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device property: Return -ENXIO if there is no suitable FW interface

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Return -ENXIO if device property array access functions don't find
a suitable firmware interface.

This lets drivers decide if they should use available platform data
instead.

Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Jeremy Linton <jeremy.linton@arm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Guenter Roeck 2015-08-26 20:27:04 -07:00 committed by David S. Miller
parent 3b3ae88026
commit 4fa7508e9f
1 changed files with 13 additions and 4 deletions
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17
drivers/base/property.c
View file

@ -155,6 +155,7 @@ EXPORT_SYMBOL_GPL(fwnode_property_present);
* %-ENODATA if the property does not have a value, * %-ENODATA if the property does not have a value,
* %-EPROTO if the property is not an array of numbers, * %-EPROTO if the property is not an array of numbers,
* %-EOVERFLOW if the size of the property is not as expected. * %-EOVERFLOW if the size of the property is not as expected.
* %-ENXIO if no suitable firmware interface is present.
*/ */
int device_property_read_u8_array(struct device *dev, const char *propname, int device_property_read_u8_array(struct device *dev, const char *propname,
u8 *val, size_t nval) u8 *val, size_t nval)
@ -179,6 +180,7 @@ EXPORT_SYMBOL_GPL(device_property_read_u8_array);
* %-ENODATA if the property does not have a value, * %-ENODATA if the property does not have a value,
* %-EPROTO if the property is not an array of numbers, * %-EPROTO if the property is not an array of numbers,
* %-EOVERFLOW if the size of the property is not as expected. * %-EOVERFLOW if the size of the property is not as expected.
* %-ENXIO if no suitable firmware interface is present.
*/ */
int device_property_read_u16_array(struct device *dev, const char *propname, int device_property_read_u16_array(struct device *dev, const char *propname,
u16 *val, size_t nval) u16 *val, size_t nval)
@ -203,6 +205,7 @@ EXPORT_SYMBOL_GPL(device_property_read_u16_array);
* %-ENODATA if the property does not have a value, * %-ENODATA if the property does not have a value,
* %-EPROTO if the property is not an array of numbers, * %-EPROTO if the property is not an array of numbers,
* %-EOVERFLOW if the size of the property is not as expected. * %-EOVERFLOW if the size of the property is not as expected.
* %-ENXIO if no suitable firmware interface is present.
*/ */
int device_property_read_u32_array(struct device *dev, const char *propname, int device_property_read_u32_array(struct device *dev, const char *propname,
u32 *val, size_t nval) u32 *val, size_t nval)
@ -227,6 +230,7 @@ EXPORT_SYMBOL_GPL(device_property_read_u32_array);
* %-ENODATA if the property does not have a value, * %-ENODATA if the property does not have a value,
* %-EPROTO if the property is not an array of numbers, * %-EPROTO if the property is not an array of numbers,
* %-EOVERFLOW if the size of the property is not as expected. * %-EOVERFLOW if the size of the property is not as expected.
* %-ENXIO if no suitable firmware interface is present.
*/ */
int device_property_read_u64_array(struct device *dev, const char *propname, int device_property_read_u64_array(struct device *dev, const char *propname,
u64 *val, size_t nval) u64 *val, size_t nval)
@ -251,6 +255,7 @@ EXPORT_SYMBOL_GPL(device_property_read_u64_array);
* %-ENODATA if the property does not have a value, * %-ENODATA if the property does not have a value,
* %-EPROTO or %-EILSEQ if the property is not an array of strings, * %-EPROTO or %-EILSEQ if the property is not an array of strings,
* %-EOVERFLOW if the size of the property is not as expected. * %-EOVERFLOW if the size of the property is not as expected.
* %-ENXIO if no suitable firmware interface is present.
*/ */
int device_property_read_string_array(struct device *dev, const char *propname, int device_property_read_string_array(struct device *dev, const char *propname,
const char **val, size_t nval) const char **val, size_t nval)
@ -272,6 +277,7 @@ EXPORT_SYMBOL_GPL(device_property_read_string_array);
* %-EINVAL if given arguments are not valid, * %-EINVAL if given arguments are not valid,
* %-ENODATA if the property does not have a value, * %-ENODATA if the property does not have a value,
* %-EPROTO or %-EILSEQ if the property type is not a string. * %-EPROTO or %-EILSEQ if the property type is not a string.
* %-ENXIO if no suitable firmware interface is present.
*/ */
int device_property_read_string(struct device *dev, const char *propname, int device_property_read_string(struct device *dev, const char *propname,
const char **val) const char **val)
@ -293,9 +299,11 @@ EXPORT_SYMBOL_GPL(device_property_read_string);
else if (is_acpi_node(_fwnode_)) \ else if (is_acpi_node(_fwnode_)) \
_ret_ = acpi_dev_prop_read(to_acpi_node(_fwnode_), _propname_, \ _ret_ = acpi_dev_prop_read(to_acpi_node(_fwnode_), _propname_, \
_proptype_, _val_, _nval_); \ _proptype_, _val_, _nval_); \
else \ else if (is_pset(_fwnode_)) \
_ret_ = pset_prop_read_array(to_pset(_fwnode_), _propname_, \ _ret_ = pset_prop_read_array(to_pset(_fwnode_), _propname_, \
_proptype_, _val_, _nval_); \ _proptype_, _val_, _nval_); \
else \
_ret_ = -ENXIO; \
_ret_; \ _ret_; \
}) })
@ -433,9 +441,10 @@ int fwnode_property_read_string_array(struct fwnode_handle *fwnode,
else if (is_acpi_node(fwnode)) else if (is_acpi_node(fwnode))
return acpi_dev_prop_read(to_acpi_node(fwnode), propname, return acpi_dev_prop_read(to_acpi_node(fwnode), propname,
DEV_PROP_STRING, val, nval); DEV_PROP_STRING, val, nval);
else if (is_pset(fwnode))
return pset_prop_read_array(to_pset(fwnode), propname, return pset_prop_read_array(to_pset(fwnode), propname,
DEV_PROP_STRING, val, nval); DEV_PROP_STRING, val, nval);
return -ENXIO;
} }
EXPORT_SYMBOL_GPL(fwnode_property_read_string_array); EXPORT_SYMBOL_GPL(fwnode_property_read_string_array);