Merge remote-tracking branch 'lsk/v3.10/topic/gator' into linux-linaro-lsk

[firefly-linux-kernel-4.4.55.git] / drivers / hid / hid-core.c

diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index c4e5cdfa5d247efc0f80dfce1e1ce89c9c8da45b..81d0e6e1f754101479d95dc5c756498fe3bbc720 100644 (file)
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -796,7 +796,17 @@ struct hid_report *hid_validate_values(struct hid_device *hid,
         * ->numbered being checked, which may not always be the case when
         * drivers go to access report values.
         */
-       report = hid->report_enum[type].report_id_hash[id];
+       if (id == 0) {
+               /*
+                * Validating on id 0 means we should examine the first
+                * report in the list.
+                */
+               report = list_entry(
+                               hid->report_enum[type].report_list.next,
+                               struct hid_report, list);
+       } else {
+               report = hid->report_enum[type].report_id_hash[id];
+       }
        if (!report) {
                hid_err(hid, "missing %s %u\n", hid_report_names[type], id);
                return NULL;