Input: synaptics - query min dimensions for fw v8.1

[uclinux-h8/linux.git] / drivers / input / mouse / synaptics.c

diff --git a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c
index 47c5dca..87c37f7 100644 (file)
--- a/drivers/input/mouse/synaptics.c
+++ b/drivers/input/mouse/synaptics.c
@@ -368,8 +368,14 @@ static int synaptics_resolution(struct psmouse *psmouse)
                }
        }
 
-       if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 7 &&
-           SYN_CAP_MIN_DIMENSIONS(priv->ext_cap_0c)) {
+       if (SYN_CAP_MIN_DIMENSIONS(priv->ext_cap_0c) &&
+           (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 7 ||
+            /*
+             * Firmware v8.1 does not report proper number of extended
+             * capabilities, but has been proven to report correct min
+             * coordinates.
+             */
+            SYN_ID_FULL(priv->identity) == 0x801)) {
                if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_MIN_COORDS, resp)) {
                        psmouse_warn(psmouse,
                                     "device claims to have min coordinates query, but I'm not able to read it.\n");