From: Alan Cox <[EMAIL PROTECTED]>
If we get a data URB back from the hardware after we have put the tty to
bed we go kaboom. Fortunately all we need to do is process the URB
without trying to ram its contents down the throat of an ex-tty.
Cc: stable <[EMAIL PROTECTED]>
Signed-off-by: Alan Cox <[EMAIL PROTECTED]>
Signed-off-by: Greg Kroah-Hartman <[EMAIL PROTECTED]>
---
drivers/usb/serial/keyspan.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/usb/serial/keyspan.c b/drivers/usb/serial/keyspan.c
index 7c069a0..ea7bba6 100644
--- a/drivers/usb/serial/keyspan.c
+++ b/drivers/usb/serial/keyspan.c
@@ -838,7 +838,7 @@ static void usa49_indat_callback(struct urb *urb)
port = (struct usb_serial_port *) urb->context;
tty = port->tty;
- if (urb->actual_length) {
+ if (tty && urb->actual_length) {
/* 0x80 bit is error flag */
if ((data[0] & 0x80) == 0) {
/* no error on any byte */
--
1.5.3.8
-
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