struct gpio_chip *gc;
int rv, val;
- sfile = file->private_data;
- priv = sfile->private;
- desc = priv->desc;
- chip = priv->chip;
- gc = &chip->gc;
-
rv = kstrtoint_from_user(usr_buf, size, 0, &val);
if (rv)
return rv;
if (val != 0 && val != 1)
return -EINVAL;
- if (!chip->lines[priv->offset].irq_enabled)
- return size;
+ sfile = file->private_data;
+ priv = sfile->private;
+ desc = priv->desc;
+ chip = priv->chip;
+ gc = &chip->gc;
- gpiod_set_value_cansleep(desc, val);
- priv->chip->irq_ctx.irq = gc->irq_base + priv->offset;
- irq_work_queue(&priv->chip->irq_ctx.work);
+ if (chip->lines[priv->offset].irq_enabled) {
+ gpiod_set_value_cansleep(desc, val);
+ priv->chip->irq_ctx.irq = gc->irq_base + priv->offset;
+ irq_work_queue(&priv->chip->irq_ctx.work);
+ }
return size;
}