cifs: use type __u32 instead of int for the oplock parameter

... and avoid implicit casting from a signed type. Also, pass oplock by value
instead by reference as we don't intend to change the value in
cifs_open_inode_helper().

Thanks to Jeff Layton for spotting this.

Reviewed-by: Jeff Layton <jlayton@samba.org>
Signed-off-by: Suresh Jayaraman <sjayaraman@suse.de>
Signed-off-by: Steve French <sfrench@us.ibm.com>

diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index de748c6..d33da45 100644 (file)
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -165,7 +165,7 @@ psx_client_can_cache:
 
 /* all arguments to this function must be checked for validity in caller */
 static inline int cifs_open_inode_helper(struct inode *inode,
-       struct cifsTconInfo *pTcon, int *oplock, FILE_ALL_INFO *buf,
+       struct cifsTconInfo *pTcon, __u32 oplock, FILE_ALL_INFO *buf,
        char *full_path, int xid)
 {
        struct cifsInodeInfo *pCifsInode = CIFS_I(inode);
@@ -207,11 +207,11 @@ client_can_cache:
                rc = cifs_get_inode_info(&inode, full_path, buf, inode->i_sb,
                                         xid, NULL);
 
-       if ((*oplock & 0xF) == OPLOCK_EXCLUSIVE) {
+       if ((oplock & 0xF) == OPLOCK_EXCLUSIVE) {
                pCifsInode->clientCanCacheAll = true;
                pCifsInode->clientCanCacheRead = true;
                cFYI(1, "Exclusive Oplock granted on inode %p", inode);
-       } else if ((*oplock & 0xF) == OPLOCK_READ)
+       } else if ((oplock & 0xF) == OPLOCK_READ)
                pCifsInode->clientCanCacheRead = true;
 
        return rc;
@@ -365,7 +365,7 @@ int cifs_open(struct inode *inode, struct file *file)
                goto out;
        }
 
-       rc = cifs_open_inode_helper(inode, tcon, &oplock, buf, full_path, xid);
+       rc = cifs_open_inode_helper(inode, tcon, oplock, buf, full_path, xid);
        if (rc != 0)
                goto out;