Currently, DMA properties on the DT are ignored when using the 8250_dw
driver. With this patch, DMA will be used when available.
Signed-off-by: Emilio López <emilio@xxxxxxxxxxxxx>
---
drivers/tty/serial/8250/8250_dw.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/tty/serial/8250/8250_dw.c b/drivers/tty/serial/8250/8250_dw.c
index ed31135..f75c0bf 100644
--- a/drivers/tty/serial/8250/8250_dw.c
+++ b/drivers/tty/serial/8250/8250_dw.c
@@ -222,6 +222,8 @@ static int dw8250_probe_of(struct uart_port *p,
struct dw8250_data *data)
{
struct device_node *np = p->dev->of_node;
+ struct uart_8250_port *up = container_of(p, struct uart_8250_port,
+ port);
u32 val;
bool has_ucv = true;
@@ -254,11 +256,14 @@ static int dw8250_probe_of(struct uart_port *p,
}
}
if (has_ucv)
- dw8250_setup_port(container_of(p, struct uart_8250_port, port));
+ dw8250_setup_port(up);
if (!of_property_read_u32(np, "reg-shift", &val))
p->regshift = val;
+ if (of_get_property(np, "dmas", NULL))
+ up->dma = &data->dma;
+
/* clock got configured through clk api, all done */
if (p->uartclk)
return 0;
--
2.0.0
--
To unsubscribe from this list: send the line "unsubscribe dmaengine" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
