From 9887334b804892f10262fa7f805998d554e04367 Mon Sep 17 00:00:00 2001 From: Christophe Leroy Date: Wed, 28 Feb 2018 19:21:45 +0100 Subject: [PATCH] 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 Signed-off-by: Michael Ellerman --- arch/powerpc/kernel/dma.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/arch/powerpc/kernel/dma.c b/arch/powerpc/kernel/dma.c index da20569..e1cd6e9 100644 --- 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); -- 2.7.4