UBI: silence a warning

Linux-MTD Mailing List linux-mtd at lists.infradead.org
Tue Jan 8 02:59:01 EST 2008


Gitweb:     http://git.infradead.org/?p=mtd-2.6.git;a=commit;h=54b2c8f93d7c3ddc04b55666b878fec437d32983
Commit:     54b2c8f93d7c3ddc04b55666b878fec437d32983
Parent:     393852ecfeec575ac78216b0eb58e4fd92f0816c
Author:     Jesper Juhl <jesper.juhl at gmail.com>
AuthorDate: Thu Dec 13 23:53:08 2007 +0100
Committer:  Artem Bityutskiy <Artem.Bityutskiy at nokia.com>
CommitDate: Wed Dec 26 19:15:14 2007 +0200

    UBI: silence a warning
    
    This patch silences the following warning :
    
      drivers/mtd/ubi/vmt.c:73: warning: 'ret' may be used uninitialized in this function
    
    gcc can't see that we always initialize ret in all situations where it is
    actually used. The one case where it's not initialized is when we BUG(),
    but gcc doesn't know that we won't then continue and use an uninitialized
    'ret'.
    
    This patch results in code that does exactely the same as before, but it
    also makes gcc shut up, so we generate one less line of warning noise.
    
    Signed-off-by: Jesper Juhl <jesper.juhl at gmail.com>
    Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy at nokia.com>
---
 drivers/mtd/ubi/vmt.c |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/mtd/ubi/vmt.c b/drivers/mtd/ubi/vmt.c
index 88629a3..e44948d 100644
--- a/drivers/mtd/ubi/vmt.c
+++ b/drivers/mtd/ubi/vmt.c
@@ -70,13 +70,14 @@ static struct device_attribute attr_vol_upd_marker =
 static ssize_t vol_attribute_show(struct device *dev,
 				  struct device_attribute *attr, char *buf)
 {
-	int ret;
+	int ret = -ENODEV;
+
 	struct ubi_volume *vol = container_of(dev, struct ubi_volume, dev);
 
 	spin_lock(&vol->ubi->volumes_lock);
 	if (vol->removed) {
 		spin_unlock(&vol->ubi->volumes_lock);
-		return -ENODEV;
+		return ret;
 	}
 	if (attr == &attr_vol_reserved_ebs)
 		ret = sprintf(buf, "%d\n", vol->reserved_pebs);



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