target/linux/generic/patches-2.6.31/780-fix-race-in-snd_soc_jack_add_gpios.patch

   1 commit 5ced436d549d911ce610ea47d85f71fae5bbfce4
   2 Author: Lars-Peter Clausen <lars@metafoo.de>
   3 Date:   Fri Jul 31 18:26:48 2009 +0200
   4
   5     ASoC: jack: Fix race in snd_soc_jack_add_gpios
   6
   7     The irq can fire as soon as it has been requested, thus all fields accessed
   8     from within the irq handler must be initialized prior to requesting the irq.
   9
  10     Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
  11
  12 --- a/sound/soc/soc-jack.c
  13 +++ b/sound/soc/soc-jack.c
  14 @@ -220,6 +220,9 @@ int snd_soc_jack_add_gpios(struct snd_so
  15                 if (ret)
  16                         goto err;
  17
  18 +               INIT_WORK(&gpios[i].work, gpio_work);
  19 +               gpios[i].jack = jack;
  20 +
  21                 ret = request_irq(gpio_to_irq(gpios[i].gpio),
  22                                 gpio_handler,
  23                                 IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
  24 @@ -227,9 +230,6 @@ int snd_soc_jack_add_gpios(struct snd_so
  25                                 &gpios[i]);
  26                 if (ret)
  27                         goto err;
  28 -
  29 -               INIT_WORK(&gpios[i].work, gpio_work);
  30 -               gpios[i].jack = jack;
  31         }
  32
  33         return 0;