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authorRafael J. Wysocki <rjw@sisk.pl>2007-05-06 14:50:44 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-05-07 12:12:59 -0700
commit1525a2ad76f991eba9755f75c9b6d4d97abad25e (patch)
tree7e5307d825e1f8a55581a0b465865b9f2cc90af6 /kernel/power
parent04293355ac9dbe81bd01b89ca2adb58be34c2c60 (diff)
swsusp: fix error paths in snapshot_open
We forget to increase device_available if there's an error in snapshot_open(), so the snapshot device cannot be open at all after snapshot_open() has returned an error. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/power')
-rw-r--r--kernel/power/user.c10
1 files changed, 6 insertions, 4 deletions
diff --git a/kernel/power/user.c b/kernel/power/user.c
index 845acd84cb2..bd1771f7a64 100644
--- a/kernel/power/user.c
+++ b/kernel/power/user.c
@@ -49,12 +49,14 @@ static int snapshot_open(struct inode *inode, struct file *filp)
if (!atomic_add_unless(&device_available, -1, 0))
return -EBUSY;
- if ((filp->f_flags & O_ACCMODE) == O_RDWR)
+ if ((filp->f_flags & O_ACCMODE) == O_RDWR) {
+ atomic_inc(&device_available);
return -ENOSYS;
-
- if(create_basic_memory_bitmaps())
+ }
+ if(create_basic_memory_bitmaps()) {
+ atomic_inc(&device_available);
return -ENOMEM;
-
+ }
nonseekable_open(inode, filp);
data = &snapshot_state;
filp->private_data = data;