Based on work by Paul Fox.
Signed-off-by: Daniel Drake <dsd@xxxxxxxxxx>
---
drivers/input/mouse/hgpk.c | 5 +++++
1 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/drivers/input/mouse/hgpk.c b/drivers/input/mouse/hgpk.c
index b54f074..7f6cb32 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");
--
1.7.3.2
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