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| author | Stefano Stabellini <sstabellini@kernel.org> | 2017-04-13 19:57:56 +0200 |
|---|---|---|
| committer | Juergen Gross <jgross@suse.com> | 2017-05-02 11:13:23 +0200 |
| commit | 31d47266c6e599d76e84c9809f9ea2735d9cda5b (patch) | |
| tree | 675cd7a2b5f9af5d922aa9f1e50f2ff65f9782c9 /net | |
| parent | xen,kdump: handle pv domain in paddr_vmcoreinfo_note() (diff) | |
| download | linux-31d47266c6e599d76e84c9809f9ea2735d9cda5b.tar.xz linux-31d47266c6e599d76e84c9809f9ea2735d9cda5b.zip | |
xen/9pfs: initialize len to 0 to detect xenbus_read errors
In order to use "len" to check for xenbus_read errors properly, we need
to initialize len to 0 before passing it to xenbus_read.
CC: dan.carpenter@oracle.com
CC: jgross@suse.com
CC: boris.ostrovsky@oracle.com
CC: Eric Van Hensbergen <ericvh@gmail.com>
CC: Ron Minnich <rminnich@sandia.gov>
CC: Latchesar Ionkov <lucho@ionkov.net>
CC: v9fs-developer@lists.sourceforge.net
Signed-off-by: Stefano Stabellini <stefano@aporeto.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
Diffstat (limited to 'net')
| -rw-r--r-- | net/9p/trans_xen.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/9p/trans_xen.c b/net/9p/trans_xen.c index 47864245c0d4..71e85643b3f9 100644 --- a/net/9p/trans_xen.c +++ b/net/9p/trans_xen.c @@ -386,7 +386,7 @@ static int xen_9pfs_front_probe(struct xenbus_device *dev, struct xenbus_transaction xbt; struct xen_9pfs_front_priv *priv = NULL; char *versions; - unsigned int max_rings, max_ring_order, len; + unsigned int max_rings, max_ring_order, len = 0; versions = xenbus_read(XBT_NIL, dev->otherend, "versions", &len); if (!len) |