USB: ssu100: refine process_packet in ssu100

[net-next-2.6.git] / drivers / usb / serial / ssu100.c

diff --git a/drivers/usb/serial/ssu100.c b/drivers/usb/serial/ssu100.c
index 2826f013752d99d9e34054f7e2510825c849cab6..c7193880a2b696c8123630d0fa5be9615c685ea7 100644 (file)
--- 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 |