[POWERPC] spufs: fail spu_create with invalid flags

At this time, all flags are invalid. Since we are
planning to actually add valid flags in the future,
we better check if any were passed by the user.

Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 4 insertions, 0 deletions

diff --git a/arch/powerpc/platforms/cell/spufs/inode.c b/arch/powerpc/platforms/cell/spufs/inode.c
index fed511a2b17f..1987697b23a0 100644
--- a/arch/powerpc/platforms/cell/spufs/inode.c
+++ b/arch/powerpc/platforms/cell/spufs/inode.c
@@ -304,6 +304,10 @@ long spufs_create_thread(struct nameidata *nd,
             nd->dentry != nd->dentry->d_sb->s_root)
                 goto out;
 
+        /* all flags are reserved */
+        if (flags)
+                goto out;
+
         dentry = lookup_create(nd, 1);
         ret = PTR_ERR(dentry);
         if (IS_ERR(dentry))