[PATCH] fuse: consolidate device errors

Return consistent error values for the case when the opened device file has no
mount associated yet.
Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

fs/fuse/dev.c

@@ -739,7 +739,7 @@ static ssize_t fuse_dev_writev(struct file *file, const struct iovec *iov,
 	struct fuse_copy_state cs;
 	struct fuse_conn *fc = fuse_get_conn(file);
 	if (!fc)
-		return -ENODEV;
+		return -EPERM;
 
 	fuse_copy_init(&cs, fc, 0, NULL, iov, nr_segs);
 	if (nbytes < sizeof(struct fuse_out_header))
@@ -930,7 +930,7 @@ static int fuse_dev_fasync(int fd, struct file *file, int on)
 {
 	struct fuse_conn *fc = fuse_get_conn(file);
 	if (!fc)
-		return -ENODEV;
+		return -EPERM;
 
 	/* No locking - fasync_helper does its own locking */
 	return fasync_helper(fd, file, on, &fc->fasync);