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ACPI: properties: Fix __acpi_node_get_property_reference() return codes 

Fix more return codes for device property: Align return codes of
__acpi_node_get_property_reference().

In particular, what was missed previously:

 -EPROTO could be returned in certain cases, now -EINVAL;
 -EINVAL was returned if the property was not found, now -ENOENT;
 -EINVAL was returned also if the index was higher than the number of
         entries in a package, now -ENOENT.

Reported-by: Hyungwoo Yang <hyungwoo.yang@intel.com>
Fixes: 3e3119d308 (device property: Introduce fwnode_property_get_reference_args)
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Tested-by: Hyungwoo Yang <hyungwoo.yang@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Sakari Ailus 2017-10-11 11:06:13 +03:00 committed by Rafael J. Wysocki
parent c343bc2ce2
commit 51858a2777
1 changed files with 6 additions and 4 deletions
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10
drivers/acpi/property.c
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@ -593,7 +593,7 @@ int __acpi_node_get_property_reference(const struct fwnode_handle *fwnode,
ret = acpi_data_get_property(data, propname, ACPI_TYPE_ANY, &obj);
if (ret)
return ret;
return ret == -EINVAL ? -ENOENT : -EINVAL;
/*
* The simplest case is when the value is a single reference. Just
@ -605,7 +605,7 @@ int __acpi_node_get_property_reference(const struct fwnode_handle *fwnode,
ret = acpi_bus_get_device(obj->reference.handle, &device);
if (ret)
return ret;
return ret == -ENODEV ? -EINVAL : ret;
args->adev = device;
args->nargs = 0;
@ -621,8 +621,10 @@ int __acpi_node_get_property_reference(const struct fwnode_handle *fwnode,
* The index argument is then used to determine which reference
* the caller wants (along with the arguments).
*/
if (obj->type != ACPI_TYPE_PACKAGE || index >= obj->package.count)
return -EPROTO;
if (obj->type != ACPI_TYPE_PACKAGE)
return -EINVAL;
if (index >= obj->package.count)
return -ENOENT;
element = obj->package.elements;
end = element + obj->package.count;