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d9973871da
This patch refactors the code that is responsible to set the DMA mask for the device. Upon each change of the dma mask, the driver will save the new value that was set. This is needed in order to make sure we don't try to increase the mask a second time, in case we failed in the first time. This is especially relevant for Power machines, as that may cause a change in configuration of the TVT which will break the device. Goya will first try to set the device's dma mask to 39 bits, so that the memory that is allocated on the host machine for communication with the device's cpu will be in a bus address which is lower then 39 bits. Later, Goya will try to increase that mask to 48 bits, but only if setting the mask to 39 bits was successful. Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Linux kernel
============
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