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[3/5] serial: pl011: Set length of DMA transfer

Message ID 545CD3D3.9000608@arm.com (mailing list archive)
State New, archived
Headers show

Commit Message

Andrew Jackson Nov. 7, 2014, 2:14 p.m. UTC
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>
---
 drivers/tty/serial/amba-pl011.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
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Patch

diff --git a/drivers/tty/serial/amba-pl011.c b/drivers/tty/serial/amba-pl011.c
index d8d067a..7c5e263 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;
 }