[PATCH -next] usb: ftdi-elan: Fix if == else warnings in ftdi_elan_respond_engine

[YueHaibing]

./drivers/usb/misc/ftdi-elan.c:972:10-12: WARNING: possible condition with no 
effect (if == else)
./drivers/usb/misc/ftdi-elan.c:983:9-11: WARNING: possible condition with no 
effect (if == else)
./drivers/usb/misc/ftdi-elan.c:2052:11-13: WARNING: possible condition with no 
effect (if == else)

Signed-off-by: YueHaibing <yuehaib...@huawei.com>
---
 drivers/usb/misc/ftdi-elan.c | 26 --------------------------
 1 file changed, 26 deletions(-)

diff --git a/drivers/usb/misc/ftdi-elan.c b/drivers/usb/misc/ftdi-elan.c
index 76c718a..257efac 100644
--- a/drivers/usb/misc/ftdi-elan.c
+++ b/drivers/usb/misc/ftdi-elan.c
@@ -915,7 +915,6 @@ static int ftdi_elan_respond_engine(struct usb_ftdi *ftdi)
        int bytes_read = 0;
        int retry_on_empty = 1;
        int retry_on_timeout = 3;
-       int empty_packets = 0;
 read:{
                int packet_bytes = 0;
                int retval = usb_bulk_msg(ftdi->udev,
@@ -960,31 +959,6 @@ read:{
                        dev_err(&ftdi->udev->dev, "error = %d with packet_bytes 
= %d with total %d bytes%s\n",
                                retval, packet_bytes, bytes_read, diag);
                        return retval;
-               } else if (packet_bytes == 2) {
-                       unsigned char s0 = ftdi->bulk_in_buffer[0];
-                       unsigned char s1 = ftdi->bulk_in_buffer[1];
-                       empty_packets += 1;
-                       if (s0 == 0x31 && s1 == 0x60) {
-                               if (retry_on_empty-- > 0) {
-                                       goto more;
-                               } else
-                                       return 0;
-                       } else if (s0 == 0x31 && s1 == 0x00) {
-                               if (retry_on_empty-- > 0) {
-                                       goto more;
-                               } else
-                                       return 0;
-                       } else {
-                               if (retry_on_empty-- > 0) {
-                                       goto more;
-                               } else
-                                       return 0;
-                       }
-               } else if (packet_bytes == 1) {
-                       if (retry_on_empty-- > 0) {
-                               goto more;
-                       } else
-                               return 0;
                } else {
                        if (retry_on_empty-- > 0) {
                                goto more;
-- 
2.7.0