STM32_MDMA_MAX_BLOCK_LEN
if (len <= STM32_MDMA_MAX_BLOCK_LEN) {
STM32_MDMA_MAX_BLOCK_LEN);
if (sg_dma_len(sg) > STM32_MDMA_MAX_BLOCK_LEN) {
if (!buf_len || !period_len || period_len > STM32_MDMA_MAX_BLOCK_LEN) {
count = DIV_ROUND_UP(len, STM32_MDMA_MAX_BLOCK_LEN);