PM / Hibernate: Return error code when alloc_image_page() fails

Currently we return 0 in swsusp_alloc() when alloc_image_page() fails.
Fix that.  Also remove unneeded "error" variable since the only
useful value of error is -ENOMEM.

[rjw: Fixed up the changelog and changed subject.]

Signed-off-by: Stanislaw Gruszka <stf_xl@wp.pl>
Cc: stable@kernel.org
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>

diff --git a/kernel/power/snapshot.c b/kernel/power/snapshot.c
index 0dac75ea4456f040b14ae18e3dbbe5ce8332a108..64db648ff911e13eb09461e8ffa1a4266b19c306 100644 (file)
--- a/kernel/power/snapshot.c
+++ b/kernel/power/snapshot.c
@@ -1519,11 +1519,8 @@ static int
 swsusp_alloc(struct memory_bitmap *orig_bm, struct memory_bitmap *copy_bm,
                unsigned int nr_pages, unsigned int nr_highmem)
 {
-       int error = 0;
-
        if (nr_highmem > 0) {
-               error = get_highmem_buffer(PG_ANY);
-               if (error)
+               if (get_highmem_buffer(PG_ANY))
                        goto err_out;
                if (nr_highmem > alloc_highmem) {
                        nr_highmem -= alloc_highmem;
@@ -1546,7 +1543,7 @@ swsusp_alloc(struct memory_bitmap *orig_bm, struct memory_bitmap *copy_bm,
 
  err_out:
        swsusp_free();
-       return error;
+       return -ENOMEM;
 }
 
 asmlinkage int swsusp_save(void)