gpu: nvgpu: Add nvgpu/errno.h

Add an <nvgpu/errno.h> header file to explicitly include the -E* error
messages. Useful for header files with static inlines that return error
messages. In actual C code normally enough Linux/QNX headers bleed in
to get the error messages but header files with sparse includes do not
have this luxury.

Change-Id: I4833c7a6003578b9792bbf6b14cce3bd0adfec22
Signed-off-by: Alex Waterman <alexw@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1573307
Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>

1 files changed, 41 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/include/nvgpu/errno.h b/drivers/gpu/nvgpu/include/nvgpu/errno.h
new file mode 100644
index 00000000..12ba118e
--- /dev/null
+++ b/drivers/gpu/nvgpu/include/nvgpu/errno.h
@@ -0,0 +1,41 @@
+/*
+ * Copyright (c) 2017, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef __NVGPU_ERRNO_H__
+#define __NVGPU_ERRNO_H__
+
+/*
+ * Explicit include to get all the -E* error messages. Useful for header files
+ * with static inlines that return error messages. In actual C code normally
+ * enough Linux/QNX headers bleed in to get the error messages but header files
+ * with sparse includes do not have this luxury.
+ */
+
+#ifdef __KERNEL__
+#include <linux/errno.h>
+#endif
+
+/*
+ * TODO: add else path above for QNX.
+ */
+
+#endif