Merge branch 'for-davem' of git://git.kernel.org/pub/scm/linux/kernel/git/bwh/sfc...

[~andy/linux] / drivers / input / mouse / sentelic.c

diff --git a/drivers/input/mouse/sentelic.c b/drivers/input/mouse/sentelic.c
index 3f5649f190824408a25c495bdfd4da88b8febe9a..a261d857691957a98e732124f6370c6f8280451a 100644 (file)
--- a/drivers/input/mouse/sentelic.c
+++ b/drivers/input/mouse/sentelic.c
@@ -721,6 +721,17 @@ static psmouse_ret_t fsp_process_byte(struct psmouse *psmouse)
 
        switch (psmouse->packet[0] >> FSP_PKT_TYPE_SHIFT) {
        case FSP_PKT_TYPE_ABS:
+
+               if ((packet[0] == 0x48 || packet[0] == 0x49) &&
+                   packet[1] == 0 && packet[2] == 0) {
+                       /*
+                        * Ignore coordinate noise when finger leaving the
+                        * surface, otherwise cursor may jump to upper-left
+                        * corner.
+                        */
+                       packet[3] &= 0xf0;
+               }
+
                abs_x = GET_ABS_X(packet);
                abs_y = GET_ABS_Y(packet);