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Subject[PATCH] [29/223] isdn/gigaset: bas_gigaset locking fix
Date
2.6.35-longterm review patch.  If anyone has any objections, please let me know.

------------------
From: Tilman Schmidt <tilman@imap.cc>

commit b33ffa5cbf52ee751bb8068218ebb3c742c5a515 upstream.

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

Signed-off-by: Tilman Schmidt <tilman@imap.cc>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Andi Kleen <ak@linux.intel.com>

---
drivers/isdn/gigaset/bas-gigaset.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)

Index: linux/drivers/isdn/gigaset/bas-gigaset.c
===================================================================
--- linux.orig/drivers/isdn/gigaset/bas-gigaset.c
+++ linux/drivers/isdn/gigaset/bas-gigaset.c
@@ -1599,13 +1599,13 @@ static int gigaset_init_bchannel(struct

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;
}

@@ -1615,11 +1615,11 @@ static int gigaset_init_bchannel(struct
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;
}


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