tegra: fd: Add wrapper for __alloc_fd

Modules like nvgpu and nvmap should to be able to allocate
all open fds and for this they need to call __alloc_fd()
rather than alloc_fd.
However, as __alloc_fd is not exported to modules, a wrapper
is being created and exported to the respective modules.

bug 200290850

Change-Id: Id245040842f71aadfc484711a23e8ce9dbfa872f
Signed-off-by: Pritesh Raithatha <praithatha@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1701552
GVS: Gerrit_Virtual_Submit
Reviewed-by: Sachin Nikam <snikam@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 23 insertions, 0 deletions

diff --git a/include/linux/platform/tegra/tegra_fd.h b/include/linux/platform/tegra/tegra_fd.h
new file mode 100644
index 000000000..c30daa03c
--- /dev/null
+++ b/include/linux/platform/tegra/tegra_fd.h
@@ -0,0 +1,23 @@
+/*
+ * Copyright (C) 2017-2018, NVIDIA Corporation.  All rights reserved.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#include <linux/fdtable.h>
+
+#ifndef __TEGRA_FD_H
+#define __TEGRA_FD_H
+
+int tegra_alloc_fd(struct files_struct *files, unsigned int start,
+                   unsigned int flags);
+
+#endif