From: Sakari Ailus <sakari.ailus@linux.intel.com>
Date: Fri, 14 Jan 2022 11:24:49 +0000 (+0200)
Subject: ACPI: properties: Consistently return -ENOENT if there are no more references
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=923339c722f9f0557cec1fd6ea1e5e05a124e3a2;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

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

commit babc92da5928f81af951663fc436997352e02d3a 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: c343bc2ce2c6 ("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>
---

diff --git a/drivers/acpi/property.c b/drivers/acpi/property.c
index da39117032df..94e1cac3997d 100644
--- a/drivers/acpi/property.c
+++ b/drivers/acpi/property.c
@@ -601,7 +601,7 @@ int __acpi_node_get_property_reference(const struct fwnode_handle *fwnode,
 	 */
 	if (obj->type == ACPI_TYPE_LOCAL_REFERENCE) {
 		if (index)
-			return -EINVAL;
+			return -ENOENT;
 
 		ret = acpi_bus_get_device(obj->reference.handle, &device);
 		if (ret)