Merge "usb: u_data_bridge: Lower DTR on USB cable disconnect to modem" (bcfe6046) · Commits · e / devices / android_kernel_xiaomi_markw

drivers/usb/gadget/function/u_data_bridge.c

+6 −2

Original line number	Diff line number	Diff line
		@@ -362,7 +362,7 @@ int gbridge_port_open(struct inode inode, struct file file)
		ret = wait_event_interruptible(port->open_wq,
		port->is_connected);
		if (ret) {
		pr_err("open interrupted.\n");
		pr_debug("open interrupted.\n");
		return ret;
		}

		@@ -521,7 +521,7 @@ ssize_t gbridge_port_write(struct file *file,
		if (list_empty(&port->write_pool)) {
		spin_unlock_irqrestore(&port->port_lock, flags);
		pr_debug("%s: Request list is empty.\n", __func__);
		return -EAGAIN;
		return 0;
		}
		pool = &port->write_pool;
		req = list_first_entry(pool, struct usb_request, list);
		@@ -912,6 +912,10 @@ void gbridge_disconnect(void *gptr, u8 portno)
		gser = gptr;

		gbridge_stop_io(port);

		/* lower DTR to modem */
		gbridge_notify_modem(gser, portno, 0);

		spin_lock_irqsave(&port->port_lock, flags);
		port->is_connected = false;
		port->port_usb = NULL;