From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew.Jackson@arm.com (Andrew Jackson) Date: Fri, 07 Nov 2014 14:14:43 +0000 Subject: [PATCH 3/5] serial: pl011: Set length of DMA transfer Message-ID: <545CD3D3.9000608@arm.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org The DMA engines on some systems require that the dma_length is set when using scatter gather lists. Signed-off-by: Andrew Jackson --- drivers/tty/serial/amba-pl011.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) 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; } -- 1.7.1