From 67f56bb0f4997b55291c162077e02e4f29639fc2 Mon Sep 17 00:00:00 2001 From: Daniel Drake Date: Mon, 15 Nov 2010 01:28:54 -0800 Subject: [PATCH] Input: hgpk - detect simple mode overflows Based on work by Paul Fox. Signed-off-by: Daniel Drake Signed-off-by: Dmitry Torokhov --- drivers/input/mouse/hgpk.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/input/mouse/hgpk.c b/drivers/input/mouse/hgpk.c index b54f074ec30..7f6cb32d177 100644 --- a/drivers/input/mouse/hgpk.c +++ b/drivers/input/mouse/hgpk.c @@ -431,6 +431,11 @@ static void hgpk_process_simple_packet(struct psmouse *psmouse) int x = packet[1] - ((packet[0] << 4) & 0x100); int y = ((packet[0] << 3) & 0x100) - packet[2]; + if (packet[0] & 0xc0) + hgpk_dbg(psmouse, + "overflow -- 0x%02x 0x%02x 0x%02x\n", + packet[0], packet[1], packet[2]); + if (hgpk_discard_decay_hack(psmouse, x, y)) { if (tpdebug) hgpk_dbg(psmouse, "discarding\n"); -- 2.11.4.GIT