[PATCH] swsusp: add check for suspension of X-controlled devices
It is unsafe to suspend devices if the hardware is controlled by X. Add an
extra check to prevent this from happening.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/drivers/base/power/suspend.c b/drivers/base/power/suspend.c
index 8660779..bdb6066 100644
--- a/drivers/base/power/suspend.c
+++ b/drivers/base/power/suspend.c
@@ -8,6 +8,7 @@
*
*/
+#include <linux/vt_kern.h>
#include <linux/device.h>
#include "../base.h"
#include "power.h"
@@ -62,7 +63,6 @@
return error;
}
-
/**
* device_suspend - Save state and stop all devices in system.
* @state: Power state to put each device in.
@@ -82,6 +82,9 @@
{
int error = 0;
+ if (!is_console_suspend_safe())
+ return -EINVAL;
+
down(&dpm_sem);
down(&dpm_list_sem);
while (!list_empty(&dpm_active) && error == 0) {