1 files changed, 10 insertions, 4 deletions

diff --git a/kernel/power/swsusp.c b/kernel/power/swsusp.c
index 17f669c83012..0b66659dc516 100644
--- a/kernel/power/swsusp.c
+++ b/kernel/power/swsusp.c
@@ -193,14 +193,13 @@ int swsusp_shrink_memory(void)
         printk("Shrinking memory...  ");
         do {
                 size = 2 * count_highmem_pages();
-                size += size / 50 + count_data_pages();
-                size += (size + PBES_PER_PAGE - 1) / PBES_PER_PAGE +
-                        PAGES_FOR_IO;
+                size += size / 50 + count_data_pages() + PAGES_FOR_IO;
                 tmp = size;
                 for_each_zone (zone)
                         if (!is_highmem(zone) && populated_zone(zone)) {
                                 tmp -= zone->free_pages;
                                 tmp += zone->lowmem_reserve[ZONE_NORMAL];
+                                tmp += snapshot_additional_pages(zone);
                         }
                 if (tmp > 0) {
                         tmp = __shrink_memory(tmp);
@@ -248,6 +247,9 @@ int swsusp_suspend(void)
         restore_processor_state();
 Restore_highmem:
         restore_highmem();
+        /* NOTE:  device_power_up() is just a resume() for devices
+         * that suspended with irqs off ... no overall powerup.
+         */
         device_power_up();
 Enable_irqs:
         local_irq_enable();
@@ -257,8 +259,12 @@ Enable_irqs:
 int swsusp_resume(void)
 {
         int error;
+
         local_irq_disable();
-        if (device_power_down(PMSG_FREEZE))
+        /* NOTE:  device_power_down() is just a suspend() with irqs off;
+         * it has no special "power things down" semantics
+         */
+        if (device_power_down(PMSG_PRETHAW))
                 printk(KERN_ERR "Some devices failed to power down, very bad\n");
         /* We'll ignore saved state, but this gets preempt count (etc) right */
         save_processor_state();