[PATCH 14/45] libfdt: Add new errors for the overlay code

[Sebastian Huber]

From: Maxime Ripard <maxime.ripard at free-electrons.com>

Add a few new error codes to report the failure conditions we might
encounter in the overlay application code:
   - FDT_ERR_BADOVERLAY, when an overlay cannot be parsed, even though its
     structure is correct
   - FDT_ERR_NOPHANDLES, when we ran out of available phandles and we
     cannot use a new phandle without either using an invalid one (-1 or
     0), or one already used.

Signed-off-by: Maxime Ripard <maxime.ripard at free-electrons.com>
Signed-off-by: David Gibson <david at gibson.dropbear.id.au>
---
 cpukit/dtc/libfdt/fdt_strerror.c |  3 +++
 cpukit/include/libfdt.h          | 11 ++++++++++-
 2 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/cpukit/dtc/libfdt/fdt_strerror.c b/cpukit/dtc/libfdt/fdt_strerror.c
index e6c3ceee8c..3cb357f604 100644
--- a/cpukit/dtc/libfdt/fdt_strerror.c
+++ b/cpukit/dtc/libfdt/fdt_strerror.c
@@ -76,6 +76,9 @@ static struct fdt_errtabent fdt_errtable[] = {
 	FDT_ERRTABENT(FDT_ERR_BADVERSION),
 	FDT_ERRTABENT(FDT_ERR_BADSTRUCTURE),
 	FDT_ERRTABENT(FDT_ERR_BADLAYOUT),
+	FDT_ERRTABENT(FDT_ERR_BADOVERLAY),
+	FDT_ERRTABENT(FDT_ERR_BADOVERLAY),
+	FDT_ERRTABENT(FDT_ERR_NOPHANDLES),
 };
 #define FDT_ERRTABSIZE	(sizeof(fdt_errtable) / sizeof(fdt_errtable[0]))
 
diff --git a/cpukit/include/libfdt.h b/cpukit/include/libfdt.h
index ecb11fc9e9..361cc6c719 100644
--- a/cpukit/include/libfdt.h
+++ b/cpukit/include/libfdt.h
@@ -126,7 +126,16 @@
 	 * value. For example: a property expected to contain a string list
 	 * is not NUL-terminated within the length of its value. */
 
-#define FDT_ERR_MAX		15
+#define FDT_ERR_BADOVERLAY	16
+	/* FDT_ERR_BADOVERLAY: The device tree overlay, while
+	 * correctly structured, cannot be applied due to some
+	 * unexpected or missing value, property or node. */
+
+#define FDT_ERR_NOPHANDLES	17
+	/* FDT_ERR_NOPHANDLES: The device tree doesn't have any
+	 * phandle available anymore without causing an overflow */
+
+#define FDT_ERR_MAX		17
 
 /**********************************************************************/
 /* Low-level functions (you probably don't need these)                */
-- 
2.13.7