/**
* input_ff_erase - erase a force-feedback effect from device
* @dev: input device to erase effect from
* @effect_id: id of the ffect to be erased
* @file: purported owner of the request
*
* This function erases a force-feedback effect from specified device.
* The effect will only be erased if it was uploaded through the same
* file handle that is requesting erase.
*/
int input_ff_erase(struct input_dev *dev, int effect_id, struct file *file)
{
struct ff_device *ff = dev->ff;
int ret;
if (!test_bit(EV_FF, dev->evbit))
return -ENOSYS;
mutex_lock(&ff->mutex);
ret = erase_effect(dev, effect_id, file);
mutex_unlock(&ff->mutex);
return ret;
}
/*
* flush_effects - erase all effects owned by a file handle
*/
static int flush_effects(struct input_dev *dev, struct file *file)
{
struct ff_device *ff = dev->ff;
int i;
pr_debug("flushing now\n");
mutex_lock(&ff->mutex);
for (i = 0; i < ff->max_effects; i++)
erase_effect(dev, i, file);
mutex_unlock(&ff->mutex);
return 0;
}
/**
* input_ff_erase - erase a force-feedback effect from device
* @dev: input device to erase effect from
* @effect_id: id of the ffect to be erased
* @file: purported owner of the request
*
* This function erases a force-feedback effect from specified device.
* The effect will only be erased if it was uploaded through the same
* file handle that is requesting erase.
*/
int input_ff_erase(struct input_dev *dev, int effect_id, struct file *file)
{
struct ff_device *ff = dev->ff;
int ret;
#if defined(__VMKLNX__)
VMK_ASSERT(vmk_PreemptionIsEnabled() == VMK_FALSE);
#endif
if (!test_bit(EV_FF, dev->evbit))
return -ENOSYS;
mutex_lock(&ff->mutex);
ret = erase_effect(dev, effect_id, file);
mutex_unlock(&ff->mutex);
return ret;
}
