USB: ssu100: refine process_packet in ssu100

The status information does not appear at the start of each incoming
packet so the check for len < 4 at the start of ssu100_process_packet
is wrong.  Remove it.

Signed-off-by: Bill Pemberton <wfp5p@virginia.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 2 insertions, 6 deletions

diff --git a/drivers/usb/serial/ssu100.c b/drivers/usb/serial/ssu100.c
index 2826f013752..c7193880a2b 100644
--- a/drivers/usb/serial/ssu100.c
+++ b/drivers/usb/serial/ssu100.c
@@ -575,12 +575,8 @@ static int ssu100_process_packet(struct tty_struct *tty,
 
         dbg("%s - port %d", __func__, port->number);
 
-        if (len < 4) {
-                dbg("%s - malformed packet", __func__);
-                return 0;
-        }
-
-        if ((packet[0] == 0x1b) && (packet[1] == 0x1b) &&
+        if ((len >= 4) &&
+            (packet[0] == 0x1b) && (packet[1] == 0x1b) &&
             ((packet[2] == 0x00) || (packet[2] == 0x01))) {
                 if (packet[2] == 0x00)
                         priv->shadowLSR = packet[3] & (SERIAL_LSR_OE |