xen: fix build when SYSRQ is disabled

[safe/jmp/linux-2.6] / drivers / xen / manage.c

diff --git a/drivers/xen/manage.c b/drivers/xen/manage.c
index 0d61db1..07e857b 100644 (file)
--- a/drivers/xen/manage.c
+++ b/drivers/xen/manage.c
@@ -3,6 +3,7 @@
  */
 #include <linux/kernel.h>
 #include <linux/err.h>
+#include <linux/slab.h>
 #include <linux/reboot.h>
 #include <linux/sysrq.h>
 #include <linux/stop_machine.h>
@@ -43,7 +44,6 @@ static int xen_suspend(void *data)
        if (err) {
                printk(KERN_ERR "xen_suspend: sysdev_suspend failed: %d\n",
                        err);
-               device_power_up(PMSG_RESUME);
                return err;
        }
 
@@ -62,14 +62,14 @@ static int xen_suspend(void *data)
        gnttab_resume();
        xen_mm_unpin_all();
 
-       sysdev_resume();
-
        if (!*cancelled) {
                xen_irq_resume();
                xen_console_resume();
                xen_timer_resume();
        }
 
+       sysdev_resume();
+
        return 0;
 }
 
@@ -87,48 +87,50 @@ static void do_suspend(void)
        err = freeze_processes();
        if (err) {
                printk(KERN_ERR "xen suspend: freeze failed %d\n", err);
-               return;
+               goto out;
        }
 #endif
 
-       err = device_suspend(PMSG_SUSPEND);
+       err = dpm_suspend_start(PMSG_SUSPEND);
        if (err) {
-               printk(KERN_ERR "xen suspend: device_suspend %d\n", err);
-               goto out;
+               printk(KERN_ERR "xen suspend: dpm_suspend_start %d\n", err);
+               goto out_thaw;
        }
 
-       printk("suspending xenbus...\n");
-       /* XXX use normal device tree? */
-       xenbus_suspend();
+       printk(KERN_DEBUG "suspending xenstore...\n");
+       xs_suspend();
 
-       err = device_power_down(PMSG_SUSPEND);
+       err = dpm_suspend_noirq(PMSG_SUSPEND);
        if (err) {
-               printk(KERN_ERR "device_power_down failed: %d\n", err);
-               goto resume_devices;
+               printk(KERN_ERR "dpm_suspend_noirq failed: %d\n", err);
+               goto out_resume;
        }
 
        err = stop_machine(xen_suspend, &cancelled, cpumask_of(0));
+
+       dpm_resume_noirq(PMSG_RESUME);
+
        if (err) {
                printk(KERN_ERR "failed to start xen_suspend: %d\n", err);
-               goto out;
+               cancelled = 1;
        }
 
+out_resume:
        if (!cancelled) {
                xen_arch_resume();
-               xenbus_resume();
+               xs_resume();
        } else
-               xenbus_suspend_cancel();
+               xs_suspend_cancel();
 
-       device_power_up(PMSG_RESUME);
-
-resume_devices:
-       device_resume(PMSG_RESUME);
+       dpm_resume_end(PMSG_RESUME);
 
        /* Make sure timer events get retriggered on all CPUs */
        clock_was_set();
-out:
+
+out_thaw:
 #ifdef CONFIG_PREEMPT
        thaw_processes();
+out:
 #endif
        shutting_down = SHUTDOWN_INVALID;
 }
@@ -183,6 +185,7 @@ static void shutdown_handler(struct xenbus_watch *watch,
        kfree(str);
 }
 
+#ifdef CONFIG_MAGIC_SYSRQ
 static void sysrq_handler(struct xenbus_watch *watch, const char **vec,
                          unsigned int len)
 {
@@ -212,15 +215,16 @@ static void sysrq_handler(struct xenbus_watch *watch, const char **vec,
                handle_sysrq(sysrq_key, NULL);
 }
 
-static struct xenbus_watch shutdown_watch = {
-       .node = "control/shutdown",
-       .callback = shutdown_handler
-};
-
 static struct xenbus_watch sysrq_watch = {
        .node = "control/sysrq",
        .callback = sysrq_handler
 };
+#endif
+
+static struct xenbus_watch shutdown_watch = {
+       .node = "control/shutdown",
+       .callback = shutdown_handler
+};
 
 static int setup_shutdown_watcher(void)
 {
@@ -232,11 +236,13 @@ static int setup_shutdown_watcher(void)
                return err;
        }
 
+#ifdef CONFIG_MAGIC_SYSRQ
        err = register_xenbus_watch(&sysrq_watch);
        if (err) {
                printk(KERN_ERR "Failed to set sysrq watcher\n");
                return err;
        }
+#endif
 
        return 0;
 }