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device property: Read strings using string array reading functions

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Always read strings using of_property_read_string_array() instead of
of_property_read_string(). This allows using a single operation struct
callback for accessing strings.

Same for pset_prop_read_string_array() and pset_prop_read_string().

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Sakari Ailus 2017-03-28 15:26:22 +03:00 committed by Rafael J. Wysocki
parent b0b027cee0
commit e481747794
1 changed files with 1 additions and 44 deletions
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45
drivers/base/property.c
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@ -180,31 +180,6 @@ static int pset_prop_read_string_array(struct property_set *pset,
return array_len;
}
static int pset_prop_read_string(struct property_set *pset,
const char *propname, const char **strings)
{
const struct property_entry *prop;
const char * const *pointer;
prop = pset_prop_get(pset, propname);
if (!prop)
return -EINVAL;
if (!prop->is_string)
return -EILSEQ;
if (prop->is_array) {
pointer = prop->pointer.str;
if (!pointer)
return -ENODATA;
} else {
pointer = &prop->value.str;
if (*pointer && strnlen(*pointer, prop->length) >= prop->length)
return -EILSEQ;
}
*strings = *pointer;
return 0;
}
struct fwnode_handle *dev_fwnode(struct device *dev)
{
return IS_ENABLED(CONFIG_OF) && dev->of_node ?
@ -582,19 +557,6 @@ static int __fwnode_property_read_string_array(struct fwnode_handle *fwnode,
return -ENXIO;
}
static int __fwnode_property_read_string(struct fwnode_handle *fwnode,
const char *propname, const char **val)
{
if (is_of_node(fwnode))
return of_property_read_string(to_of_node(fwnode), propname, val);
else if (is_acpi_node(fwnode))
return acpi_node_prop_read(fwnode, propname, DEV_PROP_STRING,
val, 1);
else if (is_pset_node(fwnode))
return pset_prop_read_string(to_pset_node(fwnode), propname, val);
return -ENXIO;
}
/**
* fwnode_property_read_string_array - return string array property of a node
* @fwnode: Firmware node to get the property of
@ -646,13 +608,8 @@ EXPORT_SYMBOL_GPL(fwnode_property_read_string_array);
int fwnode_property_read_string(struct fwnode_handle *fwnode,
const char *propname, const char **val)
{
int ret;
int ret = fwnode_property_read_string_array(fwnode, propname, val, 1);
ret = __fwnode_property_read_string(fwnode, propname, val);
if (ret == -EINVAL && !IS_ERR_OR_NULL(fwnode) &&
!IS_ERR_OR_NULL(fwnode->secondary))
ret = __fwnode_property_read_string(fwnode->secondary,
propname, val);
return ret < 0 ? ret : 0;
}
EXPORT_SYMBOL_GPL(fwnode_property_read_string);