nfs: fix sparse warnings

fs/nfs/nfs4state.c:788:34: warning: Using plain integer as NULL pointer
fs/nfs/delegation.c:52:34: warning: Using plain integer as NULL pointer
fs/nfs/idmap.c:312:12: warning: Using plain integer as NULL pointer
fs/nfs/callback_xdr.c:257:6: warning: Using plain integer as NULL pointer
fs/nfs/callback_xdr.c:270:6: warning: Using plain integer as NULL pointer
fs/nfs/callback_xdr.c:281:6: warning: Using plain integer as NULL pointer

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/fs/nfs/callback_xdr.c b/fs/nfs/callback_xdr.c
index c63eb720b68b..13619d24f023 100644
--- a/fs/nfs/callback_xdr.c
+++ b/fs/nfs/callback_xdr.c
@@ -254,7 +254,7 @@ static __be32 encode_attr_change(struct xdr_stream *xdr, const uint32_t *bitmap,
         if (!(bitmap[0] & FATTR4_WORD0_CHANGE))
                 return 0;
         p = xdr_reserve_space(xdr, 8);
-        if (unlikely(p == 0))
+        if (unlikely(!p))
                 return htonl(NFS4ERR_RESOURCE);
         p = xdr_encode_hyper(p, change);
         return 0;
@@ -267,7 +267,7 @@ static __be32 encode_attr_size(struct xdr_stream *xdr, const uint32_t *bitmap, u
         if (!(bitmap[0] & FATTR4_WORD0_SIZE))
                 return 0;
         p = xdr_reserve_space(xdr, 8);
-        if (unlikely(p == 0))
+        if (unlikely(!p))
                 return htonl(NFS4ERR_RESOURCE);
         p = xdr_encode_hyper(p, size);
         return 0;
@@ -278,7 +278,7 @@ static __be32 encode_attr_time(struct xdr_stream *xdr, const struct timespec *ti
         __be32 *p;
 
         p = xdr_reserve_space(xdr, 12);
-        if (unlikely(p == 0))
+        if (unlikely(!p))
                 return htonl(NFS4ERR_RESOURCE);
         p = xdr_encode_hyper(p, time->tv_sec);
         *p = htonl(time->tv_nsec);