"Rafael J. Wysocki" <[email protected]> wrote:
>
> 1) Remove the console-switching code from the suspend part of the swsusp
> userland interface and let the userland tools switch the console.
>
> 2) It is unsafe to suspend devices if the hardware is controlled by X. Add
> an extra check to prevent this from happening.
>
> ...
> @@ -82,6 +85,12 @@ int device_suspend(pm_message_t state)
> {
> int error = 0;
>
> + /* It is unsafe to suspend devices while X has control of the
> + * hardware. Make sure we are running on a kernel-controlled console.
> + */
> + if (vc_cons[fg_console].d->vc_mode != KD_TEXT)
> + return -EINVAL;
> +
> down(&dpm_sem);
Does this mean that swsusp simply won't work if invoked while X is running
and being displayed? If so, that sounds like a pretty severe limitation.
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