From 61924505ae0037527879446b36ac27c60210bc77 Mon Sep 17 00:00:00 2001
From: Johan Hovold <johan@kernel.org>
Date: Sun, 8 May 2016 20:07:59 +0200
Subject: USB: serial: keyspan: fix URB unlink
A driver must not rely on the URB status field to try to determine if an
URB is active.
Signed-off-by: Johan Hovold <johan@kernel.org>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/serial/keyspan.c | 26 ++++++++++----------------
1 file changed, 10 insertions(+), 16 deletions(-)
(limited to 'drivers/usb/serial')
diff --git a/drivers/usb/serial/keyspan.c b/drivers/usb/serial/keyspan.c
index 1cf05883f48c..86d54932843d 100644
--- a/drivers/usb/serial/keyspan.c
+++ b/drivers/usb/serial/keyspan.c
@@ -1082,12 +1082,6 @@ static int keyspan_open(struct tty_struct *tty, struct usb_serial_port *port)
return 0;
}
-static inline void stop_urb(struct urb *urb)
-{
- if (urb && urb->status == -EINPROGRESS)
- usb_kill_urb(urb);
-}
-
static void keyspan_dtr_rts(struct usb_serial_port *port, int on)
{
struct keyspan_port_private *p_priv = usb_get_serial_port_data(port);
@@ -1114,10 +1108,10 @@ static void keyspan_close(struct usb_serial_port *port)
p_priv->out_flip = 0;
p_priv->in_flip = 0;
- stop_urb(p_priv->inack_urb);
+ usb_kill_urb(p_priv->inack_urb);
for (i = 0; i < 2; i++) {
- stop_urb(p_priv->in_urbs[i]);
- stop_urb(p_priv->out_urbs[i]);
+ usb_kill_urb(p_priv->in_urbs[i]);
+ usb_kill_urb(p_priv->out_urbs[i]);
}
}
@@ -2365,9 +2359,9 @@ static void keyspan_disconnect(struct usb_serial *serial)
s_priv = usb_get_serial_data(serial);
- stop_urb(s_priv->instat_urb);
- stop_urb(s_priv->glocont_urb);
- stop_urb(s_priv->indat_urb);
+ usb_kill_urb(s_priv->instat_urb);
+ usb_kill_urb(s_priv->glocont_urb);
+ usb_kill_urb(s_priv->indat_urb);
}
static void keyspan_release(struct usb_serial *serial)
@@ -2495,11 +2489,11 @@ static int keyspan_port_remove(struct usb_serial_port *port)
p_priv = usb_get_serial_port_data(port);
- stop_urb(p_priv->inack_urb);
- stop_urb(p_priv->outcont_urb);
+ usb_kill_urb(p_priv->inack_urb);
+ usb_kill_urb(p_priv->outcont_urb);
for (i = 0; i < 2; i++) {
- stop_urb(p_priv->in_urbs[i]);
- stop_urb(p_priv->out_urbs[i]);
+ usb_kill_urb(p_priv->in_urbs[i]);
+ usb_kill_urb(p_priv->out_urbs[i]);
}
usb_free_urb(p_priv->inack_urb);
--
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