dma: of: Remove check on always true condition

Both of_dma_nbcells field of the of_dma_controller and the args_count field of
the dma_spec are initialized by parsing the #dma-cells attribute of their device
tree node. So if the device tree nodes of a DMA controller and the dma_spec
match this means that of_dma_nbcells and args_count will also match. So the
second test in the of_dma_find_controller loop is redundant because given the
first test yields true the second test will also yield true. So we can safely
remove the test whether of_dma_nbcells matches args_count. Since this was the
last user of the of_dma_nbcells field we can remove it altogether.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

1 files changed, 0 insertions, 1 deletions

diff --git a/include/linux/of_dma.h b/include/linux/of_dma.h
index 364dda7..ae36298 100644
--- a/include/linux/of_dma.h
+++ b/include/linux/of_dma.h
@@ -21,7 +21,6 @@ struct device_node;
 struct of_dma {
 	struct list_head	of_dma_controllers;
 	struct device_node	*of_node;
-	int			of_dma_nbcells;
 	struct dma_chan		*(*of_dma_xlate)
 				(struct of_phandle_args *, struct of_dma *);
 	void			*of_dma_data;