linux-kernel - [PATCH 6/6] ipack: ipoctal: rename tty-driver pointer

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Date:   Fri, 17 Sep 2021 13:46:22 +0200
From:   Johan Hovold <johan@...nel.org>
To:     Samuel Iglesias Gonsalvez <siglesias@...lia.com>,
        Jens Taprogge <jens.taprogge@...rogge.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     industrypack-devel@...ts.sourceforge.net,
        linux-kernel@...r.kernel.org, Johan Hovold <johan@...nel.org>
Subject: [PATCH 6/6] ipack: ipoctal: rename tty-driver pointer

The name "tty" is typically used for pointers to struct tty_struct.

Rename the tty-driver pointer used during registration to something more
apt to improve readability.

Signed-off-by: Johan Hovold <johan@...nel.org>
---
 drivers/ipack/devices/ipoctal.c | 48 ++++++++++++++++-----------------
 1 file changed, 24 insertions(+), 24 deletions(-)

diff --git a/drivers/ipack/devices/ipoctal.c b/drivers/ipack/devices/ipoctal.c
index c709861198e5..20d2b9ec1227 100644
--- a/drivers/ipack/devices/ipoctal.c
+++ b/drivers/ipack/devices/ipoctal.c
@@ -276,7 +276,7 @@ static int ipoctal_inst_slot(struct ipoctal *ipoctal, unsigned int bus_nr,
 {
 	int res;
 	int i;
-	struct tty_driver *tty;
+	struct tty_driver *drv;
 	struct ipoctal_channel *channel;
 	struct ipack_region *region;
 	void __iomem *addr;
@@ -359,38 +359,38 @@ static int ipoctal_inst_slot(struct ipoctal *ipoctal, unsigned int bus_nr,
 	/* Register the TTY device */
 
 	/* Each IP-OCTAL channel is a TTY port */
-	tty = tty_alloc_driver(NR_CHANNELS, TTY_DRIVER_REAL_RAW |
+	drv = tty_alloc_driver(NR_CHANNELS, TTY_DRIVER_REAL_RAW |
 			TTY_DRIVER_DYNAMIC_DEV);
-	if (IS_ERR(tty))
-		return PTR_ERR(tty);
+	if (IS_ERR(drv))
+		return PTR_ERR(drv);
 
 	/* Fill struct tty_driver with ipoctal data */
-	tty->owner = THIS_MODULE;
-	tty->driver_name = KBUILD_MODNAME;
-	tty->name = kasprintf(GFP_KERNEL, KBUILD_MODNAME ".%d.%d.", bus_nr, slot);
-	if (!tty->name) {
+	drv->owner = THIS_MODULE;
+	drv->driver_name = KBUILD_MODNAME;
+	drv->name = kasprintf(GFP_KERNEL, KBUILD_MODNAME ".%d.%d.", bus_nr, slot);
+	if (!drv->name) {
 		res = -ENOMEM;
 		goto err_put_driver;
 	}
-	tty->major = 0;
-
-	tty->minor_start = 0;
-	tty->type = TTY_DRIVER_TYPE_SERIAL;
-	tty->subtype = SERIAL_TYPE_NORMAL;
-	tty->init_termios = tty_std_termios;
-	tty->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL;
-	tty->init_termios.c_ispeed = 9600;
-	tty->init_termios.c_ospeed = 9600;
-
-	tty_set_operations(tty, &ipoctal_fops);
-	res = tty_register_driver(tty);
+	drv->major = 0;
+
+	drv->minor_start = 0;
+	drv->type = TTY_DRIVER_TYPE_SERIAL;
+	drv->subtype = SERIAL_TYPE_NORMAL;
+	drv->init_termios = tty_std_termios;
+	drv->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL;
+	drv->init_termios.c_ispeed = 9600;
+	drv->init_termios.c_ospeed = 9600;
+
+	tty_set_operations(drv, &ipoctal_fops);
+	res = tty_register_driver(drv);
 	if (res) {
 		dev_err(&ipoctal->dev->dev, "Can't register tty driver.\n");
 		goto err_free_name;
 	}
 
 	/* Save struct tty_driver for use it when uninstalling the device */
-	ipoctal->tty_drv = tty;
+	ipoctal->tty_drv = drv;
 
 	for (i = 0; i < NR_CHANNELS; i++) {
 		struct device *tty_dev;
@@ -407,7 +407,7 @@ static int ipoctal_inst_slot(struct ipoctal *ipoctal, unsigned int bus_nr,
 		spin_lock_init(&channel->lock);
 		channel->pointer_read = 0;
 		channel->pointer_write = 0;
-		tty_dev = tty_port_register_device_attr(&channel->tty_port, tty,
+		tty_dev = tty_port_register_device_attr(&channel->tty_port, drv,
 							i, NULL, channel, NULL);
 		if (IS_ERR(tty_dev)) {
 			dev_err(&ipoctal->dev->dev, "Failed to register tty device.\n");
@@ -429,9 +429,9 @@ static int ipoctal_inst_slot(struct ipoctal *ipoctal, unsigned int bus_nr,
 	return 0;
 
 err_free_name:
-	kfree(tty->name);
+	kfree(drv->name);
 err_put_driver:
-	tty_driver_kref_put(tty);
+	tty_driver_kref_put(drv);
 
 	return res;
 }
-- 
2.32.0