[PATCH] swsusp: two simplifications

The following patch simplifies the progress meter in disk.c:free_some_memory()
and makes disk.c:pm_suspend_disk() call device_resume() explicitly in the
suspend path.
Signed-off-by: NRafael J. Wysocki <rjw@sisk.pl>
Acked-by: NPavel Machek <pavel@suse.cz>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

kernel/power/disk.c

@@ -92,10 +92,7 @@ static void free_some_memory(void)
 	printk("Freeing memory...  ");
 	while ((tmp = shrink_all_memory(10000))) {
 		pages += tmp;
-		printk("\b%c", p[i]);
-		i++;
-		if (i > 3)
-			i = 0;
+		printk("\b%c", p[i++ % 4]);
 	}
 	printk("\bdone (%li pages freed)\n", pages);
 }
@@ -177,13 +174,12 @@ int pm_suspend_disk(void)
 		goto Done;
 
 	if (in_suspend) {
+		device_resume();
 		pr_debug("PM: writing image.\n");
 		error = swsusp_write();
 		if (!error)
 			power_down(pm_disk_mode);
 		else {
-		/* swsusp_write can not fail in device_resume,
-		   no need to do second device_resume */
 			swsusp_free();
 			unprepare_processes();
 			return error;

kernel/power/swsusp.c

@@ -562,7 +562,7 @@ int enough_swap(unsigned nr_pages)
 int swsusp_write(void)
 {
 	int error;
-	device_resume();
+
 	lock_swapdevices();
 	error = write_suspend_image();
 	/* This will unlock ignored swap devices since writing is finished */