isdn/gigaset: bas_gigaset locking fix

Unlock cs->lock before calling error_hangup() which is marked
"cs->lock must not be held".

Signed-off-by: Tilman Schmidt <tilman@imap.cc>
CC: stable <stable@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/isdn/gigaset/bas-gigaset.c b/drivers/isdn/gigaset/bas-gigaset.c
index 707d9c94cf9e0ed475e108d9d3037402322c34cb..e143050e1b5ccb42aba74ce3ca314c706dd01043 100644 (file)
--- a/drivers/isdn/gigaset/bas-gigaset.c
+++ b/drivers/isdn/gigaset/bas-gigaset.c
@@ -1598,13 +1598,13 @@ static int gigaset_init_bchannel(struct bc_state *bcs)
 
        ret = starturbs(bcs);
        if (ret < 0) {
+               spin_unlock_irqrestore(&cs->lock, flags);
                dev_err(cs->dev,
                        "could not start isochronous I/O for channel B%d: %s\n",
                        bcs->channel + 1,
                        ret == -EFAULT ? "null URB" : get_usb_rcmsg(ret));
                if (ret != -ENODEV)
                        error_hangup(bcs);
-               spin_unlock_irqrestore(&cs->lock, flags);
                return ret;
        }
 
@@ -1614,11 +1614,11 @@ static int gigaset_init_bchannel(struct bc_state *bcs)
                dev_err(cs->dev, "could not open channel B%d\n",
                        bcs->channel + 1);
                stopurbs(bcs->hw.bas);
-               if (ret != -ENODEV)
-                       error_hangup(bcs);
        }
 
        spin_unlock_irqrestore(&cs->lock, flags);
+       if (ret < 0 && ret != -ENODEV)
+               error_hangup(bcs);
        return ret;
 }