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From: Johan Hovold <johan@kernel.org>
To: Johan Hovold <johan@kernel.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH 07/11] USB: serial: io_edgeport: drop redundant open sanity checks
Date: Wed, 21 Oct 2026 16:11:50 +0200	[thread overview]
Message-ID: <20261021141154.2324793-8-johan@kernel.org> (raw)
In-Reply-To: <20261021141154.2324793-1-johan@kernel.org>

The throttle(), unthrottle() and set_termios() callbacks will not be
called unless the port is open so drop the redundant sanity checks.

Signed-off-by: Johan Hovold <johan@kernel.org>
---
 drivers/usb/serial/io_edgeport.c | 15 ---------------
 1 file changed, 15 deletions(-)

diff --git a/drivers/usb/serial/io_edgeport.c b/drivers/usb/serial/io_edgeport.c
index b8e78c749f9c..cccdcfb203e1 100644
--- a/drivers/usb/serial/io_edgeport.c
+++ b/drivers/usb/serial/io_edgeport.c
@@ -1368,11 +1368,6 @@ static void edge_throttle(struct tty_struct *tty)
 	struct edgeport_port *edge_port = usb_get_serial_port_data(port);
 	int status;
 
-	if (!edge_port->open) {
-		dev_dbg(&port->dev, "%s - port not opened\n", __func__);
-		return;
-	}
-
 	/* if we are implementing XON/XOFF, send the stop character */
 	if (I_IXOFF(tty)) {
 		unsigned char stop_char = STOP_CHAR(tty);
@@ -1405,11 +1400,6 @@ static void edge_unthrottle(struct tty_struct *tty)
 	struct edgeport_port *edge_port = usb_get_serial_port_data(port);
 	int status;
 
-	if (!edge_port->open) {
-		dev_dbg(&port->dev, "%s - port not opened\n", __func__);
-		return;
-	}
-
 	/* if we are implementing XON/XOFF, send the start character */
 	if (I_IXOFF(tty)) {
 		unsigned char start_char = START_CHAR(tty);
@@ -1439,11 +1429,6 @@ static void edge_set_termios(struct tty_struct *tty,
 {
 	struct edgeport_port *edge_port = usb_get_serial_port_data(port);
 
-	if (!edge_port->open) {
-		dev_dbg(&port->dev, "%s - port not opened\n", __func__);
-		return;
-	}
-
 	/* change the port settings to the new ones specified */
 	change_port_settings(tty, edge_port, old_termios);
 }
-- 
2.55.0


  parent reply	other threads:[~2026-10-21 14:15 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-10-21 14:11 [PATCH 00/11] USB: serial: io_edgeport: fixes and sync commands Johan Hovold
2026-10-21 14:11 ` [PATCH 01/11] USB: serial: io_edgeport: fix NULL-deref on early status Johan Hovold
2026-10-21 14:11 ` [PATCH 02/11] USB: serial: io_edgeport: fix potential fifo corruption Johan Hovold
2026-10-21 14:11 ` [PATCH 03/11] USB: serial: io_edgeport: fix potential close() use-after-free Johan Hovold
2026-10-21 14:11 ` [PATCH 04/11] USB: serial: io_edgeport: fix potential NULL-deref at open Johan Hovold
2026-10-21 14:11 ` [PATCH 05/11] USB: serial: io_edgeport: serialise MCR accesses Johan Hovold
2026-10-21 14:11 ` [PATCH 06/11] USB: serial: io_edgeport: drop redundant sanity checks Johan Hovold
2026-10-21 14:11 ` Johan Hovold [this message]
2026-10-21 14:11 ` [PATCH 08/11] USB: serial: io_edgeport: move initial termios update to open() Johan Hovold
2026-10-21 14:11 ` [PATCH 09/11] USB: serial: io_edgeport: deassert DTR/RTS on close() and B0 Johan Hovold
2026-10-21 14:11 ` [PATCH 10/11] USB: serial: io_edgeport: replace atomic command allocations Johan Hovold
2026-10-21 14:11 ` [PATCH 11/11] USB: serial: io_edgeport: switch to synchronous commands Johan Hovold

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