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 D1B43C070C3 for ; Thu, 13 Sep 2018 02:44:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8926B2133F for ; Thu, 13 Sep 2018 02:44:46 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8926B2133F 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 S1728215AbeIMHwB (ORCPT ); Thu, 13 Sep 2018 03:52:01 -0400 Received: from zeniv.linux.org.uk ([195.92.253.2]:43594 "EHLO ZenIV.linux.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726675AbeIMHsN (ORCPT ); Thu, 13 Sep 2018 03:48:13 -0400 Received: from viro by ZenIV.linux.org.uk with local (Exim 4.87 #1 (Red Hat Linux)) id 1g0HYo-0006PZ-8K; 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 09/50] amiserial: switch to ->[sg]et_serial() Date: Thu, 13 Sep 2018 03:40:08 +0100 Message-Id: <20180913024049.24567-9-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/tty/amiserial.c | 83 ++++++++++++++++++++++--------------------------- 1 file changed, 38 insertions(+), 45 deletions(-) diff --git a/drivers/tty/amiserial.c b/drivers/tty/amiserial.c index 34dead614149..17fc8bb6c6b8 100644 --- a/drivers/tty/amiserial.c +++ b/drivers/tty/amiserial.c @@ -996,63 +996,60 @@ static void rs_unthrottle(struct tty_struct * tty) * ------------------------------------------------------------ */ -static int get_serial_info(struct tty_struct *tty, struct serial_state *state, - struct serial_struct __user * retinfo) +static int get_serial_info(struct tty_struct *tty, struct serial_struct *ss) { - struct serial_struct tmp; - - memset(&tmp, 0, sizeof(tmp)); + struct serial_state *state = tty->driver_data; + + if (serial_paranoia_check(state, tty->name, "rs_ioctl")) + return -ENODEV; + tty_lock(tty); - tmp.line = tty->index; - tmp.port = state->port; - tmp.flags = state->tport.flags; - tmp.xmit_fifo_size = state->xmit_fifo_size; - tmp.baud_base = state->baud_base; - tmp.close_delay = state->tport.close_delay; - tmp.closing_wait = state->tport.closing_wait; - tmp.custom_divisor = state->custom_divisor; + ss->line = tty->index; + ss->port = state->port; + ss->flags = state->tport.flags; + ss->xmit_fifo_size = state->xmit_fifo_size; + ss->baud_base = state->baud_base; + ss->close_delay = state->tport.close_delay; + ss->closing_wait = state->tport.closing_wait; + ss->custom_divisor = state->custom_divisor; tty_unlock(tty); - if (copy_to_user(retinfo,&tmp,sizeof(*retinfo))) - return -EFAULT; return 0; } -static int set_serial_info(struct tty_struct *tty, struct serial_state *state, - struct serial_struct __user * new_info) +static int set_serial_info(struct tty_struct *tty, struct serial_struct *ss) { + struct serial_state *state = tty->driver_data; struct tty_port *port = &state->tport; - struct serial_struct new_serial; bool change_spd; - int retval = 0; - if (copy_from_user(&new_serial,new_info,sizeof(new_serial))) - return -EFAULT; + if (serial_paranoia_check(state, tty->name, "rs_ioctl")) + return -ENODEV; tty_lock(tty); - change_spd = ((new_serial.flags ^ port->flags) & ASYNC_SPD_MASK) || - new_serial.custom_divisor != state->custom_divisor; - if (new_serial.irq || new_serial.port != state->port || - new_serial.xmit_fifo_size != state->xmit_fifo_size) { + change_spd = ((ss->flags ^ port->flags) & ASYNC_SPD_MASK) || + ss->custom_divisor != state->custom_divisor; + if (ss->irq || ss->port != state->port || + ss->xmit_fifo_size != state->xmit_fifo_size) { tty_unlock(tty); return -EINVAL; } if (!serial_isroot()) { - if ((new_serial.baud_base != state->baud_base) || - (new_serial.close_delay != port->close_delay) || - (new_serial.xmit_fifo_size != state->xmit_fifo_size) || - ((new_serial.flags & ~ASYNC_USR_MASK) != + if ((ss->baud_base != state->baud_base) || + (ss->close_delay != port->close_delay) || + (ss->xmit_fifo_size != state->xmit_fifo_size) || + ((ss->flags & ~ASYNC_USR_MASK) != (port->flags & ~ASYNC_USR_MASK))) { tty_unlock(tty); return -EPERM; } port->flags = ((port->flags & ~ASYNC_USR_MASK) | - (new_serial.flags & ASYNC_USR_MASK)); - state->custom_divisor = new_serial.custom_divisor; + (ss->flags & ASYNC_USR_MASK)); + state->custom_divisor = ss->custom_divisor; goto check_and_exit; } - if (new_serial.baud_base < 9600) { + if (ss->baud_base < 9600) { tty_unlock(tty); return -EINVAL; } @@ -1062,19 +1059,19 @@ static int set_serial_info(struct tty_struct *tty, struct serial_state *state, * At this point, we start making changes..... */ - state->baud_base = new_serial.baud_base; + state->baud_base = ss->baud_base; port->flags = ((port->flags & ~ASYNC_FLAGS) | - (new_serial.flags & ASYNC_FLAGS)); - state->custom_divisor = new_serial.custom_divisor; - port->close_delay = new_serial.close_delay * HZ/100; - port->closing_wait = new_serial.closing_wait * HZ/100; + (ss->flags & ASYNC_FLAGS)); + state->custom_divisor = ss->custom_divisor; + port->close_delay = ss->close_delay * HZ/100; + port->closing_wait = ss->closing_wait * HZ/100; port->low_latency = (port->flags & ASYNC_LOW_LATENCY) ? 1 : 0; check_and_exit: if (tty_port_initialized(port)) { if (change_spd) { /* warn about deprecation unless clearing */ - if (new_serial.flags & ASYNC_SPD_MASK) + if (ss->flags & ASYNC_SPD_MASK) dev_warn_ratelimited(tty->dev, "use of SPD flags is deprecated\n"); change_speed(tty, state, NULL); } @@ -1084,7 +1081,6 @@ static int set_serial_info(struct tty_struct *tty, struct serial_state *state, return retval; } - /* * get_lsr_info - get line status register info * @@ -1224,18 +1220,13 @@ static int rs_ioctl(struct tty_struct *tty, if (serial_paranoia_check(info, tty->name, "rs_ioctl")) return -ENODEV; - if ((cmd != TIOCGSERIAL) && (cmd != TIOCSSERIAL) && - (cmd != TIOCSERCONFIG) && (cmd != TIOCSERGSTRUCT) && + if ((cmd != TIOCSERCONFIG) && (cmd != TIOCSERGSTRUCT) && (cmd != TIOCMIWAIT) && (cmd != TIOCGICOUNT)) { if (tty_io_error(tty)) return -EIO; } switch (cmd) { - case TIOCGSERIAL: - return get_serial_info(tty, info, argp); - case TIOCSSERIAL: - return set_serial_info(tty, info, argp); case TIOCSERCONFIG: return 0; @@ -1607,6 +1598,8 @@ static const struct tty_operations serial_ops = { .tiocmget = rs_tiocmget, .tiocmset = rs_tiocmset, .get_icount = rs_get_icount, + .set_serial = set_serial_info, + .get_serial = get_serial_info, .proc_show = rs_proc_show, }; -- 2.11.0