target/linux/omap24xx/patches-2.6.38/506-cbus-retu-irq-handler-locking.patch

   1 Index: linux-2.6.38-rc6/drivers/cbus/retu.c
   2 ===================================================================
   3 --- linux-2.6.38-rc6.orig/drivers/cbus/retu.c   2011-02-28 15:21:10.645505891 +0100
   4 +++ linux-2.6.38-rc6/drivers/cbus/retu.c        2011-02-28 15:22:24.030477769 +0100
   5 @@ -198,10 +198,12 @@ static irqreturn_t retu_irq_handler(int
   6         u16                     idr;
   7         u16                     imr;
   8
   9 +       mutex_lock(&retu->mutex);
  10         idr = __retu_read_reg(retu, RETU_REG_IDR);
  11         imr = __retu_read_reg(retu, RETU_REG_IMR);
  12 -       idr &= ~imr;
  13 +       mutex_unlock(&retu->mutex);
  14
  15 +       idr &= ~imr;
  16         if (!idr) {
  17                 dev_vdbg(retu->dev, "No IRQ, spurious?\n");
  18                 return IRQ_NONE;