NFSv4: Kill braindead gcc warnings

nfs4_open_revalidate: 'res' may be used uninitialized
nfs4_callback_compound: ‘hdr_res.nops’ may be used uninitialized
			'op_nr’ may be used uninitialized
encode_getattr_res: ‘savep’ may be used uninitialized

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

diff --git a/fs/nfs/callback_xdr.c b/fs/nfs/callback_xdr.c
index 7c33b9a..05c38cf 100644 (file)
--- a/fs/nfs/callback_xdr.c
+++ b/fs/nfs/callback_xdr.c
@@ -330,7 +330,7 @@ static unsigned encode_op_hdr(struct xdr_stream *xdr, uint32_t op, uint32_t res)
 
 static unsigned encode_getattr_res(struct svc_rqst *rqstp, struct xdr_stream *xdr, const struct cb_getattrres *res)
 {
-       uint32_t *savep;
+       uint32_t *savep = NULL;
        unsigned status = res->status;
        
        if (unlikely(status != 0))
@@ -358,23 +358,26 @@ static unsigned process_op(struct svc_rqst *rqstp,
                struct xdr_stream *xdr_in, void *argp,
                struct xdr_stream *xdr_out, void *resp)
 {
-       struct callback_op *op;
-       unsigned int op_nr;
+       struct callback_op *op = &callback_ops[0];
+       unsigned int op_nr = OP_CB_ILLEGAL;
        unsigned int status = 0;
        long maxlen;
        unsigned res;
 
        dprintk("%s: start\n", __FUNCTION__);
        status = decode_op_hdr(xdr_in, &op_nr);
-       if (unlikely(status != 0)) {
-               op_nr = OP_CB_ILLEGAL;
-               op = &callback_ops[0];
-       } else if (unlikely(op_nr != OP_CB_GETATTR && op_nr != OP_CB_RECALL)) {
-               op_nr = OP_CB_ILLEGAL;
-               op = &callback_ops[0];
-               status = htonl(NFS4ERR_OP_ILLEGAL);
-       } else
-               op = &callback_ops[op_nr];
+       if (likely(status == 0)) {
+               switch (op_nr) {
+                       case OP_CB_GETATTR:
+                       case OP_CB_RECALL:
+                               op = &callback_ops[op_nr];
+                               break;
+                       default:
+                               op_nr = OP_CB_ILLEGAL;
+                               op = &callback_ops[0];
+                               status = htonl(NFS4ERR_OP_ILLEGAL);
+               }
+       }
 
        maxlen = xdr_out->end - xdr_out->p;
        if (maxlen > 0 && maxlen < PAGE_SIZE) {
@@ -416,6 +419,7 @@ static int nfs4_callback_compound(struct svc_rqst *rqstp, void *argp, void *resp
        decode_compound_hdr_arg(&xdr_in, &hdr_arg);
        hdr_res.taglen = hdr_arg.taglen;
        hdr_res.tag = hdr_arg.tag;
+       hdr_res.nops = NULL;
        encode_compound_hdr_res(&xdr_out, &hdr_res);
 
        for (;;) {

diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 305bea2..77a565e 100644 (file)
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -908,7 +908,7 @@ out_put_state_owner:
 static struct nfs4_state *nfs4_open_delegated(struct inode *inode, int flags, struct rpc_cred *cred)
 {
        struct nfs4_exception exception = { };
-       struct nfs4_state *res;
+       struct nfs4_state *res = ERR_PTR(-EIO);
        int err;
 
        do {