-mm swsusp: fix highmem handling

[Pavel Machek <pavel@ucw.cz>]

Hi!

This fixes highmem handling, and adds some comments so that others do
not fall into the same trap I fallen in: code does not continue below
swsusp_arch_resume if things go okay.

Please apply,
								Pavel

--- clean-mm/kernel/power/swsusp.c	2004-07-28 23:39:49.000000000 +0200
+++ linux-mm/kernel/power/swsusp.c	2004-08-09 11:54:04.000000000 +0200
@@ -870,8 +866,12 @@
 	local_irq_disable();
 	save_processor_state();
 	error = swsusp_arch_suspend();
+	/* Restore control flow magically appears here */
 	restore_processor_state();
 	local_irq_enable();
+#ifdef CONFIG_HIGHMEM
+	restore_highmem();
+#endif
 	return error;
 }
 
@@ -890,8 +889,12 @@
 {
 	int error;
 	local_irq_disable();
 	save_processor_state();
 	error = swsusp_arch_resume();
+	/* Code below is only ever reached in case of failure. Otherwise
+	 * execution continues at place where swsusp_arch_suspend was called
+         */
+	BUG_ON(!error);
 	restore_processor_state();
 	local_irq_enable();
 	return error;



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