From: Fugang Duan <fugang.duan@xxxxxxx> Use kzalloc() instead of kmalloc() to get clean rx buffer that is useful for DMA mode debug to check the data moving validity. Signed-off-by: Fugang Duan <fugang.duan@xxxxxxx> --- drivers/tty/serial/fsl_lpuart.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/tty/serial/fsl_lpuart.c b/drivers/tty/serial/fsl_lpuart.c index 7bc3047..746681b 100644 --- a/drivers/tty/serial/fsl_lpuart.c +++ b/drivers/tty/serial/fsl_lpuart.c @@ -1097,7 +1097,7 @@ static inline int lpuart_start_rx_dma(struct lpuart_port *sport) if (sport->rx_dma_rng_buf_len < 16) sport->rx_dma_rng_buf_len = 16; - ring->buf = kmalloc(sport->rx_dma_rng_buf_len, GFP_ATOMIC); + ring->buf = kzalloc(sport->rx_dma_rng_buf_len, GFP_ATOMIC); if (!ring->buf) return -ENOMEM; -- 2.7.4
