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| author |   Scott Wood <scottwood@freescale.com> | 2007-12-12 08:23:05 +1100 |
|---|---|---|
| committer |   Paul Mackerras <paulus@samba.org> | 2007-12-20 16:11:46 +1100 |
| commit | 2a9d2d97d370e3fe959312762c3190e6a6ae9e11 (patch) | |
| tree | 0a8fefe663f64e68b26a4a22c54b6e9fc2401194 /arch/powerpc/boot/libfdt-wrapper.c | |
| parent | [POWERPC] wrapper: Rename offset in offset_devp() (diff) | |
| download | linux-dev-2a9d2d97d370e3fe959312762c3190e6a6ae9e11.tar.xz linux-dev-2a9d2d97d370e3fe959312762c3190e6a6ae9e11.zip | |
[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: Scott Wood <scottwood@freescale.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc/boot/libfdt-wrapper.c')
| -rw-r--r-- | arch/powerpc/boot/libfdt-wrapper.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/arch/powerpc/boot/libfdt-wrapper.c b/arch/powerpc/boot/libfdt-wrapper.c index 868c5049a80b..97af36c224bd 100644 --- a/arch/powerpc/boot/libfdt-wrapper.c +++ b/arch/powerpc/boot/libfdt-wrapper.c @@ -48,7 +48,8 @@ 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 *buf; /* = NULL */ @@ -127,8 +128,9 @@ static void *fdt_wrapper_find_node_by_prop_value(const void *prev, const char *val, int len) { - return offset_devp(fdt_node_offset_by_prop_value(fdt, devp_offset(prev), - name, val, len)); + int offset = fdt_node_offset_by_prop_value(fdt, devp_offset_find(prev), + name, val, len); + return offset_devp(offset); } static char *fdt_wrapper_get_path(const void *devp, char *buf, int len) |