serial: sh-sci: Use sg_dma_len() and sg_dma_address()
Convert the dmaengine code in sh-sci.c from
directly accessing the struct scatterlist members
length, dma_length and dma_address to using the
macros sg_dma_len() and sg_dma_address().
Makes the code build for ARM.
Signed-off-by: Magnus Damm <damm@opensource.se>
Acked-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/drivers/serial/sh-sci.c b/drivers/serial/sh-sci.c
index 2d9a06d..cd52dd6 100644
--- a/drivers/serial/sh-sci.c
+++ b/drivers/serial/sh-sci.c
@@ -916,10 +916,10 @@
spin_lock_irqsave(&port->lock, flags);
- xmit->tail += s->sg_tx.length;
+ xmit->tail += sg_dma_len(&s->sg_tx);
xmit->tail &= UART_XMIT_SIZE - 1;
- port->icount.tx += s->sg_tx.length;
+ port->icount.tx += sg_dma_len(&s->sg_tx);
async_tx_ack(s->desc_tx);
s->cookie_tx = -EINVAL;
@@ -1134,14 +1134,13 @@
*/
spin_lock_irq(&port->lock);
sg->offset = xmit->tail & (UART_XMIT_SIZE - 1);
- sg->dma_address = (sg_dma_address(sg) & ~(UART_XMIT_SIZE - 1)) +
+ sg_dma_address(sg) = (sg_dma_address(sg) & ~(UART_XMIT_SIZE - 1)) +
sg->offset;
- sg->length = min((int)CIRC_CNT(xmit->head, xmit->tail, UART_XMIT_SIZE),
+ sg_dma_len(sg) = min((int)CIRC_CNT(xmit->head, xmit->tail, UART_XMIT_SIZE),
CIRC_CNT_TO_END(xmit->head, xmit->tail, UART_XMIT_SIZE));
- sg->dma_length = sg->length;
spin_unlock_irq(&port->lock);
- BUG_ON(!sg->length);
+ BUG_ON(!sg_dma_len(sg));
desc = chan->device->device_prep_slave_sg(chan,
sg, s->sg_len_tx, DMA_TO_DEVICE,
@@ -1342,8 +1341,7 @@
sg_init_table(sg, 1);
sg_set_page(sg, virt_to_page(buf[i]), s->buf_len_rx,
(int)buf[i] & ~PAGE_MASK);
- sg->dma_address = dma[i];
- sg->dma_length = sg->length;
+ sg_dma_address(sg) = dma[i];
}
INIT_WORK(&s->work_rx, work_fn_rx);