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| author | Daniel Drake <dsd@laptop.org> | 2010-11-15 01:28:54 -0800 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2010-11-15 01:33:47 -0800 |
| commit | 67f56bb0f4997b55291c162077e02e4f29639fc2 (patch) | |
| tree | b12990c21c48da67a642410888c5e823e2b2f172 | |
| parent | 87abb6bbdbcfbced2ce0bcad68dd89ac3ff9464b (diff) | |
| download | linux-67f56bb0f4997b55291c162077e02e4f29639fc2.tar.gz linux-67f56bb0f4997b55291c162077e02e4f29639fc2.tar.bz2 linux-67f56bb0f4997b55291c162077e02e4f29639fc2.zip | |
Input: hgpk - detect simple mode overflows
Based on work by Paul Fox.
Signed-off-by: Daniel Drake <dsd@laptop.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
| -rw-r--r-- | 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 b54f074ec307..7f6cb32d177a 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"); |