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| author |   Amelie Delaunay <amelie.delaunay@foss.st.com> | 2022-10-17 15:14:13 +0200 |
|---|---|---|
| committer |   Vinod Koul <vkoul@kernel.org> | 2022-10-19 19:01:19 +0530 |
| commit | 5a637f83d96fc9f27e93385924e7253a5f5187bc (patch) | |
| tree | bd298cf0cc0b34d36efef33c4baa96338e5a8abe | |
| parent | Linux 6.1-rc1 (diff) | |
| download | linux-dev-5a637f83d96fc9f27e93385924e7253a5f5187bc.tar.xz linux-dev-5a637f83d96fc9f27e93385924e7253a5f5187bc.zip | |
dmaengine: stm32-mdma: memset stm32_mdma_chan_config struct before using it
New bool m2m_hw has been added at the end of stm32_mdma_chan_config struct
to support the STM32 DMA MDMA chaining.
m2m_hw is set true in stm32_mdma_slave_config() if peripheral_size is set,
but m2m_hw is never initialized false.
To ensure this case, and any further new update of the structure, memset it
to 0 before using it.
Fixes: 696874322771 ("dmaengine: stm32-mdma: add support to be triggered by STM32 DMA")
Signed-off-by: Amelie Delaunay <amelie.delaunay@foss.st.com>
Link: https://lore.kernel.org/r/20221017131413.202567-1-amelie.delaunay@foss.st.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
| -rw-r--r-- | drivers/dma/stm32-mdma.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/dma/stm32-mdma.c b/drivers/dma/stm32-mdma.c index e28acbcb53f4..b9d4c843635f 100644 --- a/drivers/dma/stm32-mdma.c +++ b/drivers/dma/stm32-mdma.c @@ -1539,6 +1539,7 @@ static struct dma_chan *stm32_mdma_of_xlate(struct of_phandle_args *dma_spec, return NULL; } + memset(&config, 0, sizeof(config)); config.request = dma_spec->args[0]; config.priority_level = dma_spec->args[1]; config.transfer_config = dma_spec->args[2]; |