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drivers/char/n_gsm.c: add missing spin_unlock_irqrestore 

Add a spin_unlock_irqrestore missing on the error path.  Converting the
return to break leads to the spin_unlock_irqrestore at the end of the
function.

The semantic match that finds this problem is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@
expression E1;
@@

* spin_lock_irqsave(E1,...);
  <+... when != E1
  if (...) {
    ... when != E1
*   return ...;
  }
  ...+>
* spin_unlock_irqrestore(E1,...);
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Cc: Greg Kroah-Hartman <gregkh@suse.de>
Cc: Alan Cox <alan@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Julia Lawall 2010-08-10 18:03:12 -07:00 committed by Linus Torvalds
parent 7bb671e3d0
commit e73790a57a
1 changed files with 1 additions and 1 deletions
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2
drivers/char/n_gsm.c
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@ -919,7 +919,7 @@ static void gsm_dlci_data_sweep(struct gsm_mux *gsm)
else else
len = gsm_dlci_data_output_framed(gsm, dlci); len = gsm_dlci_data_output_framed(gsm, dlci);
if (len < 0) if (len < 0)
return; break;
/* DLCI empty - try the next */ /* DLCI empty - try the next */
if (len == 0) if (len == 0)
i++; i++;