On Wed, Apr 04, 2012 at 02:19:16PM +0300, Dan Carpenter wrote: > We can't use "input" anymore after calling input_unregister_device(). > The call to input_free_device() is a double free. The normal way to > deal with this is to make input_register_device() the last function > called in the function. > > Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx> Acked-by: Dmitry Torokhov <dtor@xxxxxxx> > > diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c > index 9577b6f..51aba50a 100644 > --- a/drivers/acpi/video.c > +++ b/drivers/acpi/video.c > @@ -1687,10 +1687,6 @@ static int acpi_video_bus_add(struct acpi_device *device) > set_bit(KEY_BRIGHTNESS_ZERO, input->keybit); > set_bit(KEY_DISPLAY_OFF, input->keybit); > > - error = input_register_device(input); > - if (error) > - goto err_stop_video; > - > printk(KERN_INFO PREFIX "%s [%s] (multi-head: %s rom: %s post: %s)\n", > ACPI_VIDEO_DEVICE_NAME, acpi_device_bid(device), > video->flags.multihead ? "yes" : "no", > @@ -1701,12 +1697,16 @@ static int acpi_video_bus_add(struct acpi_device *device) > video->pm_nb.priority = 0; > error = register_pm_notifier(&video->pm_nb); > if (error) > - goto err_unregister_input_dev; > + goto err_stop_video; > + > + error = input_register_device(input); > + if (error) > + goto err_unregister_pm_notifier; > > return 0; > > - err_unregister_input_dev: > - input_unregister_device(input); > + err_unregister_pm_notifier: > + unregister_pm_notifier(&video->pm_nb); > err_stop_video: > acpi_video_bus_stop_devices(video); > err_free_input_dev: > -- Dmitry -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
