From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id EA4E6C61CF0 for ; Thu, 13 Sep 2018 02:40:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id AA4B2214AB for ; Thu, 13 Sep 2018 02:40:56 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org AA4B2214AB Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=ZenIV.linux.org.uk Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727724AbeIMHsO (ORCPT ); Thu, 13 Sep 2018 03:48:14 -0400 Received: from zeniv.linux.org.uk ([195.92.253.2]:43622 "EHLO ZenIV.linux.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727010AbeIMHsO (ORCPT ); Thu, 13 Sep 2018 03:48:14 -0400 Received: from viro by ZenIV.linux.org.uk with local (Exim 4.87 #1 (Red Hat Linux)) id 1g0HYo-0006PT-5m; Thu, 13 Sep 2018 02:40:50 +0000 From: Al Viro To: Arnd Bergmann Cc: Greg Kroah-Hartman , linux-kernel@vger.kernel.org Subject: [PATCH 08/50] greybus/uart: switch to ->[sg]et_serial() Date: Thu, 13 Sep 2018 03:40:07 +0100 Message-Id: <20180913024049.24567-8-viro@ZenIV.linux.org.uk> X-Mailer: git-send-email 2.9.5 In-Reply-To: <20180913024049.24567-1-viro@ZenIV.linux.org.uk> References: <20180913023119.GQ19965@ZenIV.linux.org.uk> <20180913024049.24567-1-viro@ZenIV.linux.org.uk> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Al Viro Signed-off-by: Al Viro --- drivers/staging/greybus/uart.c | 47 ++++++++++++++++-------------------------- 1 file changed, 18 insertions(+), 29 deletions(-) diff --git a/drivers/staging/greybus/uart.c b/drivers/staging/greybus/uart.c index 8a006323c3c1..3313cb0b60af 100644 --- a/drivers/staging/greybus/uart.c +++ b/drivers/staging/greybus/uart.c @@ -616,40 +616,33 @@ static void gb_tty_unthrottle(struct tty_struct *tty) } } -static int get_serial_info(struct gb_tty *gb_tty, - struct serial_struct __user *info) +static int get_serial_info(struct tty_struct *tty, + struct serial_struct *ss) { - struct serial_struct tmp; - - memset(&tmp, 0, sizeof(tmp)); - tmp.type = PORT_16550A; - tmp.line = gb_tty->minor; - tmp.xmit_fifo_size = 16; - tmp.baud_base = 9600; - tmp.close_delay = gb_tty->port.close_delay / 10; - tmp.closing_wait = + struct gb_tty *gb_tty = tty->driver_data; + + ss->type = PORT_16550A; + ss->line = gb_tty->minor; + ss->xmit_fifo_size = 16; + ss->baud_base = 9600; + ss->close_delay = gb_tty->port.close_delay / 10; + ss->closing_wait = gb_tty->port.closing_wait == ASYNC_CLOSING_WAIT_NONE ? ASYNC_CLOSING_WAIT_NONE : gb_tty->port.closing_wait / 10; - - if (copy_to_user(info, &tmp, sizeof(tmp))) - return -EFAULT; return 0; } -static int set_serial_info(struct gb_tty *gb_tty, - struct serial_struct __user *newinfo) +static int set_serial_info(struct tty_struct *tty, + struct serial_struct *ss) { - struct serial_struct new_serial; + struct gb_tty *gb_tty = tty->driver_data; unsigned int closing_wait; unsigned int close_delay; int retval = 0; - if (copy_from_user(&new_serial, newinfo, sizeof(new_serial))) - return -EFAULT; - - close_delay = new_serial.close_delay * 10; - closing_wait = new_serial.closing_wait == ASYNC_CLOSING_WAIT_NONE ? - ASYNC_CLOSING_WAIT_NONE : new_serial.closing_wait * 10; + close_delay = ss->close_delay * 10; + closing_wait = ss->closing_wait == ASYNC_CLOSING_WAIT_NONE ? + ASYNC_CLOSING_WAIT_NONE : ss->closing_wait * 10; mutex_lock(&gb_tty->port.mutex); if (!capable(CAP_SYS_ADMIN)) { @@ -728,12 +721,6 @@ static int gb_tty_ioctl(struct tty_struct *tty, unsigned int cmd, struct gb_tty *gb_tty = tty->driver_data; switch (cmd) { - case TIOCGSERIAL: - return get_serial_info(gb_tty, - (struct serial_struct __user *)arg); - case TIOCSSERIAL: - return set_serial_info(gb_tty, - (struct serial_struct __user *)arg); case TIOCMIWAIT: return wait_serial_change(gb_tty, arg); } @@ -818,6 +805,8 @@ static const struct tty_operations gb_ops = { .tiocmget = gb_tty_tiocmget, .tiocmset = gb_tty_tiocmset, .get_icount = gb_tty_get_icount, + .set_serial = set_serial_info, + .get_serial = get_serial_info, }; static const struct tty_port_operations gb_port_ops = { -- 2.11.0