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Message-ID: <1445343502-4436-1-git-send-email-yoshihiro.shimoda.uh@renesas.com>
Date:	Tue, 20 Oct 2015 21:18:22 +0900
From:	Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>
To:	<gregkh@...uxfoundation.org>, <jslaby@...e.com>,
	<linux-serial@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC:	<linux-sh@...r.kernel.org>,
	Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>
Subject: [PATCH] serial: sh-sci: Fix length of scatterlist

This patch fixes an issue that the "length" of scatterlist should be
set using sh_dma_length(). Otherwise, a dmaengine driver cannot work
correctly if CONFIG_NEED_SG_DMA_LENGTH=y.

Fixes: 7b39d90184 (serial: sh-sci: Fix NULL pointer dereference if HIGHMEM is enabled)
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>
---
 drivers/tty/serial/sh-sci.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c
index 960e50a..284a872 100644
--- a/drivers/tty/serial/sh-sci.c
+++ b/drivers/tty/serial/sh-sci.c
@@ -1437,7 +1437,7 @@ static void sci_request_dma(struct uart_port *port)
 			sg_init_table(sg, 1);
 			s->rx_buf[i] = buf;
 			sg_dma_address(sg) = dma;
-			sg->length = s->buf_len_rx;
+			sg_dma_length(sg) = s->buf_len_rx;
 
 			buf += s->buf_len_rx;
 			dma += s->buf_len_rx;
-- 
1.9.1

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