The available amount of coherent DMA memory is very limited. On Linux
4.4 this issue was worked around by increasing the pool size.
It turns out that using coherent memory here is completely unnecessary.
This change reworks the driver code to use kzalloc+dma_map_single
instead.
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Do not patch upstream files, overwrite them entirely. The upstream files
are buggy for a number of devices and this significantly simplifies the
patch structure
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: John Crispin <john@phrozen.org>
