Merge branch 'stable/xen.pm.bug-fixes' of git://git.kernel.org/pub/scm/linux/kernel...

* 'stable/xen.pm.bug-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
  xen: use freeze/restore/thaw PM events for suspend/resume/chkpt
  xen: xenbus PM events support

diff --git a/drivers/xen/manage.c b/drivers/xen/manage.c
index ebb2928..95143dd 100644 (file)
--- a/drivers/xen/manage.c
+++ b/drivers/xen/manage.c
@@ -61,7 +61,7 @@ static void xen_post_suspend(int cancelled)
        xen_mm_unpin_all();
 }
 
-#ifdef CONFIG_PM_SLEEP
+#ifdef CONFIG_HIBERNATION
 static int xen_suspend(void *data)
 {
        struct suspend_info *si = data;
@@ -69,7 +69,7 @@ static int xen_suspend(void *data)
 
        BUG_ON(!irqs_disabled());
 
-       err = sysdev_suspend(PMSG_SUSPEND);
+       err = sysdev_suspend(PMSG_FREEZE);
        if (err) {
                printk(KERN_ERR "xen_suspend: sysdev_suspend failed: %d\n",
                        err);
@@ -118,7 +118,7 @@ static void do_suspend(void)
        }
 #endif
 
-       err = dpm_suspend_start(PMSG_SUSPEND);
+       err = dpm_suspend_start(PMSG_FREEZE);
        if (err) {
                printk(KERN_ERR "xen suspend: dpm_suspend_start %d\n", err);
                goto out_thaw;
@@ -127,7 +127,7 @@ static void do_suspend(void)
        printk(KERN_DEBUG "suspending xenstore...\n");
        xs_suspend();
 
-       err = dpm_suspend_noirq(PMSG_SUSPEND);
+       err = dpm_suspend_noirq(PMSG_FREEZE);
        if (err) {
                printk(KERN_ERR "dpm_suspend_noirq failed: %d\n", err);
                goto out_resume;
@@ -147,7 +147,7 @@ static void do_suspend(void)
 
        err = stop_machine(xen_suspend, &si, cpumask_of(0));
 
-       dpm_resume_noirq(PMSG_RESUME);
+       dpm_resume_noirq(si.cancelled ? PMSG_THAW : PMSG_RESTORE);
 
        if (err) {
                printk(KERN_ERR "failed to start xen_suspend: %d\n", err);
@@ -161,7 +161,7 @@ out_resume:
        } else
                xs_suspend_cancel();
 
-       dpm_resume_end(PMSG_RESUME);
+       dpm_resume_end(si.cancelled ? PMSG_THAW : PMSG_RESTORE);
 
        /* Make sure timer events get retriggered on all CPUs */
        clock_was_set();
@@ -173,7 +173,7 @@ out:
 #endif
        shutting_down = SHUTDOWN_INVALID;
 }
-#endif /* CONFIG_PM_SLEEP */
+#endif /* CONFIG_HIBERNATION */
 
 struct shutdown_handler {
        const char *command;
@@ -202,7 +202,7 @@ static void shutdown_handler(struct xenbus_watch *watch,
                { "poweroff",   do_poweroff },
                { "halt",       do_poweroff },
                { "reboot",     do_reboot   },
-#ifdef CONFIG_PM_SLEEP
+#ifdef CONFIG_HIBERNATION
                { "suspend",    do_suspend  },
 #endif
                {NULL, NULL},

diff --git a/drivers/xen/xenbus/xenbus_probe.c b/drivers/xen/xenbus/xenbus_probe.c
index baa65e7..7397695 100644 (file)
--- a/drivers/xen/xenbus/xenbus_probe.c
+++ b/drivers/xen/xenbus/xenbus_probe.c
@@ -577,7 +577,7 @@ void xenbus_dev_changed(const char *node, struct xen_bus_type *bus)
 }
 EXPORT_SYMBOL_GPL(xenbus_dev_changed);
 
-int xenbus_dev_suspend(struct device *dev, pm_message_t state)
+int xenbus_dev_suspend(struct device *dev)
 {
        int err = 0;
        struct xenbus_driver *drv;
@@ -590,7 +590,7 @@ int xenbus_dev_suspend(struct device *dev, pm_message_t state)
                return 0;
        drv = to_xenbus_driver(dev->driver);
        if (drv->suspend)
-               err = drv->suspend(xdev, state);
+               err = drv->suspend(xdev);
        if (err)
                printk(KERN_WARNING
                       "xenbus: suspend %s failed: %i\n", dev_name(dev), err);
@@ -642,6 +642,14 @@ int xenbus_dev_resume(struct device *dev)
 }
 EXPORT_SYMBOL_GPL(xenbus_dev_resume);
 
+int xenbus_dev_cancel(struct device *dev)
+{
+       /* Do nothing */
+       DPRINTK("cancel");
+       return 0;
+}
+EXPORT_SYMBOL_GPL(xenbus_dev_cancel);
+
 /* A flag to determine if xenstored is 'ready' (i.e. has started) */
 int xenstored_ready = 0;
 

diff --git a/drivers/xen/xenbus/xenbus_probe.h b/drivers/xen/xenbus/xenbus_probe.h
index 2466581..888b990 100644 (file)
--- a/drivers/xen/xenbus/xenbus_probe.h
+++ b/drivers/xen/xenbus/xenbus_probe.h
@@ -64,8 +64,9 @@ extern void xenbus_dev_changed(const char *node, struct xen_bus_type *bus);
 
 extern void xenbus_dev_shutdown(struct device *_dev);
 
-extern int xenbus_dev_suspend(struct device *dev, pm_message_t state);
+extern int xenbus_dev_suspend(struct device *dev);
 extern int xenbus_dev_resume(struct device *dev);
+extern int xenbus_dev_cancel(struct device *dev);
 
 extern void xenbus_otherend_changed(struct xenbus_watch *watch,
                                    const char **vec, unsigned int len,

diff --git a/drivers/xen/xenbus/xenbus_probe_frontend.c b/drivers/xen/xenbus/xenbus_probe_frontend.c
index 5bcc2d6..b6a2690 100644 (file)
--- a/drivers/xen/xenbus/xenbus_probe_frontend.c
+++ b/drivers/xen/xenbus/xenbus_probe_frontend.c
@@ -85,6 +85,14 @@ static struct device_attribute xenbus_frontend_dev_attrs[] = {
        __ATTR_NULL
 };
 
+static const struct dev_pm_ops xenbus_pm_ops = {
+       .suspend        = xenbus_dev_suspend,
+       .resume         = xenbus_dev_resume,
+       .freeze         = xenbus_dev_suspend,
+       .thaw           = xenbus_dev_cancel,
+       .restore        = xenbus_dev_resume,
+};
+
 static struct xen_bus_type xenbus_frontend = {
        .root = "device",
        .levels = 2,            /* device/type/<id> */
@@ -100,8 +108,7 @@ static struct xen_bus_type xenbus_frontend = {
                .shutdown       = xenbus_dev_shutdown,
                .dev_attrs      = xenbus_frontend_dev_attrs,
 
-               .suspend        = xenbus_dev_suspend,
-               .resume         = xenbus_dev_resume,
+               .pm             = &xenbus_pm_ops,
        },
 };
 

diff --git a/include/xen/xenbus.h b/include/xen/xenbus.h
index 7a1d15f..5467369 100644 (file)
--- a/include/xen/xenbus.h
+++ b/include/xen/xenbus.h
@@ -92,7 +92,7 @@ struct xenbus_driver {
        void (*otherend_changed)(struct xenbus_device *dev,
                                 enum xenbus_state backend_state);
        int (*remove)(struct xenbus_device *dev);
-       int (*suspend)(struct xenbus_device *dev, pm_message_t state);
+       int (*suspend)(struct xenbus_device *dev);
        int (*resume)(struct xenbus_device *dev);
        int (*uevent)(struct xenbus_device *, struct kobj_uevent_env *);
        struct device_driver driver;