tree 675cd7a2b5f9af5d922aa9f1e50f2ff65f9782c9
parent 29985b09613ba106a1ed0496988636d288600515
author Stefano Stabellini <sstabellini@kernel.org> 1492106276 -0700
committer Juergen Gross <jgross@suse.com> 1493716403 +0200

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>