This is a note to let you know that I've just added the patch titled
dmaengine: fix is_slave_direction() return false when DMA_DEV_TO_DEV
to the 6.6-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
dmaengine-fix-is_slave_direction-return-false-when-d.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 2910283967ca90d402a9ba2052378e94058ce1c0
Author: Frank Li <Frank.Li@xxxxxxx>
Date: Tue Jan 23 12:28:41 2024 -0500
dmaengine: fix is_slave_direction() return false when DMA_DEV_TO_DEV
[ 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 <Frank.Li@xxxxxxx>
Link: https://lore.kernel.org/r/20240123172842.3764529-1-Frank.Li@xxxxxxx
Signed-off-by: Vinod Koul <vkoul@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h
index c3656e590213..cff3dba65820 100644
--- a/include/linux/dmaengine.h
+++ b/include/linux/dmaengine.h
@@ -955,7 +955,8 @@ 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(
