[fprint] [PATCH/ISSUE] Make upek scanner work again

[Alon Bar-Lev]

Hello,

Long time since my reader worked with libfprint.
The attached patch workaround this.

I am getting:
upekts:error [__handle_incoming_msg] non-zero bytes in cmd response fb ff

While the expected is values are 0, 0. But these are not used afterwards.

Any clue what these bytes are for?

I got the following device:
Bus 004 Device 004: ID 0483:2016 SGS Thomson Microelectronics Fingerprint Reader

Regards,
Alon Bar-Lev.

---

diff --git a/libfprint/drivers/upekts.c b/libfprint/drivers/upekts.c
index df64830..242e37a 100644
--- a/libfprint/drivers/upekts.c
+++ b/libfprint/drivers/upekts.c
@@ -322,8 +322,8 @@ static int __handle_incoming_msg(struct read_msg_data *udata,
 			return -1;
 		}
 		if (innerbuf[3] || innerbuf[4]) {
-			fp_err("non-zero bytes in cmd response");
-			return -1;
+			fp_err("non-zero bytes in cmd response %02x %02x", innerbuf[3], innerbuf[4]);
+			/*return -1;*/
 		}
 
 		innerlen = innerbuf[1] | (innerbuf[2] << 8);