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path: root/drivers/hid/hid-input.c
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Diffstat (limited to 'drivers/hid/hid-input.c')
-rw-r--r--drivers/hid/hid-input.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c
index 82130cf724e4..9aeca6023617 100644
--- a/drivers/hid/hid-input.c
+++ b/drivers/hid/hid-input.c
@@ -1042,7 +1042,11 @@ void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct
/*
* Ignore out-of-range values as per HID specification,
- * section 5.10 and 6.2.25
+ * section 5.10 and 6.2.25.
+ *
+ * The logical_minimum < logical_maximum check is done so that we
+ * don't unintentionally discard values sent by devices which
+ * don't specify logical min and max.
*/
if ((field->flags & HID_MAIN_ITEM_VARIABLE) &&
(field->logical_minimum < field->logical_maximum) &&