Commit 2a9d2d97 authored by Scott Wood's avatar Scott Wood Committed by Paul Mackerras

[POWERPC] wrapper: Treat NULL as root node in devp_offset; add devp_offset_find()

Many operations, as currently used in the wrapper, assume they can
pass NULL and have it be treated as the root node.  However, libfdt-wrapper
converts NULL to -1, which is only appropriate when searching for nodes,
and will cause an error otherwise.
Signed-off-by: default avatarScott Wood <scottwood@freescale.com>
Acked-by: default avatarDavid Gibson <david@gibson.dropbear.id.au>
Signed-off-by: default avatarPaul Mackerras <paulus@samba.org>
parent 754e5f3f
...@@ -48,7 +48,8 @@ ...@@ -48,7 +48,8 @@
check_err(_offset) ? NULL : (void *)(_offset+1); \ check_err(_offset) ? NULL : (void *)(_offset+1); \
}) })
#define devp_offset(devp) (((int)(devp))-1) #define devp_offset_find(devp) (((int)(devp))-1)
#define devp_offset(devp) (devp ? ((int)(devp))-1 : 0)
static void *fdt; static void *fdt;
static void *buf; /* = NULL */ static void *buf; /* = NULL */
...@@ -127,8 +128,9 @@ static void *fdt_wrapper_find_node_by_prop_value(const void *prev, ...@@ -127,8 +128,9 @@ static void *fdt_wrapper_find_node_by_prop_value(const void *prev,
const char *val, const char *val,
int len) int len)
{ {
return offset_devp(fdt_node_offset_by_prop_value(fdt, devp_offset(prev), int offset = fdt_node_offset_by_prop_value(fdt, devp_offset_find(prev),
name, val, len)); name, val, len);
return offset_devp(offset);
} }
static char *fdt_wrapper_get_path(const void *devp, char *buf, int len) static char *fdt_wrapper_get_path(const void *devp, char *buf, int len)
......
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