On 10/16/2013 04:27 PM, Michael Bohan wrote:
Ever since the following commit, libfdt has been available for
usage in the kernel:
commit ab25383983fb8d7786696f5371e75e79c3e9a405
Author: David Daney <david.daney@xxxxxxxxxx>
Date: Thu Jul 5 18:12:38 2012 +0200
of/lib: Allow scripts/dtc/libfdt to be used from kernel code
Export these functions to modules so that they may be used
from device drivers.
Change-Id: I7f540b7cf860c4be414e32ce183be5268b2ae6af
Signed-off-by: Michael Bohan <mbohan@xxxxxxxxxxxxxx>
---
lib/fdt.c | 6 ++++++
lib/fdt_ro.c | 28 ++++++++++++++++++++++++++++
lib/fdt_rw.c | 13 +++++++++++++
lib/fdt_sw.c | 9 +++++++++
lib/fdt_wip.c | 6 ++++++
5 files changed, 62 insertions(+), 0 deletions(-)
diff --git a/lib/fdt.c b/lib/fdt.c
index 97f2006..a3fe87b 100644
--- a/lib/fdt.c
+++ b/lib/fdt.c
@@ -1,2 +1,8 @@
#include <linux/libfdt_env.h>
+#include <linux/module.h>
#include "../scripts/dtc/libfdt/fdt.c"
+
+EXPORT_SYMBOL_GPL(fdt_next_tag);
The code was all written by David Gibson, and is dual GPL/BSD licensed.
So I am not sure you should be using the GPL flavor of the export
directive.
But more than this. I don't understand why a driver would be parsing
the FDT in the first place. If there is a device tree, why hasn't it
been unflattened, and thus used via the normal device tree functions.
David Daney
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