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authorAlan Cox <alan@lxorguk.ukuu.org.uk>2008-01-21 17:18:24 -0800
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2008-01-21 19:39:41 -0800
commita5569a565f7315fe7241cf963f2cc74e53871e11 (patch)
tree489e3518f5e5f36f3a9bb0d6d8925f2a5981a0a5
parent1fc3858a6358400195c067f8726cf3c86a180d80 (diff)
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 <alan@redhat.com> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@akpm@linux-foundation.org>
-rw-r--r--drivers/usb/serial/keyspan.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/usb/serial/keyspan.c b/drivers/usb/serial/keyspan.c
index feba9679ace..7c069a02c1d 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*/