[PATCH (net-next.git) 05/18] stmmac: add length field to dma data

Currently, the code pulls out the length field when unmapping a buffer directly from the descriptor. This will result in an uncached read to a dma_alloc_coherent() region. There is no need to do this, so this patch simply puts the value directly into a data structure which will hit the cache.

[PATCH (net-next.git) 05/18] stmmac: add length field to dma data

Currently, the code pulls out the length field when unmapping a buffer directly from the descriptor. This will result in an uncached read to a dma_alloc_coherent() region. There is no need to do this, so this patch simply puts the value directly into a data structure which will hit the cache.