347 	u32 best_burst = max_burst;  in stm32_dma_get_best_burst()  local
349 	if (best_burst == 1 || !stm32_dma_is_burst_possible(buf_len, threshold))  in stm32_dma_get_best_burst()
352 	while ((buf_len < best_burst * width && best_burst > 1) ||  in stm32_dma_get_best_burst()
353 	       !stm32_dma_fifo_threshold_is_allowed(best_burst, threshold,  in stm32_dma_get_best_burst()
355 		if (best_burst > STM32_DMA_MIN_BURST)  in stm32_dma_get_best_burst()
356 			best_burst = best_burst >> 1;  in stm32_dma_get_best_burst()
358 			best_burst = 0;  in stm32_dma_get_best_burst()
361 	return best_burst;  in stm32_dma_get_best_burst()
1249 	u32 num_sgs, best_burst, threshold;  in stm32_dma_prep_dma_memcpy()  local
1266 		best_burst = stm32_dma_get_best_burst(len, STM32_DMA_MAX_BURST,  in stm32_dma_prep_dma_memcpy()
1268 		dma_burst = stm32_dma_get_burst(chan, best_burst);  in stm32_dma_prep_dma_memcpy()