linux-kernel - [PATCH Xilinx Alveo libfdt prep 1/1] Export subset of libfdt symbols for use by other drivers.

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Date:   Sat, 28 Nov 2020 15:56:59 -0800
From:   Sonal Santan <sonal.santan@...inx.com>
To:     <linux-kernel@...r.kernel.org>
CC:     Sonal Santan <sonal.santan@...inx.com>,
        <linux-fpga@...r.kernel.org>, <maxz@...inx.com>,
        <lizhih@...inx.com>, <michal.simek@...inx.com>,
        <stefanos@...inx.com>, <devicetree@...r.kernel.org>
Subject: [PATCH Xilinx Alveo libfdt prep 1/1] Export subset of libfdt symbols for use by other drivers.

From: Sonal Santan <sonal.santan@...inx.com>

Some drivers may want to use device tree as metadata format to discover HW
subsystems behind PCIe BAR. This is particularly useful for PCIe FPGA
devices.

Signed-off-by: Sonal Santan <sonal.santan@...inx.com>
---
 lib/fdt.c            |  6 ++++++
 lib/fdt_empty_tree.c |  3 +++
 lib/fdt_ro.c         | 11 +++++++++++
 lib/fdt_rw.c         |  6 ++++++
 4 files changed, 26 insertions(+)

diff --git a/lib/fdt.c b/lib/fdt.c
index 97f20069fc37..9747513b50e7 100644
--- a/lib/fdt.c
+++ b/lib/fdt.c
@@ -1,2 +1,8 @@
 #include <linux/libfdt_env.h>
+#include <linux/export.h>
 #include "../scripts/dtc/libfdt/fdt.c"
+
+EXPORT_SYMBOL_GPL(fdt_next_node);
+EXPORT_SYMBOL_GPL(fdt_first_subnode);
+EXPORT_SYMBOL_GPL(fdt_next_subnode);
+EXPORT_SYMBOL_GPL(fdt_subnode_offset);
diff --git a/lib/fdt_empty_tree.c b/lib/fdt_empty_tree.c
index 5d30c58150ad..3dab578c9d22 100644
--- a/lib/fdt_empty_tree.c
+++ b/lib/fdt_empty_tree.c
@@ -1,2 +1,5 @@
 #include <linux/libfdt_env.h>
+#include <linux/export.h>
 #include "../scripts/dtc/libfdt/fdt_empty_tree.c"
+
+EXPORT_SYMBOL_GPL(fdt_create_empty_tree);
diff --git a/lib/fdt_ro.c b/lib/fdt_ro.c
index f73c04ea7be4..ec96cf3d0d7a 100644
--- a/lib/fdt_ro.c
+++ b/lib/fdt_ro.c
@@ -1,2 +1,13 @@
 #include <linux/libfdt_env.h>
+#include <linux/export.h>
 #include "../scripts/dtc/libfdt/fdt_ro.c"
+
+EXPORT_SYMBOL_GPL(fdt_getprop_by_offset);
+EXPORT_SYMBOL_GPL(fdt_node_check_compatible);
+EXPORT_SYMBOL_GPL(fdt_get_name);
+EXPORT_SYMBOL_GPL(fdt_next_property_offset);
+EXPORT_SYMBOL_GPL(fdt_getprop);
+EXPORT_SYMBOL_GPL(fdt_node_offset_by_compatible);
+EXPORT_SYMBOL_GPL(fdt_parent_offset);
+EXPORT_SYMBOL_GPL(fdt_stringlist_get);
+EXPORT_SYMBOL_GPL(fdt_first_property_offset);
diff --git a/lib/fdt_rw.c b/lib/fdt_rw.c
index 0c1f0f4a4b13..ec3939ed3d7d 100644
--- a/lib/fdt_rw.c
+++ b/lib/fdt_rw.c
@@ -1,2 +1,8 @@
 #include <linux/libfdt_env.h>
+#include <linux/export.h>
 #include "../scripts/dtc/libfdt/fdt_rw.c"
+
+EXPORT_SYMBOL_GPL(fdt_del_node);
+EXPORT_SYMBOL_GPL(fdt_add_subnode);
+EXPORT_SYMBOL_GPL(fdt_pack);
+EXPORT_SYMBOL_GPL(fdt_setprop);
-- 
2.17.1