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tty: serial: fsl_lpuart: remove sg_set_buf() for sport->rx_sgl

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Since .sg_init_one() already set sg entry page like below code.
	sg_init_one()
		sg_init_table(sg, 1);
		sg_set_buf(sg, buf, buflen);

So it should not set sg entry page again, remove the redundant code.

Signed-off-by: Fugang Duan <fugang.duan@nxp.com>
Link: https://lore.kernel.org/r/20190717051930.15514-5-fugang.duan@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Fugang Duan 2019-07-17 13:19:29 +08:00 committed by Greg Kroah-Hartman
parent ca8d92f6d3
commit 638341d5db
1 changed files with 0 additions and 1 deletions
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drivers/tty/serial/fsl_lpuart.c
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@ -1102,7 +1102,6 @@ static inline int lpuart_start_rx_dma(struct lpuart_port *sport)
return -ENOMEM; return -ENOMEM;
sg_init_one(&sport->rx_sgl, ring->buf, sport->rx_dma_rng_buf_len); sg_init_one(&sport->rx_sgl, ring->buf, sport->rx_dma_rng_buf_len);
sg_set_buf(&sport->rx_sgl, ring->buf, sport->rx_dma_rng_buf_len);
nent = dma_map_sg(sport->port.dev, &sport->rx_sgl, 1, DMA_FROM_DEVICE); nent = dma_map_sg(sport->port.dev, &sport->rx_sgl, 1, DMA_FROM_DEVICE);
if (!nent) { if (!nent) {