Input: atmel_mxt_ts - mXT224 DMA quirk was fixed in firmware v2.0.AA

Signed-off-by: Nick Dyer <nick.dyer@itdev.co.uk>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

1 files changed, 5 insertions, 3 deletions

diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c
index 03b85711cb70..d50c6147bb76 100644
--- a/drivers/input/touchscreen/atmel_mxt_ts.c
+++ b/drivers/input/touchscreen/atmel_mxt_ts.c
@@ -1422,10 +1422,12 @@ static int mxt_get_object_table(struct mxt_data *data)
 
                 switch (object->type) {
                 case MXT_GEN_MESSAGE_T5:
-                        if (data->info.family_id == 0x80) {
+                        if (data->info.family_id == 0x80 &&
+                            data->info.version < 0x20) {
                                 /*
-                                 * On mXT224 read and discard unused CRC byte
-                                 * otherwise DMA reads are misaligned
+                                 * On mXT224 firmware versions prior to V2.0
+                                 * read and discard unused CRC byte otherwise
+                                 * DMA reads are misaligned.
                                  */
                                 data->T5_msg_size = mxt_obj_size(object);
                         } else {