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