From: Andrew Jackson <Andrew.Jackson@arm.com>
Date: Fri, 31 Oct 2014 06:55:10 +0000 (+0000)
Subject: serial: pl011: Set length of DMA transfer
X-Git-Tag: submit/tizen/20141203.153721~9
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=5a69f53a95b136e35cba0fb0bc42a4dc14ad2bb5;p=platform%2Fkernel%2Flinux-arm64.git

serial: pl011: Set length of DMA transfer

The DMA engines on some systems require that the dma_length is set
when using scatter gather lists.

Signed-off-by: Andrew Jackson <Andrew.Jackson@arm.com>
---

diff --git a/drivers/tty/serial/amba-pl011.c b/drivers/tty/serial/amba-pl011.c
index c533bb33435..9c738c83fb8 100644
--- a/drivers/tty/serial/amba-pl011.c
+++ b/drivers/tty/serial/amba-pl011.c
@@ -246,6 +246,7 @@ static int pl011_sgbuf_init(struct dma_chan *chan, struct pl011_sgbuf *sg,
 	sg_set_page(&sg->sg, phys_to_page(dma_addr),
 		PL011_DMA_BUFFER_SIZE, offset_in_page(dma_addr));
 	sg_dma_address(&sg->sg) = dma_addr;
+	sg_dma_len(&sg->sg) = PL011_DMA_BUFFER_SIZE;
 
 	return 0;
 }