From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S967250AbdAFQ2b (ORCPT ); Fri, 6 Jan 2017 11:28:31 -0500 Received: from mail-oi0-f68.google.com ([209.85.218.68]:34727 "EHLO mail-oi0-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759192AbdAFQ1F (ORCPT ); Fri, 6 Jan 2017 11:27:05 -0500 From: Rob Herring To: Greg Kroah-Hartman , Marcel Holtmann , Jiri Slaby , Sebastian Reichel , Arnd Bergmann , "Dr . H . Nikolaus Schaller" , Peter Hurley , Andy Shevchenko , Alan Cox Cc: Loic Poulain , Pavel Machek , NeilBrown , Linus Walleij , linux-bluetooth@vger.kernel.org, linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 9/9] tty_port: register tty ports with serdev bus Date: Fri, 6 Jan 2017 10:26:35 -0600 Message-Id: <20170106162635.19677-10-robh@kernel.org> X-Mailer: git-send-email 2.10.1 In-Reply-To: <20170106162635.19677-1-robh@kernel.org> References: <20170106162635.19677-1-robh@kernel.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Register a serdev controller with the serdev bus when a tty_port is registered. This creates the serdev controller and create's serdev devices for any DT child nodes of the tty_port's parent (i.e. the UART device). Signed-off-by: Rob Herring --- drivers/tty/tty_port.c | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-) diff --git a/drivers/tty/tty_port.c b/drivers/tty/tty_port.c index 232a8cbf47bc..032786e5509e 100644 --- a/drivers/tty/tty_port.c +++ b/drivers/tty/tty_port.c @@ -16,6 +16,7 @@ #include #include #include +#include static int tty_port_default_receive_buf(struct tty_port *port, const unsigned char *p, @@ -125,9 +126,17 @@ struct device *tty_port_register_device_attr(struct tty_port *port, struct device *device, void *drvdata, const struct attribute_group **attr_grp) { + struct device *ttydev; + tty_port_link_device(port, driver, index); - return tty_register_device_attr(driver, index, device, drvdata, + ttydev = tty_register_device_attr(driver, index, device, drvdata, attr_grp); + if (!ttydev) + return NULL; + + serdev_tty_port_register(port, device, driver, index); + return ttydev; + } EXPORT_SYMBOL_GPL(tty_port_register_device_attr); @@ -177,6 +186,9 @@ static void tty_port_destructor(struct kref *kref) /* check if last port ref was dropped before tty release */ if (WARN_ON(port->itty)) return; + + serdev_tty_port_unregister(port); + if (port->xmit_buf) free_page((unsigned long)port->xmit_buf); tty_port_destroy(port); -- 2.10.1