rbd: silence bogus -Wmaybe-uninitialized warning

commit d4c2269b3d5d06a8ea434b1841fbcaec336ed396 upstream.

drivers/block/rbd.c: In function ‘rbd_watch_cb’:
drivers/block/rbd.c:3690:5: error: ‘struct_v’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
drivers/block/rbd.c:3759:5: note: ‘struct_v’ was declared here

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index e32badd..343cad9 100644 (file)
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -3756,7 +3756,7 @@ static void rbd_watch_cb(void *arg, u64 notify_id, u64 cookie,
        struct rbd_device *rbd_dev = arg;
        void *p = data;
        void *const end = p + data_len;
-       u8 struct_v;
+       u8 struct_v = 0;
        u32 len;
        u32 notify_op;
        int ret;