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drivers: dma_stm32: init DMA struct in dma_stm32_configure

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The init struct for DMA peripheral is allocated in stack
and must be initialized (e.g. with LL_DMA_StructInit here)
to avoid loading undefined values in the DMA peripheral
registers.

Signed-off-by: Abel Radenac <a.radenac@lacroix-sofrel.com>
This commit is contained in:
Abel Radenac 2021-03-29 18:14:29 +02:00 committed by Maureen Helm
parent 9a07e5ac0d
commit e8fa6b3f08
1 changed files with 3 additions and 1 deletions
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4
drivers/dma/dma_stm32.c
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@ -265,9 +265,11 @@ DMA_STM32_EXPORT_API int dma_stm32_configure(const struct device *dev,
struct dma_stm32_stream *stream = struct dma_stm32_stream *stream =
&dev_config->streams[id - STREAM_OFFSET]; &dev_config->streams[id - STREAM_OFFSET];
DMA_TypeDef *dma = (DMA_TypeDef *)dev_config->base; DMA_TypeDef *dma = (DMA_TypeDef *)dev_config->base;
LL_DMA_InitTypeDef DMA_InitStruct = {0}; LL_DMA_InitTypeDef DMA_InitStruct;
int ret; int ret;
LL_DMA_StructInit(&DMA_InitStruct);
/* give channel from index 0 */ /* give channel from index 0 */
id = id - STREAM_OFFSET; id = id - STREAM_OFFSET;