From: Alan Cox Date: Tue, 22 Jan 2008 01:18:24 +0000 (-0800) Subject: keyspan: fix oops X-Git-Tag: Ubuntu-5.2.0-15.16~39032 X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=a5569a565f7315fe7241cf963f2cc74e53871e11;p=mirror_ubuntu-eoan-kernel.git keyspan: fix oops 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. Signed-off-by: Alan Cox Cc: Greg KH Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- diff --git a/drivers/usb/serial/keyspan.c b/drivers/usb/serial/keyspan.c index feba9679ace8..7c069a02c1dd 100644 --- a/drivers/usb/serial/keyspan.c +++ b/drivers/usb/serial/keyspan.c @@ -447,7 +447,7 @@ static void usa26_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 errors on individual bytes, only possible overrun err*/