[POWERPC] spufs: return an error in spu_create is isolated create isnt supported

This changes the spu_create system call to return an error (-ENODEV) if
and isolated spu context is requested on hardware that doesn't support
isolated mode.

Tested on systemsim with and without isolation support

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>

diff --git a/arch/powerpc/platforms/cell/spufs/inode.c b/arch/powerpc/platforms/cell/spufs/inode.c
index a3ca06b..c7d0107 100644 (file)
--- a/arch/powerpc/platforms/cell/spufs/inode.c
+++ b/arch/powerpc/platforms/cell/spufs/inode.c
@@ -323,6 +323,10 @@ static int spufs_create_context(struct inode *inode,
            == SPU_CREATE_ISOLATE)
                goto out_unlock;
 
+       ret = -ENODEV;
+       if ((flags & SPU_CREATE_ISOLATE) && !isolated_loader)
+               goto out_unlock;
+
        ret = spufs_mkdir(inode, dentry, flags, mode & S_IRWXUGO);
        if (ret)
                goto out_unlock;