75 	struct gpio_device *gdev;  member
214 	guard(srcu)(&lh->gdev->srcu);  in linehandle_ioctl()
216 	if (!rcu_access_pointer(lh->gdev->chip))  in linehandle_ioctl()
281 	gpio_device_put(lh->gdev);  in linehandle_free()
303 static int linehandle_create(struct gpio_device *gdev, void __user *ip)  in linehandle_create()  argument
324 	lh->gdev = gpio_device_get(gdev);  in linehandle_create()
340 		struct gpio_desc *desc = gpio_device_get_desc(gdev, offset);  in linehandle_create()
373 		dev_dbg(&gdev->dev, "registered chardev handle for line %d\n",  in linehandle_create()
390 	dev_dbg(&gdev->dev, "registered chardev handle for %d lines\n",  in linehandle_create()
501 	struct gpio_device *gdev;  member
1436 	guard(srcu)(&lr->gdev->srcu);  in linereq_ioctl()
1438 	if (!rcu_access_pointer(lr->gdev->chip))  in linereq_ioctl()
1467 	guard(srcu)(&lr->gdev->srcu);  in linereq_poll()
1469 	if (!rcu_access_pointer(lr->gdev->chip))  in linereq_poll()
1489 	guard(srcu)(&lr->gdev->srcu);  in linereq_read()
1491 	if (!rcu_access_pointer(lr->gdev->chip))  in linereq_read()
1536 		blocking_notifier_chain_unregister(&lr->gdev->device_notifier,  in linereq_free()
1547 	gpio_device_put(lr->gdev);  in linereq_free()
1563 	struct device *dev = &lr->gdev->dev;  in linereq_show_fdinfo()
1589 static int linereq_create(struct gpio_device *gdev, void __user *ip)  in linereq_create()  argument
1618 	lr->gdev = gpio_device_get(gdev);  in linereq_create()
1650 		struct gpio_desc *desc = gpio_device_get_desc(gdev, offset);  in linereq_create()
1695 		dev_dbg(&gdev->dev, "registered chardev handle for line %d\n",  in linereq_create()
1700 	ret = blocking_notifier_chain_register(&gdev->device_notifier,  in linereq_create()
1731 	dev_dbg(&gdev->dev, "registered chardev handle for %d lines\n",  in linereq_create()
1764 	struct gpio_device *gdev;  member
1785 	guard(srcu)(&le->gdev->srcu);  in lineevent_poll()
1787 	if (!rcu_access_pointer(le->gdev->chip))  in lineevent_poll()
1823 	guard(srcu)(&le->gdev->srcu);  in lineevent_read()
1825 	if (!rcu_access_pointer(le->gdev->chip))  in lineevent_read()
1881 		blocking_notifier_chain_unregister(&le->gdev->device_notifier,  in lineevent_free()
1888 	gpio_device_put(le->gdev);  in lineevent_free()
1905 	guard(srcu)(&le->gdev->srcu);  in lineevent_ioctl()
1907 	if (!rcu_access_pointer(le->gdev->chip))  in lineevent_ioctl()
2013 static int lineevent_create(struct gpio_device *gdev, void __user *ip)  in lineevent_create()  argument
2034 	desc = gpio_device_get_desc(gdev, offset);  in lineevent_create()
2060 	le->gdev = gpio_device_get(gdev);  in lineevent_create()
2105 	ret = blocking_notifier_chain_register(&gdev->device_notifier,  in lineevent_create()
2230 	scoped_guard(srcu, &desc->gdev->desc_srcu) {  in gpio_desc_to_lineinfo()
2300 	struct gpio_device *gdev;  member
2314 	struct gpio_device *gdev = cdev->gdev;  in chipinfo_get()  local
2319 	strscpy(chipinfo.name, dev_name(&gdev->dev), sizeof(chipinfo.name));  in chipinfo_get()
2320 	strscpy(chipinfo.label, gdev->label, sizeof(chipinfo.label));  in chipinfo_get()
2321 	chipinfo.lines = gdev->ngpio;  in chipinfo_get()
2353 	desc = gpio_device_get_desc(cdev->gdev, lineinfo.line_offset);  in lineinfo_get_v1()
2390 	desc = gpio_device_get_desc(cdev->gdev, lineinfo.offset);  in lineinfo_get()
2420 	if (offset >= cdev->gdev->ngpio)  in lineinfo_unwatch()
2435 	struct gpio_device *gdev = cdev->gdev;  in gpio_ioctl()  local
2438 	guard(srcu)(&gdev->srcu);  in gpio_ioctl()
2441 	if (!rcu_access_pointer(gdev->chip))  in gpio_ioctl()
2450 		return linehandle_create(gdev, ip);  in gpio_ioctl()
2452 		return lineevent_create(gdev, ip);  in gpio_ioctl()
2463 		return linereq_create(gdev, ip);  in gpio_ioctl()
2482 	struct gpio_device *gdev;  member
2500 		scoped_guard(srcu, &ctx->gdev->srcu) {  in lineinfo_changed_func()
2501 			gc = srcu_dereference(ctx->gdev->chip, &ctx->gdev->srcu);  in lineinfo_changed_func()
2515 	gpio_device_put(ctx->gdev);  in lineinfo_changed_func()
2560 	ctx->gdev = gpio_device_get(desc->gdev);  in lineinfo_changed_notify()
2564 	queue_work(ctx->gdev->line_state_wq, &ctx->work);  in lineinfo_changed_notify()
2587 	guard(srcu)(&cdev->gdev->srcu);  in lineinfo_watch_poll()
2589 	if (!rcu_access_pointer(cdev->gdev->chip))  in lineinfo_watch_poll()
2610 	guard(srcu)(&cdev->gdev->srcu);  in lineinfo_watch_read()
2612 	if (!rcu_access_pointer(cdev->gdev->chip))  in lineinfo_watch_read()
2687 	struct gpio_device *gdev = container_of(inode->i_cdev,  in gpio_chrdev_open()  local
2692 	guard(srcu)(&gdev->srcu);  in gpio_chrdev_open()
2695 	if (!rcu_access_pointer(gdev->chip))  in gpio_chrdev_open()
2702 	cdev->watched_lines = bitmap_zalloc(gdev->ngpio, GFP_KERNEL);  in gpio_chrdev_open()
2708 	cdev->gdev = gpio_device_get(gdev);  in gpio_chrdev_open()
2711 	scoped_guard(write_lock_irqsave, &gdev->line_state_lock)  in gpio_chrdev_open()
2712 		ret = raw_notifier_chain_register(&gdev->line_state_notifier,  in gpio_chrdev_open()
2719 	ret = blocking_notifier_chain_register(&gdev->device_notifier,  in gpio_chrdev_open()
2734 	blocking_notifier_chain_unregister(&gdev->device_notifier,  in gpio_chrdev_open()
2737 	scoped_guard(write_lock_irqsave, &gdev->line_state_lock)  in gpio_chrdev_open()
2738 		raw_notifier_chain_unregister(&gdev->line_state_notifier,  in gpio_chrdev_open()
2741 	gpio_device_put(gdev);  in gpio_chrdev_open()
2759 	struct gpio_device *gdev = cdev->gdev;  in gpio_chrdev_release()  local
2761 	blocking_notifier_chain_unregister(&gdev->device_notifier,  in gpio_chrdev_release()
2763 	scoped_guard(write_lock_irqsave, &gdev->line_state_lock)  in gpio_chrdev_release()
2764 		raw_notifier_chain_unregister(&gdev->line_state_notifier,  in gpio_chrdev_release()
2767 	gpio_device_put(gdev);  in gpio_chrdev_release()
2785 int gpiolib_cdev_register(struct gpio_device *gdev, dev_t devt)  in gpiolib_cdev_register()  argument
2790 	cdev_init(&gdev->chrdev, &gpio_fileops);  in gpiolib_cdev_register()
2791 	gdev->chrdev.owner = THIS_MODULE;  in gpiolib_cdev_register()
2792 	gdev->dev.devt = MKDEV(MAJOR(devt), gdev->id);  in gpiolib_cdev_register()
2794 	gdev->line_state_wq = alloc_ordered_workqueue("%s", WQ_HIGHPRI,  in gpiolib_cdev_register()
2795 						      dev_name(&gdev->dev));  in gpiolib_cdev_register()
2796 	if (!gdev->line_state_wq)  in gpiolib_cdev_register()
2799 	ret = cdev_device_add(&gdev->chrdev, &gdev->dev);  in gpiolib_cdev_register()
2801 		destroy_workqueue(gdev->line_state_wq);  in gpiolib_cdev_register()
2805 	guard(srcu)(&gdev->srcu);  in gpiolib_cdev_register()
2806 	gc = srcu_dereference(gdev->chip, &gdev->srcu);  in gpiolib_cdev_register()
2808 		cdev_device_del(&gdev->chrdev, &gdev->dev);  in gpiolib_cdev_register()
2809 		destroy_workqueue(gdev->line_state_wq);  in gpiolib_cdev_register()
2813 	gpiochip_dbg(gc, "added GPIO chardev (%d:%d)\n", MAJOR(devt), gdev->id);  in gpiolib_cdev_register()
2818 void gpiolib_cdev_unregister(struct gpio_device *gdev)  in gpiolib_cdev_unregister()  argument
2820 	destroy_workqueue(gdev->line_state_wq);  in gpiolib_cdev_unregister()
2821 	cdev_device_del(&gdev->chrdev, &gdev->dev);  in gpiolib_cdev_unregister()
2822 	blocking_notifier_call_chain(&gdev->device_notifier, 0, NULL);  in gpiolib_cdev_unregister()