serial-uartlite: Do not use static struct uart_driver out of probe()

ulite_uart_suspend()/resume() and remove() are using static reference
to struct uart_driver. Assign this referece to private data structure
as preparation step for dynamic struct uart_driver allocation.

Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/serial/uartlite.c b/drivers/tty/serial/uartlite.c
index 441a216..64c7248 100644 (file)
--- a/drivers/tty/serial/uartlite.c
+++ b/drivers/tty/serial/uartlite.c
@@ -63,6 +63,7 @@ static struct uart_port *console_port;
 struct uartlite_data {
        const struct uartlite_reg_ops *reg_ops;
        struct clk *clk;
+       struct uart_driver *ulite_uart_driver;
 };
 
 struct uartlite_reg_ops {
@@ -691,10 +692,11 @@ static int ulite_assign(struct device *dev, int id, u32 base, int irq,
 static int ulite_release(struct device *dev)
 {
        struct uart_port *port = dev_get_drvdata(dev);
+       struct uartlite_data *pdata = port->private_data;
        int rc = 0;
 
        if (port) {
-               rc = uart_remove_one_port(&ulite_uart_driver, port);
+               rc = uart_remove_one_port(pdata->ulite_uart_driver, port);
                dev_set_drvdata(dev, NULL);
                port->mapbase = 0;
        }
@@ -711,9 +713,10 @@ static int ulite_release(struct device *dev)
 static int __maybe_unused ulite_suspend(struct device *dev)
 {
        struct uart_port *port = dev_get_drvdata(dev);
+       struct uartlite_data *pdata = port->private_data;
 
        if (port)
-               uart_suspend_port(&ulite_uart_driver, port);
+               uart_suspend_port(pdata->ulite_uart_driver, port);
 
        return 0;
 }
@@ -727,9 +730,10 @@ static int __maybe_unused ulite_suspend(struct device *dev)
 static int __maybe_unused ulite_resume(struct device *dev)
 {
        struct uart_port *port = dev_get_drvdata(dev);
+       struct uartlite_data *pdata = port->private_data;
 
        if (port)
-               uart_resume_port(&ulite_uart_driver, port);
+               uart_resume_port(pdata->ulite_uart_driver, port);
 
        return 0;
 }
@@ -804,6 +808,7 @@ static int ulite_probe(struct platform_device *pdev)
                pdata->clk = NULL;
        }
 
+       pdata->ulite_uart_driver = &ulite_uart_driver;
        ret = clk_prepare_enable(pdata->clk);
        if (ret) {
                dev_err(&pdev->dev, "Failed to prepare clock\n");