From: Valtteri Heikkilä <[email protected]> [ Upstream commit 3f3752705dbd50b66b66ad7b4d54fe33d2f746ed ]
This patch fixes an issue in drivers/hid/hid-input.c where USB HID control null state flag is not checked upon rejecting inputs outside logical minimum-maximum range. The check should be made according to USB HID specification 1.11, section 6.2.2.5, p.31. The fix will resolve issues with some game controllers, such as: https://bugzilla.kernel.org/show_bug.cgi?id=68621 [[email protected]: shortened and fixed spelling in commit message] Signed-off-by: Valtteri Heikkilä <[email protected]> Signed-off-by: Tomasz Kramkowski <[email protected]> Acked-By: Benjamin Tissoires <[email protected]> Signed-off-by: Jiri Kosina <[email protected]> Signed-off-by: Sasha Levin <[email protected]> --- drivers/hid/hid-input.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c index fb9ace1cef8b..76f2527fbc60 100644 --- a/drivers/hid/hid-input.c +++ b/drivers/hid/hid-input.c @@ -1156,6 +1156,7 @@ void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct * don't specify logical min and max. */ if ((field->flags & HID_MAIN_ITEM_VARIABLE) && + (field->flags & HID_MAIN_ITEM_NULL_STATE) && (field->logical_minimum < field->logical_maximum) && (value < field->logical_minimum || value > field->logical_maximum)) { -- 2.14.1
