[PATCH -next v2 1/2] device property: Return -ENXIO if there is no suitable FW interface
From: Guenter Roeck <linux@roeck-us.net>
Date: 2015-08-26 20:20:51
Also in:
lkml
Subsystem:
driver core, kobjects, debugfs and sysfs, software nodes and device properties, the rest · Maintainers:
Greg Kroah-Hartman, "Rafael J. Wysocki", Danilo Krummrich, Linus Torvalds
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 <redacted> Signed-off-by: Guenter Roeck <linux@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