"Govindraj.R" <govindraj.raja@xxxxxx> writes:
> Adapts omap-serial driver to use pm_runtime API's.
[...]
> @@ -1065,19 +1123,18 @@ static struct uart_driver serial_omap_reg = {
> .cons = OMAP_CONSOLE,
> };
>
> -static int
> -serial_omap_suspend(struct platform_device *pdev, pm_message_t state)
> +static int serial_omap_suspend(struct device *dev)
> {
> - struct uart_omap_port *up = platform_get_drvdata(pdev);
> + struct uart_omap_port *up = dev_get_drvdata(dev);
>
> if (up)
> uart_suspend_port(&serial_omap_reg, &up->port);
> return 0;
> }
>
> -static int serial_omap_resume(struct platform_device *dev)
> +static int serial_omap_resume(struct device *dev)
> {
> - struct uart_omap_port *up = platform_get_drvdata(dev);
> + struct uart_omap_port *up = dev_get_drvdata(dev);
>
> if (up)
> uart_resume_port(&serial_omap_reg, &up->port);
These functions need to be wrapped in #ifdef CONFIG_SUSPEND, otherwise,
when building with !CONFIG_SUSPEND you'll get :
/work/kernel/omap/pm/drivers/tty/serial/omap-serial.c:1134:12: warning: 'serial_omap_suspend' defined but not used
/work/kernel/omap/pm/drivers/tty/serial/omap-serial.c:1150:12: warning: 'serial_omap_resume' defined but not used
[...]
> +static int serial_omap_runtime_suspend(struct device *dev)
> +{
> + struct uart_omap_port *up = dev_get_drvdata(dev);
> + struct omap_uart_port_info *pdata = dev->platform_data;
> +
> + if (!up)
> + return -EINVAL;
> +
> + if (!pdata->enable_wakeup || !pdata->get_context_loss_count)
> + return 0;
> +
> + if (pdata->get_context_loss_count)
> + up->context_loss_cnt = pdata->get_context_loss_count(dev);
> +
> + if (device_may_wakeup(dev)) {
> + if (!up->wakeups_enabled) {
> + pdata->enable_wakeup(up->pdev, true);
> + up->wakeups_enabled = true;
> + }
> + } else {
> + if (up->wakeups_enabled) {
> + pdata->enable_wakeup(up->pdev, false);
> + up->wakeups_enabled = false;
> + }
> + }
> +
> + return 0;
> +}
> +
> +static int serial_omap_runtime_resume(struct device *dev)
> +{
> + struct uart_omap_port *up = dev_get_drvdata(dev);
> + struct omap_uart_port_info *pdata = dev->platform_data;
> +
> + if (up) {
> + if (pdata->get_context_loss_count) {
> + u32 loss_cnt = pdata->get_context_loss_count(dev);
> +
> + if (up->context_loss_cnt != loss_cnt)
> + serial_omap_restore_context(up);
> + }
> + }
> +
> return 0;
> }
Similarily, thse need to be wrapped with #ifdef CONFIG_PM_RUNTIME,
otherwise, when !CONFIG_PM_RUNTIME:
/work/kernel/omap/pm/drivers/tty/serial/omap-serial.c:1498:12: warning: 'serial_omap_runtime_suspend' defined but not used
/work/kernel/omap/pm/drivers/tty/serial/omap-serial.c:1531:12: warning: 'serial_omap_runtime_resume' defined but not used
> +static const struct dev_pm_ops serial_omap_dev_pm_ops = {
> + SET_SYSTEM_SLEEP_PM_OPS(serial_omap_suspend, serial_omap_resume)
> + SET_RUNTIME_PM_OPS(serial_omap_runtime_suspend,
> + serial_omap_runtime_resume, NULL)
> +};
> +
Note that you don't need #else parts to the above #ifdefs since
the SET_*_OPS() macros used here take care of that.
Kevin
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