kirkwood_egiga: bugfix: add DMA sequence points Insert isb() sequence points to ensure DMA descriptors are filled in and set up before actual DMA occurs. Signed-off-by: Albert Aribaud <albert.aribaud@free.fr> Acked-by: Prafulla Wadaskar <prafulla@marvell.com> Signed-off-by: Ben Warren <biggerbadderben@gmail.com>