| Message ID | 20221017131413.202567-1-amelie.delaunay@foss.st.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | dmaengine: stm32-mdma: memset stm32_mdma_chan_config struct before using it | expand |
On 17-10-22, 15:14, Amelie Delaunay wrote: > 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. Applied, thanks
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];
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> --- drivers/dma/stm32-mdma.c | 1 + 1 file changed, 1 insertion(+)