diff options
Diffstat (limited to 'scripts/dtc/libfdt/fdt_addresses.c')
| -rw-r--r-- | scripts/dtc/libfdt/fdt_addresses.c | 37 |
1 files changed, 19 insertions, 18 deletions
diff --git a/scripts/dtc/libfdt/fdt_addresses.c b/scripts/dtc/libfdt/fdt_addresses.c index eff4dbcc729d..f13a87dfa068 100644 --- a/scripts/dtc/libfdt/fdt_addresses.c +++ b/scripts/dtc/libfdt/fdt_addresses.c @@ -1,6 +1,7 @@ /* * libfdt - Flat Device Tree manipulation * Copyright (C) 2014 David Gibson <david@gibson.dropbear.id.au> + * Copyright (C) 2018 embedded brains GmbH * * libfdt is dual licensed: you can use it either under the terms of * the GPL, or the BSD license, at your option. @@ -55,42 +56,42 @@ #include "libfdt_internal.h" -int fdt_address_cells(const void *fdt, int nodeoffset) +static int fdt_cells(const void *fdt, int nodeoffset, const char *name) { - const fdt32_t *ac; + const fdt32_t *c; int val; int len; - ac = fdt_getprop(fdt, nodeoffset, "#address-cells", &len); - if (!ac) - return 2; + c = fdt_getprop(fdt, nodeoffset, name, &len); + if (!c) + return len; - if (len != sizeof(*ac)) + if (len != sizeof(*c)) return -FDT_ERR_BADNCELLS; - val = fdt32_to_cpu(*ac); + val = fdt32_to_cpu(*c); if ((val <= 0) || (val > FDT_MAX_NCELLS)) return -FDT_ERR_BADNCELLS; return val; } -int fdt_size_cells(const void *fdt, int nodeoffset) +int fdt_address_cells(const void *fdt, int nodeoffset) { - const fdt32_t *sc; int val; - int len; - sc = fdt_getprop(fdt, nodeoffset, "#size-cells", &len); - if (!sc) + val = fdt_cells(fdt, nodeoffset, "#address-cells"); + if (val == -FDT_ERR_NOTFOUND) return 2; + return val; +} - if (len != sizeof(*sc)) - return -FDT_ERR_BADNCELLS; - - val = fdt32_to_cpu(*sc); - if ((val < 0) || (val > FDT_MAX_NCELLS)) - return -FDT_ERR_BADNCELLS; +int fdt_size_cells(const void *fdt, int nodeoffset) +{ + int val; + val = fdt_cells(fdt, nodeoffset, "#size-cells"); + if (val == -FDT_ERR_NOTFOUND) + return 1; return val; } |