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serial: pl011: Set length of DMA transfer

PATCH New Andrew Jackson 1 participant 1 message Nov 7, 2014

Subsystems (2)
TTY layer and serial drivers Arm primecell UART PL010 and PL011 drivers
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Andrew Jackson

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PATCH 3/5 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 <[email protected]>
---
 drivers/tty/serial/amba-pl011.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
drivers/tty/serial/amba-pl011.c +1 -0
index d8d067a..7c5e263 100644
@@ -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;
 }
Signature · 1 line
1.7.1