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Date: Wed, 19 May 2021 11:20:06 +0200
From: Johan Hovold <johan@...nel.org>
To: Johan Hovold <johan@...nel.org>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Jiri Slaby <jirislaby@...nel.org>, linux-usb@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: [PATCH 6/6] USB: serial: drop irq-flags initialisations
There's no need to initialise irq-flags variables before saving the
interrupt state.
Drop the redundant initialisations from the three drivers that got this
wrong.
Signed-off-by: Johan Hovold <johan@...nel.org>
---
drivers/usb/serial/digi_acceleport.c | 13 ++++++-------
drivers/usb/serial/metro-usb.c | 12 ++++++------
drivers/usb/serial/quatech2.c | 2 +-
3 files changed, 13 insertions(+), 14 deletions(-)
diff --git a/drivers/usb/serial/digi_acceleport.c b/drivers/usb/serial/digi_acceleport.c
index 754c66ff0fc1..af65eb863d70 100644
--- a/drivers/usb/serial/digi_acceleport.c
+++ b/drivers/usb/serial/digi_acceleport.c
@@ -372,7 +372,7 @@ static int digi_write_oob_command(struct usb_serial_port *port,
int len;
struct usb_serial_port *oob_port = (struct usb_serial_port *)((struct digi_serial *)(usb_get_serial_data(port->serial)))->ds_oob_port;
struct digi_port *oob_priv = usb_get_serial_port_data(oob_port);
- unsigned long flags = 0;
+ unsigned long flags;
dev_dbg(&port->dev,
"digi_write_oob_command: TOP: port=%d, count=%d\n",
@@ -430,7 +430,7 @@ static int digi_write_inb_command(struct usb_serial_port *port,
int len;
struct digi_port *priv = usb_get_serial_port_data(port);
unsigned char *data = port->write_urb->transfer_buffer;
- unsigned long flags = 0;
+ unsigned long flags;
dev_dbg(&port->dev, "digi_write_inb_command: TOP: port=%d, count=%d\n",
priv->dp_port_num, count);
@@ -511,8 +511,7 @@ static int digi_set_modem_signals(struct usb_serial_port *port,
struct usb_serial_port *oob_port = (struct usb_serial_port *) ((struct digi_serial *)(usb_get_serial_data(port->serial)))->ds_oob_port;
struct digi_port *oob_priv = usb_get_serial_port_data(oob_port);
unsigned char *data = oob_port->write_urb->transfer_buffer;
- unsigned long flags = 0;
-
+ unsigned long flags;
dev_dbg(&port->dev,
"digi_set_modem_signals: TOP: port=%d, modem_signals=0x%x\n",
@@ -577,7 +576,7 @@ static int digi_transmit_idle(struct usb_serial_port *port,
int ret;
unsigned char buf[2];
struct digi_port *priv = usb_get_serial_port_data(port);
- unsigned long flags = 0;
+ unsigned long flags;
spin_lock_irqsave(&priv->dp_port_lock, flags);
priv->dp_transmit_idle = 0;
@@ -887,7 +886,7 @@ static int digi_write(struct tty_struct *tty, struct usb_serial_port *port,
int ret, data_len, new_len;
struct digi_port *priv = usb_get_serial_port_data(port);
unsigned char *data = port->write_urb->transfer_buffer;
- unsigned long flags = 0;
+ unsigned long flags;
dev_dbg(&port->dev, "digi_write: TOP: port=%d, count=%d\n",
priv->dp_port_num, count);
@@ -1024,8 +1023,8 @@ static unsigned int digi_write_room(struct tty_struct *tty)
{
struct usb_serial_port *port = tty->driver_data;
struct digi_port *priv = usb_get_serial_port_data(port);
+ unsigned long flags;
unsigned int room;
- unsigned long flags = 0;
spin_lock_irqsave(&priv->dp_port_lock, flags);
diff --git a/drivers/usb/serial/metro-usb.c b/drivers/usb/serial/metro-usb.c
index f9ce9e7b9b80..30ab565e0738 100644
--- a/drivers/usb/serial/metro-usb.c
+++ b/drivers/usb/serial/metro-usb.c
@@ -109,9 +109,9 @@ static void metrousb_read_int_callback(struct urb *urb)
struct usb_serial_port *port = urb->context;
struct metrousb_private *metro_priv = usb_get_serial_port_data(port);
unsigned char *data = urb->transfer_buffer;
+ unsigned long flags;
int throttled = 0;
int result = 0;
- unsigned long flags = 0;
dev_dbg(&port->dev, "%s\n", __func__);
@@ -171,7 +171,7 @@ static int metrousb_open(struct tty_struct *tty, struct usb_serial_port *port)
{
struct usb_serial *serial = port->serial;
struct metrousb_private *metro_priv = usb_get_serial_port_data(port);
- unsigned long flags = 0;
+ unsigned long flags;
int result = 0;
/* Set the private data information for the port. */
@@ -268,7 +268,7 @@ static void metrousb_throttle(struct tty_struct *tty)
{
struct usb_serial_port *port = tty->driver_data;
struct metrousb_private *metro_priv = usb_get_serial_port_data(port);
- unsigned long flags = 0;
+ unsigned long flags;
/* Set the private information for the port to stop reading data. */
spin_lock_irqsave(&metro_priv->lock, flags);
@@ -281,7 +281,7 @@ static int metrousb_tiocmget(struct tty_struct *tty)
unsigned long control_state = 0;
struct usb_serial_port *port = tty->driver_data;
struct metrousb_private *metro_priv = usb_get_serial_port_data(port);
- unsigned long flags = 0;
+ unsigned long flags;
spin_lock_irqsave(&metro_priv->lock, flags);
control_state = metro_priv->control_state;
@@ -296,7 +296,7 @@ static int metrousb_tiocmset(struct tty_struct *tty,
struct usb_serial_port *port = tty->driver_data;
struct usb_serial *serial = port->serial;
struct metrousb_private *metro_priv = usb_get_serial_port_data(port);
- unsigned long flags = 0;
+ unsigned long flags;
unsigned long control_state = 0;
dev_dbg(&port->dev, "%s - set=%d, clear=%d\n", __func__, set, clear);
@@ -323,7 +323,7 @@ static void metrousb_unthrottle(struct tty_struct *tty)
{
struct usb_serial_port *port = tty->driver_data;
struct metrousb_private *metro_priv = usb_get_serial_port_data(port);
- unsigned long flags = 0;
+ unsigned long flags;
int result = 0;
/* Set the private information for the port to resume reading data. */
diff --git a/drivers/usb/serial/quatech2.c b/drivers/usb/serial/quatech2.c
index 3b5f2032ecdb..d3377f3b5a23 100644
--- a/drivers/usb/serial/quatech2.c
+++ b/drivers/usb/serial/quatech2.c
@@ -874,7 +874,7 @@ static unsigned int qt2_write_room(struct tty_struct *tty)
{
struct usb_serial_port *port = tty->driver_data;
struct qt2_port_private *port_priv;
- unsigned long flags = 0;
+ unsigned long flags;
unsigned int r;
port_priv = usb_get_serial_port_data(port);
--
2.26.3
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