drivers: dma: siwx917: Add error handling for cyclic DMA

Return an error code when cyclic DMA is configured, as this feature is not supported by the siwx917 hardware Signed-off-by: Sai Santhosh Malae <[email protected]>
SiliconLabsSoftware · Jan 20, 2025 · 4932011 · 4932011
1 parent f496ddb
commit 4932011
Showing 1 changed file with 6 additions and 2 deletions.
diff --git a/drivers/dma/dma_silabs_siwx917.c b/drivers/dma/dma_silabs_siwx917.c
@@ -342,9 +342,13 @@ static int siwx917_dma_configure(const struct device *dev, uint32_t channel,
 		return -EINVAL;
 	}
 
+	if (config->cyclic) {
+		/* Cyclic DMA feature is not supported by siwx917 HW */
+		return -EINVAL;
+	}
+
 	/* Configure dma channel for transfer */
-	if (config->head_block->source_gather_en || config->head_block->dest_scatter_en ||
-	    config->cyclic) {
+	if (config->head_block->source_gather_en || config->head_block->dest_scatter_en) {
 		/* Configure DMA for a Scatter-Gather transfer */
 		status = siwx917_sg_config(dev, udma_handle, channel, config);
 	} else {