1 files changed, 14 insertions, 6 deletions

diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index 3e5a2768c3b4..99f97ac64aa4 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -949,9 +949,17 @@ int acpi_match_device_ids(struct acpi_device *device,
 }
 EXPORT_SYMBOL(acpi_match_device_ids);
 
-/* Performs match against special "PRP0001" shoehorn ACPI ID */
-static bool acpi_of_driver_match_device(struct device *dev,
-                                        const struct device_driver *drv)
+/**
+ * acpi_of_match_device - Match device using the "compatible" property.
+ * @dev: Device to match.
+ * @of_match_table: List of device IDs to match against.
+ *
+ * If @dev has an ACPI companion which has the special PRP0001 device ID in its
+ * list of identifiers and a _DSD object with the "compatible" property, use
+ * that property to match against the given list of identifiers.
+ */
+static bool acpi_of_match_device(struct device *dev,
+                                 const struct of_device_id *of_match_table)
 {
         const union acpi_object *of_compatible, *obj;
         struct acpi_device *adev;
@@ -962,7 +970,7 @@ static bool acpi_of_driver_match_device(struct device *dev,
                 return false;
 
         of_compatible = adev->data.of_compatible;
-        if (!drv->of_match_table || !of_compatible)
+        if (!of_match_table || !of_compatible)
                 return false;
 
         if (of_compatible->type == ACPI_TYPE_PACKAGE) {
@@ -976,7 +984,7 @@ static bool acpi_of_driver_match_device(struct device *dev,
         for (i = 0; i < nval; i++, obj++) {
                 const struct of_device_id *id;
 
-                for (id = drv->of_match_table; id->compatible[0]; id++)
+                for (id = of_match_table; id->compatible[0]; id++)
                         if (!strcasecmp(obj->string.pointer, id->compatible))
                                 return true;
         }
@@ -988,7 +996,7 @@ bool acpi_driver_match_device(struct device *dev,
                               const struct device_driver *drv)
 {
         if (!drv->acpi_match_table)
-                return acpi_of_driver_match_device(dev, drv);
+                return acpi_of_match_device(dev, drv->of_match_table);
 
         return !!acpi_match_device(drv->acpi_match_table, dev);
 }