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| author | Johan Hovold <jhovold@gmail.com> | 2014-05-26 19:23:34 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-05-27 15:04:08 -0700 |
| commit | 3fff3b4343f45963c087976c772348f3051a40ee (patch) | |
| tree | 59b907832b41469c9c090989b1c18f3c05e9007f /drivers/usb | |
| parent | c14829fad88dbeda57253590695b85ba51270621 (diff) | |
| download | linux-3fff3b4343f45963c087976c772348f3051a40ee.tar.gz linux-3fff3b4343f45963c087976c772348f3051a40ee.tar.bz2 linux-3fff3b4343f45963c087976c772348f3051a40ee.zip | |
USB: serial: remove overly defensive port tests
The only way a port pointer may be NULL is if probe() failed, and in
that case neither disconnect(), resume(), or reset_resume() will be
called.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/serial/usb-serial.c | 38 |
1 files changed, 14 insertions, 24 deletions
diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c index 6d40d56378d7..02de3110fe94 100644 --- a/drivers/usb/serial/usb-serial.c +++ b/drivers/usb/serial/usb-serial.c @@ -1060,6 +1060,7 @@ static void usb_serial_disconnect(struct usb_interface *interface) struct usb_serial *serial = usb_get_intfdata(interface); struct device *dev = &interface->dev; struct usb_serial_port *port; + struct tty_struct *tty; usb_serial_console_disconnect(serial); @@ -1070,18 +1071,16 @@ static void usb_serial_disconnect(struct usb_interface *interface) for (i = 0; i < serial->num_ports; ++i) { port = serial->port[i]; - if (port) { - struct tty_struct *tty = tty_port_tty_get(&port->port); - if (tty) { - tty_vhangup(tty); - tty_kref_put(tty); - } - usb_serial_port_poison_urbs(port); - wake_up_interruptible(&port->port.delta_msr_wait); - cancel_work_sync(&port->work); - if (device_is_registered(&port->dev)) - device_del(&port->dev); + tty = tty_port_tty_get(&port->port); + if (tty) { + tty_vhangup(tty); + tty_kref_put(tty); } + usb_serial_port_poison_urbs(port); + wake_up_interruptible(&port->port.delta_msr_wait); + cancel_work_sync(&port->work); + if (device_is_registered(&port->dev)) + device_del(&port->dev); } if (serial->type->disconnect) serial->type->disconnect(serial); @@ -1094,7 +1093,6 @@ static void usb_serial_disconnect(struct usb_interface *interface) int usb_serial_suspend(struct usb_interface *intf, pm_message_t message) { struct usb_serial *serial = usb_get_intfdata(intf); - struct usb_serial_port *port; int i, r = 0; serial->suspending = 1; @@ -1112,12 +1110,8 @@ int usb_serial_suspend(struct usb_interface *intf, pm_message_t message) } } - for (i = 0; i < serial->num_ports; ++i) { - port = serial->port[i]; - if (port) - usb_serial_port_poison_urbs(port); - } - + for (i = 0; i < serial->num_ports; ++i) + usb_serial_port_poison_urbs(serial->port[i]); err_out: return r; } @@ -1125,14 +1119,10 @@ EXPORT_SYMBOL(usb_serial_suspend); static void usb_serial_unpoison_port_urbs(struct usb_serial *serial) { - struct usb_serial_port *port; int i; - for (i = 0; i < serial->num_ports; ++i) { - port = serial->port[i]; - if (port) - usb_serial_port_unpoison_urbs(port); - } + for (i = 0; i < serial->num_ports; ++i) + usb_serial_port_unpoison_urbs(serial->port[i]); } int usb_serial_resume(struct usb_interface *intf) |