Commit ca8d92f6 authored Jul 17, 2019 by Fugang Duan Committed by Greg Kroah-Hartman Sep 04, 2019

tty: serial: fsl_lpuart: use kzalloc() instead of kmalloc()



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>

parent d8a0e92e

drivers/tty/serial/fsl_lpuart.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -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;

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