diff options
Diffstat (limited to 'drivers/of')
| -rw-r--r-- | drivers/of/base.c | 19 |
1 files changed, 13 insertions, 6 deletions
diff --git a/drivers/of/base.c b/drivers/of/base.c index 57ec27bed44f..02ed36719def 100644 --- a/drivers/of/base.c +++ b/drivers/of/base.c @@ -596,32 +596,39 @@ struct device_node *of_find_node_by_phandle(phandle handle) EXPORT_SYMBOL(of_find_node_by_phandle); /** - * of_property_read_u32 - Find and read a 32 bit integer from a property + * of_property_read_u32_array - Find and read an array of 32 bit integers + * from a property. + * * @np: device node from which the property value is to be read. * @propname: name of the property to be searched. * @out_value: pointer to return value, modified only if return value is 0. * - * Search for a property in a device node and read a 32-bit value from + * Search for a property in a device node and read 32-bit value(s) from * it. Returns 0 on success, -EINVAL if the property does not exist, * -ENODATA if property does not have a value, and -EOVERFLOW if the * property data isn't large enough. * * The out_value is modified only if a valid u32 value can be decoded. */ -int of_property_read_u32(struct device_node *np, char *propname, u32 *out_value) +int of_property_read_u32_array(const struct device_node *np, char *propname, + u32 *out_values, size_t sz) { struct property *prop = of_find_property(np, propname, NULL); + const __be32 *val; if (!prop) return -EINVAL; if (!prop->value) return -ENODATA; - if (sizeof(*out_value) > prop->length) + if ((sz * sizeof(*out_values)) > prop->length) return -EOVERFLOW; - *out_value = be32_to_cpup(prop->value); + + val = prop->value; + while (sz--) + *out_values++ = be32_to_cpup(val++); return 0; } -EXPORT_SYMBOL_GPL(of_property_read_u32); +EXPORT_SYMBOL_GPL(of_property_read_u32_array); /** * of_property_read_string - Find and read a string from a property |