serial: 8250_dw: use pointer to uart local variable

The use of pointer will simplify enabling runtime PM for the driver.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20190806094322.64987-2-andriy.shevchenko@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/serial/8250/8250_dw.c b/drivers/tty/serial/8250/8250_dw.c
index 7b559f9..010d0a2 100644 (file)
--- a/drivers/tty/serial/8250/8250_dw.c
+++ b/drivers/tty/serial/8250/8250_dw.c
@@ -492,10 +492,10 @@ static void dw8250_setup_port(struct uart_port *p)
 
 static int dw8250_probe(struct platform_device *pdev)
 {
-       struct uart_8250_port uart = {};
+       struct uart_8250_port uart = {}, *up = &uart;
        struct resource *regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
        int irq = platform_get_irq(pdev, 0);
-       struct uart_port *p = &uart.port;
+       struct uart_port *p = &up->port;
        struct device *dev = &pdev->dev;
        struct dw8250_data *data;
        int err;
@@ -634,10 +634,10 @@ static int dw8250_probe(struct platform_device *pdev)
        if (p->fifosize) {
                data->dma.rxconf.src_maxburst = p->fifosize / 4;
                data->dma.txconf.dst_maxburst = p->fifosize / 4;
-               uart.dma = &data->dma;
+               up->dma = &data->dma;
        }
 
-       data->line = serial8250_register_8250_port(&uart);
+       data->line = serial8250_register_8250_port(up);
        if (data->line < 0) {
                err = data->line;
                goto err_reset;