From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2F3006D14 for ; Wed, 7 Apr 2021 10:23:53 +0000 (UTC) Received: by mail.kernel.org (Postfix) with ESMTPSA id 8E294613CE; Wed, 7 Apr 2021 10:23:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1617791030; bh=MYJodErwJtLvlMj+dEhMM1b5fX/LATb85PPnocm4wyw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=O4efwDEAhpfHDrmN60UfUPuq4iYI1mZya9IWdbrJsenM+uQHv3fllGVKxmxYQFBx3 RJhoCnF3H8vLa0JgKL9zPbP2Mxlrg1mAYnT0lbd7cnNTIgbhqhF8YUNJaQ16Jdv+Sd fSggtQeOh0p8ExZwA2u4PE+5i8ovFV26mIo7ogEXAAj8tgwc/qqvx6eO3rC1dODU/7 BjNHMw8eEh01C8kbV6gS2MIn4Zjhzr4CZXizuSUdDKrFNXMAIahFde2XWdWN4Q2SMl /imWhiRhQL2GJknhnG+EYpYyJlXKGrknNAFl7JXatHjJKM/pt9aQooP5R32DAKswkg aCzNFhs9/pFWA== Received: from johan by xi.lan with local (Exim 4.93.0.4) (envelope-from ) id 1lU5Lb-0008RQ-BN; Wed, 07 Apr 2021 12:23:43 +0200 From: Johan Hovold To: Greg Kroah-Hartman Cc: Jiri Slaby , linux-staging@lists.linux.dev, greybus-dev@lists.linaro.org, linux-kernel@vger.kernel.org, Johan Hovold Subject: [PATCH 09/16] tty: amiserial: add missing TIOCSSERIAL jiffies conversions Date: Wed, 7 Apr 2021 12:23:27 +0200 Message-Id: <20210407102334.32361-10-johan@kernel.org> X-Mailer: git-send-email 2.26.3 In-Reply-To: <20210407102334.32361-1-johan@kernel.org> References: <20210407102334.32361-1-johan@kernel.org> X-Mailing-List: linux-staging@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit The tty-port close_delay and closing_wait parameters set by TIOCSSERIAL are specified in jiffies, while the values returned by TIOCGSERIAL are specified in centiseconds. Add the missing conversions so that TIOCSSERIAL works as expected also if this code is ever reused on a system where HZ is not 100. Signed-off-by: Johan Hovold --- drivers/tty/amiserial.c | 26 +++++++++++++++++++------- 1 file changed, 19 insertions(+), 7 deletions(-) diff --git a/drivers/tty/amiserial.c b/drivers/tty/amiserial.c index ec6802ba2bf8..ca48ce5a0862 100644 --- a/drivers/tty/amiserial.c +++ b/drivers/tty/amiserial.c @@ -937,15 +937,21 @@ static void rs_unthrottle(struct tty_struct * tty) static int get_serial_info(struct tty_struct *tty, struct serial_struct *ss) { struct serial_state *state = tty->driver_data; + unsigned int close_delay, closing_wait; tty_lock(tty); + close_delay = jiffies_to_msecs(state->tport.close_delay) / 10; + closing_wait = state->tport.closing_wait; + if (closing_wait != ASYNC_CLOSING_WAIT_NONE) + closing_wait = jiffies_to_msecs(closing_wait) / 10; + 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->close_delay = close_delay; + ss->closing_wait = closing_wait; ss->custom_divisor = state->custom_divisor; tty_unlock(tty); return 0; @@ -957,6 +963,7 @@ static int set_serial_info(struct tty_struct *tty, struct serial_struct *ss) struct tty_port *port = &state->tport; bool change_spd; int retval = 0; + unsigned int close_delay, closing_wait; tty_lock(tty); change_spd = ((ss->flags ^ port->flags) & ASYNC_SPD_MASK) || @@ -966,11 +973,16 @@ static int set_serial_info(struct tty_struct *tty, struct serial_struct *ss) tty_unlock(tty); return -EINVAL; } - + + close_delay = msecs_to_jiffies(ss->close_delay * 10); + closing_wait = ss->closing_wait; + if (closing_wait != ASYNC_CLOSING_WAIT_NONE) + closing_wait = msecs_to_jiffies(closing_wait * 10); + if (!serial_isroot()) { if ((ss->baud_base != state->baud_base) || - (ss->close_delay != port->close_delay) || - (ss->closing_wait != port->closing_wait) || + (close_delay != port->close_delay) || + (closing_wait != port->closing_wait) || (ss->xmit_fifo_size != state->xmit_fifo_size) || ((ss->flags & ~ASYNC_USR_MASK) != (port->flags & ~ASYNC_USR_MASK))) { @@ -997,8 +1009,8 @@ static int set_serial_info(struct tty_struct *tty, struct serial_struct *ss) port->flags = ((port->flags & ~ASYNC_FLAGS) | (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->close_delay = close_delay; + port->closing_wait = closing_wait; check_and_exit: if (tty_port_initialized(port)) { -- 2.26.3