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 c533bb334355838761e4519bc1b1ac8b5b6f6a8d..9c738c83fb8a6b767bf6cc5e7daa691c4ce8e6fd 100644 (file)
--- 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;
 }