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serial: uartps: Move alias reading higher in probe() 

This cosmetic change is done only for having next patch much easier to
read. Moving id setup higher in probe is not affecting any usage of this
driver and it also simplify error path.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Michal Simek 2018-09-03 15:10:53 +02:00 committed by Greg Kroah-Hartman
parent 46a460f015
commit 14090ad180
1 changed files with 10 additions and 11 deletions
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21
drivers/tty/serial/xilinx_uartps.c
View File

@ -1416,6 +1416,16 @@ static int cdns_uart_probe(struct platform_device *pdev)
if (!port)
return -ENOMEM;
/* Look for a serialN alias */
id = of_alias_get_id(pdev->dev.of_node, "serial");
if (id < 0)
id = 0;
if (id >= CDNS_UART_NR_PORTS) {
dev_err(&pdev->dev, "Cannot get uart_port structure\n");
return -ENODEV;
}
cdns_uart_data->cdns_uart_driver = &cdns_uart_uart_driver;
match = of_match_node(cdns_uart_of_match, pdev->dev.of_node);
@ -1477,16 +1487,6 @@ static int cdns_uart_probe(struct platform_device *pdev)
&cdns_uart_data->clk_rate_change_nb))
dev_warn(&pdev->dev, "Unable to register clock notifier.\n");
#endif
/* Look for a serialN alias */
id = of_alias_get_id(pdev->dev.of_node, "serial");
if (id < 0)
id = 0;
if (id >= CDNS_UART_NR_PORTS) {
dev_err(&pdev->dev, "Cannot get uart_port structure\n");
rc = -ENODEV;
goto err_out_notif_unreg;
}
/* At this point, we've got an empty uart_port struct, initialize it */
spin_lock_init(&port->lock);
@ -1545,7 +1545,6 @@ err_out_pm_disable:
pm_runtime_disable(&pdev->dev);
pm_runtime_set_suspended(&pdev->dev);
pm_runtime_dont_use_autosuspend(&pdev->dev);
err_out_notif_unreg:
#ifdef CONFIG_COMMON_CLK
clk_notifier_unregister(cdns_uart_data->uartclk,
&cdns_uart_data->clk_rate_change_nb);