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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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Andrew Jackson 2014-11-07 14:14:43 +00:00 committed by Greg Kroah-Hartman
parent e2a545a6ae
commit c64be9231e
1 changed files with 1 additions and 0 deletions
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1
drivers/tty/serial/amba-pl011.c
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@ -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;
}