From: Fugang Duan <fugang.duan@nxp.com>
Date: Wed, 17 Jul 2019 13:19:28 +0800
Subject: tty: serial: fsl_lpuart: use kzalloc() instead of kmalloc()
Git-commit: ca8d92f6d3ddc24140554c24dcbe0a43759f37d7
Patch-mainline: v5.4-rc1
References: jsc#SLE-12251
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@nxp.com>
Link: https://lore.kernel.org/r/20190717051930.15514-4-fugang.duan@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@suse.com>
---
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 7bc304798f10..746681be3760 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;
--
2.26.2