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ACPI: properties: Consistently return -ENOENT if there are no more references

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commit babc92da59 upstream.

__acpi_node_get_property_reference() is documented to return -ENOENT if
the caller requests a property reference at an index that does not exist,
not -EINVAL which it actually does.

Fix this by returning -ENOENT consistenly, independently of whether the
property value is a plain reference or a package.

Fixes: c343bc2ce2 ("ACPI: properties: Align return codes of __acpi_node_get_property_reference()")
Cc: 4.14+ <stable@vger.kernel.org> # 4.14+
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Sakari Ailus 2022-01-14 13:24:49 +02:00 committed by Greg Kroah-Hartman
parent ef3a87e0c4
commit 7ad5ccc3da
1 changed files with 1 additions and 1 deletions
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2
drivers/acpi/property.c
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@ -685,7 +685,7 @@ int __acpi_node_get_property_reference(const struct fwnode_handle *fwnode,
*/ */
if (obj->type == ACPI_TYPE_LOCAL_REFERENCE) { if (obj->type == ACPI_TYPE_LOCAL_REFERENCE) {
if (index) if (index)
return -EINVAL; return -ENOENT;
ret = acpi_bus_get_device(obj->reference.handle, &device); ret = acpi_bus_get_device(obj->reference.handle, &device);
if (ret) if (ret)