From 0299853c014aa0eecf7fb85ac2f1ebd0a9a6ba73 Mon Sep 17 00:00:00 2001 From: Frank Li Date: Mon, 11 Mar 2024 19:16:00 +0800 Subject: [PATCH] dmaengine: fix is_slave_direction() return false when DMA_DEV_TO_DEV stable inclusion from stable-v4.19.307 commit 743259cc178aee41626f5929ed9ea6f63bb0c631 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I970CO CVE: NA -------------------------------- [ Upstream commit a22fe1d6dec7e98535b97249fdc95c2be79120bb ] is_slave_direction() should return true when direction is DMA_DEV_TO_DEV. Fixes: 49920bc66984 ("dmaengine: add new enum dma_transfer_direction") Signed-off-by: Frank Li Link: https://lore.kernel.org/r/20240123172842.3764529-1-Frank.Li@nxp.com Signed-off-by: Vinod Koul Signed-off-by: Sasha Levin Signed-off-by: Yongqiang Liu --- include/linux/dmaengine.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h index 0647f436f88c..0da3fa46a7a7 100644 --- a/include/linux/dmaengine.h +++ b/include/linux/dmaengine.h @@ -825,7 +825,8 @@ static inline int dmaengine_slave_config(struct dma_chan *chan, static inline bool is_slave_direction(enum dma_transfer_direction direction) { - return (direction == DMA_MEM_TO_DEV) || (direction == DMA_DEV_TO_MEM); + return (direction == DMA_MEM_TO_DEV) || (direction == DMA_DEV_TO_MEM) || + (direction == DMA_DEV_TO_DEV); } static inline struct dma_async_tx_descriptor *dmaengine_prep_slave_single( -- Gitee