[PATCH] swsusp: fix breakage with swap on LVM

Restore the compatibility with the older code and make it possible to
suspend if the kernel command line doesn't contain the "resume=" argument

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/kernel/power/swsusp.c b/kernel/power/swsusp.c
index 4e90905f0e87ec1e394acc9c61251b0a2505b3ac..2d9d08f72f76f82cc57c3b1c06a46b4e8f2df820 100644 (file)
--- a/kernel/power/swsusp.c
+++ b/kernel/power/swsusp.c
@@ -153,13 +153,11 @@ static int swsusp_swap_check(void) /* This is called before saving image */
 {
        int i;
 
-       if (!swsusp_resume_device)
-               return -ENODEV;
        spin_lock(&swap_lock);
        for (i = 0; i < MAX_SWAPFILES; i++) {
                if (!(swap_info[i].flags & SWP_WRITEOK))
                        continue;
-               if (is_resume_device(swap_info + i)) {
+               if (!swsusp_resume_device || is_resume_device(swap_info + i)) {
                        spin_unlock(&swap_lock);
                        root_swap = i;
                        return 0;