HID: rmi: The address of query8 must be calculated based on which query registers...

If a touchpad does not report relative data then query 6 will not be present and the address
of query 8 will be one less. This patches calculates the location of query 8 instead of
hardcoding the offset.

Signed-off-by: Andrew Duggan <aduggan@synaptics.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

diff --git a/drivers/hid/hid-rmi.c b/drivers/hid/hid-rmi.c
index a994477bd25aec700a9a9a633bb506acc9ca979b..b51200fe2f33444bd93649aa5205f261f76d0cf2 100644 (file)
--- a/drivers/hid/hid-rmi.c
+++ b/drivers/hid/hid-rmi.c
@@ -632,17 +632,6 @@ static int rmi_populate_f11(struct hid_device *hdev)
        has_rel = !!(buf[0] & BIT(3));
        has_gestures = !!(buf[0] & BIT(5));
 
-       if (has_gestures) {
-               /* query 8 to find out if query 10 exists */
-               ret = rmi_read(hdev, data->f11.query_base_addr + 8, buf);
-               if (ret) {
-                       hid_err(hdev, "can not read gesture information: %d.\n",
-                               ret);
-                       return ret;
-               }
-               has_query10 = !!(buf[0] & BIT(2));
-       }
-
        /*
         * At least 4 queries are guaranteed to be present in F11
         * +1 for query 5 which is present since absolute events are
@@ -653,8 +642,19 @@ static int rmi_populate_f11(struct hid_device *hdev)
        if (has_rel)
                ++query_offset; /* query 6 is present */
 
-       if (has_gestures)
+       if (has_gestures) {
+               /* query 8 to find out if query 10 exists */
+               ret = rmi_read(hdev,
+                       data->f11.query_base_addr + query_offset + 1, buf);
+               if (ret) {
+                       hid_err(hdev, "can not read gesture information: %d.\n",
+                               ret);
+                       return ret;
+               }
+               has_query10 = !!(buf[0] & BIT(2));
+
                query_offset += 2; /* query 7 and 8 are present */
+       }
 
        if (has_query9)
                ++query_offset;