From: "Ilpo Järvinen" <ilpo.jarvinen@linux.intel.com>
To: linux-serial@vger.kernel.org,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Jiri Slaby <jirislaby@kernel.org>,
linux-kernel@vger.kernel.org
Cc: "Ilpo Järvinen" <ilpo.jarvinen@linux.intel.com>
Subject: [PATCH 7/8] serial: Rename hw_stopped to old_hw_stopped & improve logic
Date: Thu, 9 Mar 2023 10:09:22 +0200 [thread overview]
Message-ID: <20230309080923.11778-8-ilpo.jarvinen@linux.intel.com> (raw)
In-Reply-To: <20230309080923.11778-1-ilpo.jarvinen@linux.intel.com>
hw_stopped in uart_change_line_settings() stores old hw_stopped, thus
rename it appropriately.
Alter logic to check first if the hw_stopped was changed, and then pick
which function to call if it was because the logic is more obvious that
way.
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
---
drivers/tty/serial/serial_core.c | 11 +++++------
1 file changed, 5 insertions(+), 6 deletions(-)
diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c
index 31b69e61e71d..c494cb39394b 100644
--- a/drivers/tty/serial/serial_core.c
+++ b/drivers/tty/serial/serial_core.c
@@ -182,7 +182,7 @@ static void uart_change_line_settings(struct tty_struct *tty, struct uart_state
{
struct uart_port *uport = uart_port_check(state);
struct ktermios *termios;
- bool hw_stopped;
+ bool old_hw_stopped;
/*
* If we have no tty, termios, or the port does not exist,
@@ -209,14 +209,13 @@ static void uart_change_line_settings(struct tty_struct *tty, struct uart_state
uport->status |= UPSTAT_DCD_ENABLE;
/* reset sw-assisted CTS flow control based on (possibly) new mode */
- hw_stopped = uport->hw_stopped;
+ old_hw_stopped = uport->hw_stopped;
uport->hw_stopped = uart_softcts_mode(uport) &&
!(uport->ops->get_mctrl(uport) & TIOCM_CTS);
- if (uport->hw_stopped) {
- if (!hw_stopped)
+ if (uport->hw_stopped != old_hw_stopped) {
+ if (!old_hw_stopped)
uport->ops->stop_tx(uport);
- } else {
- if (hw_stopped)
+ else
__uart_start(tty);
}
spin_unlock_irq(&uport->lock);
--
2.30.2
next prev parent reply other threads:[~2023-03-09 8:12 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-09 8:09 [PATCH 0/8] serial: Core cleanups Ilpo Järvinen
2023-03-09 8:09 ` [PATCH 1/8] serial: Use ARRAY_SIZE() with iso7816 reserved array Ilpo Järvinen
2023-03-09 8:09 ` [PATCH 2/8] serial: Use B0 instead of implicit zero assumption Ilpo Järvinen
2023-03-09 8:09 ` [PATCH 3/8] serial: Remove extern from func prototypes in headers Ilpo Järvinen
2023-03-09 8:09 ` [PATCH 4/8] serial: Move uart_change_speed() earlier Ilpo Järvinen
2023-03-09 8:09 ` [PATCH 5/8] serial: Rename uart_change_speed() to uart_change_line_settings() Ilpo Järvinen
2023-03-09 8:09 ` [PATCH 6/8] serial: Make hw_stopped bool Ilpo Järvinen
2023-03-09 8:09 ` Ilpo Järvinen [this message]
2023-03-09 8:09 ` [PATCH 8/8] serial: Remove uart_wait_until_sent() forward declaration Ilpo Järvinen
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20230309080923.11778-8-ilpo.jarvinen@linux.intel.com \
--to=ilpo.jarvinen@linux.intel.com \
--cc=gregkh@linuxfoundation.org \
--cc=jirislaby@kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-serial@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®