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Message-ID: <1445496086-5972-1-git-send-email-yoshihiro.shimoda.uh@renesas.com>
Date: Thu, 22 Oct 2015 15:41:26 +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 sg_dma_len(). 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>
---
Changes from v1:
- Fix using implicit declaration of function "sg_dma_length".
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..51c7507 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_len(sg) = s->buf_len_rx;
buf += s->buf_len_rx;
dma += s->buf_len_rx;
--
1.9.1
--
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