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H A Dpvcalls-front.cdiff 1ab134ca3151c55b6fc606857e71d9adb4c355d1 Tue Dec 05 08:38:54 CST 2017 Dan Carpenter <dan.carpenter@oracle.com> xen/pvcalls: Fix a check in pvcalls_front_remove()

bedata->ref can't be less than zero because it's unsigned. This affects
certain error paths in probe. We first set ->ref = -1 and then we set
it to a valid value later.

Fixes: 219681909913 ("xen/pvcalls: connect to the backend")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>