diff options
Diffstat (limited to 'scripts/dtc/libfdt')
| -rw-r--r-- | scripts/dtc/libfdt/fdt_addresses.c | 45 | ||||
| -rw-r--r-- | scripts/dtc/libfdt/libfdt.h | 4 |
2 files changed, 26 insertions, 23 deletions
diff --git a/scripts/dtc/libfdt/fdt_addresses.c b/scripts/dtc/libfdt/fdt_addresses.c index eff4dbcc72..788c143113 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 +56,44 @@ #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; - int val; + const fdt32_t *c; + uint32_t 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); - if ((val <= 0) || (val > FDT_MAX_NCELLS)) + val = fdt32_to_cpu(*c); + if (val > FDT_MAX_NCELLS) return -FDT_ERR_BADNCELLS; - return val; + return (int)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) - return 2; - if (len != sizeof(*sc)) + val = fdt_cells(fdt, nodeoffset, "#address-cells"); + if (val == 0) return -FDT_ERR_BADNCELLS; + if (val == -FDT_ERR_NOTFOUND) + return 2; + return val; +} - 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; } diff --git a/scripts/dtc/libfdt/libfdt.h b/scripts/dtc/libfdt/libfdt.h index cf86ddba88..c400f2f5d5 100644 --- a/scripts/dtc/libfdt/libfdt.h +++ b/scripts/dtc/libfdt/libfdt.h @@ -734,7 +734,7 @@ uint32_t fdt_get_phandle(const void *fdt, int nodeoffset); /** * fdt_get_alias_namelen - get alias based on substring * @fdt: pointer to the device tree blob - * @name: name of the alias th look up + * @name: name of the alias to look up * @namelen: number of characters of name to consider * * Identical to fdt_get_alias(), but only examine the first namelen @@ -1109,7 +1109,7 @@ int fdt_address_cells(const void *fdt, int nodeoffset); * * returns: * 0 <= n < FDT_MAX_NCELLS, on success - * 2, if the node has no #address-cells property + * 1, if the node has no #size-cells property * -FDT_ERR_BADNCELLS, if the node has a badly formatted or invalid * #size-cells property * -FDT_ERR_BADMAGIC, |