powerpc/dma: remove unnecessary BUG()

Direction is already checked in all calling functions in
include/linux/dma-mapping.h and also in called function __dma_sync()

So really no need to check it once more here.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

diff --git a/arch/powerpc/kernel/dma.c b/arch/powerpc/kernel/dma.c
index da20569de9d430cabba7f8d8713e0fb0982f801a..e1cd6e979348c562892c27e17caca0ce6441f23a 100644 (file)
--- a/arch/powerpc/kernel/dma.c
+++ b/arch/powerpc/kernel/dma.c
@@ -235,8 +235,6 @@ static inline dma_addr_t dma_nommu_map_page(struct device *dev,
                                             enum dma_data_direction dir,
                                             unsigned long attrs)
 {
-       BUG_ON(dir == DMA_NONE);
-
        if (!(attrs & DMA_ATTR_SKIP_CPU_SYNC))
                __dma_sync_page(page, offset, size, dir);