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.wyso...@intel.com>
Signed-off-by: Guenter Roeck <li...@roeck-us.net>
---
v2: Added patch
drivers/base/property.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/drivers/base/property.c b/drivers/base/property.c
index 287704d680bf..9600b824d138 100644
--- a/drivers/base/property.c
+++ b/drivers/base/property.c
@@ -69,6 +69,9 @@ static int pset_prop_read_array(struct property_set *pset,
const char *name,
struct property_entry *prop;
unsigned int item_size;
+ if (!pset)
+ return -ENXIO;
+
prop = pset_prop_get(pset, name);
if (!prop)
return -ENODATA;
@@ -156,6 +159,7 @@ EXPORT_SYMBOL_GPL(fwnode_property_present);
* %-ENODATA if the property does not have a value,
* %-EPROTO if the property is not an array of numbers,
* %-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,
u8 *val, size_t nval)
@@ -180,6 +184,7 @@ EXPORT_SYMBOL_GPL(device_property_read_u8_array);
* %-ENODATA if the property does not have a value,
* %-EPROTO if the property is not an array of numbers,
* %-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,
u16 *val, size_t nval)
@@ -204,6 +209,7 @@ EXPORT_SYMBOL_GPL(device_property_read_u16_array);
* %-ENODATA if the property does not have a value,
* %-EPROTO if the property is not an array of numbers,
* %-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,
u32 *val, size_t nval)
@@ -228,6 +234,7 @@ EXPORT_SYMBOL_GPL(device_property_read_u32_array);
* %-ENODATA if the property does not have a value,
* %-EPROTO if the property is not an array of numbers,
* %-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,
u64 *val, size_t nval)
--
2.1.4
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