stick with rpi-4.7.y for the time being.