[PATCH v2 1/4] input: synaptics - fix pressure values calculation on image sensors

[Gabriele Mazzotta]

The pressure values retrieved from secondary packets was incorrectly
shifted, making them lower than what they actually were.
Since this only happened with secondary packets, the values reported
when only one finger was present on the touchpad were correct.

Signed-off-by: Gabriele Mazzotta <gabriele.mzt@xxxxxxxxx>
---
 drivers/input/mouse/synaptics.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c
index f89de89..4d22ebd 100644
--- a/drivers/input/mouse/synaptics.c
+++ b/drivers/input/mouse/synaptics.c
@@ -588,7 +588,7 @@ static void synaptics_parse_agm(const unsigned char buf[],
 		agm->w = hw->w;
 		agm->x = (((buf[4] & 0x0f) << 8) | buf[1]) << 1;
 		agm->y = (((buf[4] & 0xf0) << 4) | buf[2]) << 1;
-		agm->z = ((buf[3] & 0x30) | (buf[5] & 0x0f)) << 1;
+		agm->z = ((buf[3] & 0x30) | (buf[5] & 0x0f)) << 2;
 		break;
 
 	case 2:
-- 
2.1.4

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/