Commit 9887334b authored Feb 28, 2018 by Christophe Leroy Committed by Michael Ellerman Jun 04, 2018

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>

parent 5a61640e

arch/powerpc/kernel/dma.c

+0 −2

Original line number	Diff line number	Diff line
		@@ -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);