ACPI: Check for any matching CID when walking namespace.

The callback function acpi_ns_get_device_callback called from
acpi_get_devices() will check CID's if the HID does not match.  This code
has a bug where it requires that all CIDs match the HID. Changed the code
so that any CID match will do.

Signed-off-by: Andrew Patterson <andrew.patterson@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>

1 files changed, 7 insertions, 3 deletions

diff --git a/drivers/acpi/namespace/nsxfeval.c b/drivers/acpi/namespace/nsxfeval.c
index f39fbc6b9237..b92133faf5b7 100644
--- a/drivers/acpi/namespace/nsxfeval.c
+++ b/drivers/acpi/namespace/nsxfeval.c
@@ -443,6 +443,7 @@ acpi_ns_get_device_callback(acpi_handle obj_handle,
         struct acpica_device_id hid;
         struct acpi_compatible_id_list *cid;
         acpi_native_uint i;
+        int found;
 
         status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
         if (ACPI_FAILURE(status)) {
@@ -496,16 +497,19 @@ acpi_ns_get_device_callback(acpi_handle obj_handle,
 
                         /* Walk the CID list */
 
+                        found = 0;
                         for (i = 0; i < cid->count; i++) {
                                 if (ACPI_STRNCMP(cid->id[i].value, info->hid,
                                                  sizeof(struct
-                                                        acpi_compatible_id)) !=
+                                                        acpi_compatible_id)) ==
                                     0) {
-                                        ACPI_FREE(cid);
-                                        return (AE_OK);
+                                        found = 1;
+                                        break;
                                 }
                         }
                         ACPI_FREE(cid);
+                        if (!found)
+                                return (AE_OK);
                 }
         }