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Re-delete zombie 'drivers/usb/serial/airprime.c' file
Stephen Rothwell points out that this file got deleted (on purpose) by commit640c1bce86("USB: delete airprime driver"), but then almost immediately incorrectly resurrected by commit95da310e66("usb_serial: API all change"). Delete it again. If it comes back, we'll need to drive a stake through its heart. Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Acked-by: Greg KH <greg@kroah.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Linus Torvalds
parent
e9dd54da0b
commit
6069fb2ef5
@ -1,355 +0,0 @@
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/*
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* AirPrime CDMA Wireless Serial USB driver
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*
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* Copyright (C) 2005-2006 Greg Kroah-Hartman <gregkh@suse.de>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License version
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* 2 as published by the Free Software Foundation.
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*/
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/tty.h>
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#include <linux/tty_flip.h>
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#include <linux/module.h>
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#include <linux/usb.h>
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#include <linux/usb/serial.h>
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static struct usb_device_id id_table [] = {
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{ USB_DEVICE(0x0c88, 0x17da) }, /* Kyocera Wireless KPC650/Passport */
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{ },
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};
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MODULE_DEVICE_TABLE(usb, id_table);
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#define URB_TRANSFER_BUFFER_SIZE 4096
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#define NUM_READ_URBS 4
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#define NUM_WRITE_URBS 4
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#define NUM_BULK_EPS 3
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#define MAX_BULK_EPS 6
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/* if overridden by the user, then use their value for the size of the
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* read and write urbs, and the number of endpoints */
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static int buffer_size = URB_TRANSFER_BUFFER_SIZE;
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static int endpoints = NUM_BULK_EPS;
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static int debug;
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struct airprime_private {
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spinlock_t lock;
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int outstanding_urbs;
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int throttled;
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struct urb *read_urbp[NUM_READ_URBS];
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/* Settings for the port */
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int rts_state; /* Handshaking pins (outputs) */
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int dtr_state;
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int cts_state; /* Handshaking pins (inputs) */
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int dsr_state;
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int dcd_state;
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int ri_state;
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};
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static int airprime_send_setup(struct usb_serial_port *port)
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{
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struct usb_serial *serial = port->serial;
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struct airprime_private *priv;
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dbg("%s", __func__);
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if (port->number != 0)
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return 0;
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priv = usb_get_serial_port_data(port);
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if (port->port.tty) {
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int val = 0;
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if (priv->dtr_state)
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val |= 0x01;
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if (priv->rts_state)
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val |= 0x02;
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return usb_control_msg(serial->dev,
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usb_rcvctrlpipe(serial->dev, 0),
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0x22, 0x21, val, 0, NULL, 0,
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USB_CTRL_SET_TIMEOUT);
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}
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return 0;
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}
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static void airprime_read_bulk_callback(struct urb *urb)
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{
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struct usb_serial_port *port = urb->context;
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unsigned char *data = urb->transfer_buffer;
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struct tty_struct *tty;
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int result;
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int status = urb->status;
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dbg("%s - port %d", __func__, port->number);
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if (status) {
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dbg("%s - nonzero read bulk status received: %d",
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__func__, status);
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return;
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}
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usb_serial_debug_data(debug, &port->dev, __func__,
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urb->actual_length, data);
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tty = port->port.tty;
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if (tty && urb->actual_length) {
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tty_insert_flip_string(tty, data, urb->actual_length);
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tty_flip_buffer_push(tty);
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}
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result = usb_submit_urb(urb, GFP_ATOMIC);
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if (result)
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dev_err(&port->dev,
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"%s - failed resubmitting read urb, error %d\n",
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__func__, result);
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return;
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}
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static void airprime_write_bulk_callback(struct urb *urb)
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{
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struct usb_serial_port *port = urb->context;
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struct airprime_private *priv = usb_get_serial_port_data(port);
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int status = urb->status;
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unsigned long flags;
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dbg("%s - port %d", __func__, port->number);
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/* free up the transfer buffer, as usb_free_urb() does not do this */
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kfree(urb->transfer_buffer);
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if (status)
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dbg("%s - nonzero write bulk status received: %d",
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__func__, status);
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spin_lock_irqsave(&priv->lock, flags);
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--priv->outstanding_urbs;
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spin_unlock_irqrestore(&priv->lock, flags);
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usb_serial_port_softint(port);
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}
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static int airprime_open(struct tty_struct *tty, struct usb_serial_port *port,
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struct file *filp)
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{
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struct airprime_private *priv = usb_get_serial_port_data(port);
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struct usb_serial *serial = port->serial;
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struct urb *urb;
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char *buffer = NULL;
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int i;
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int result = 0;
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dbg("%s - port %d", __func__, port->number);
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/* initialize our private data structure if it isn't already created */
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if (!priv) {
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priv = kzalloc(sizeof(*priv), GFP_KERNEL);
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if (!priv) {
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result = -ENOMEM;
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goto out;
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}
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spin_lock_init(&priv->lock);
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usb_set_serial_port_data(port, priv);
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}
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/* Set some sane defaults */
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priv->rts_state = 1;
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priv->dtr_state = 1;
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for (i = 0; i < NUM_READ_URBS; ++i) {
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buffer = kmalloc(buffer_size, GFP_KERNEL);
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if (!buffer) {
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dev_err(&port->dev, "%s - out of memory.\n",
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__func__);
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result = -ENOMEM;
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goto errout;
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}
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urb = usb_alloc_urb(0, GFP_KERNEL);
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if (!urb) {
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kfree(buffer);
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dev_err(&port->dev, "%s - no more urbs?\n",
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__func__);
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result = -ENOMEM;
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goto errout;
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}
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usb_fill_bulk_urb(urb, serial->dev,
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usb_rcvbulkpipe(serial->dev,
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port->bulk_out_endpointAddress),
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buffer, buffer_size,
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airprime_read_bulk_callback, port);
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result = usb_submit_urb(urb, GFP_KERNEL);
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if (result) {
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usb_free_urb(urb);
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kfree(buffer);
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dev_err(&port->dev,
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"%s - failed submitting read urb %d for port %d, error %d\n",
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__func__, i, port->number, result);
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goto errout;
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}
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/* remember this urb so we can kill it when the
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port is closed */
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priv->read_urbp[i] = urb;
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}
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airprime_send_setup(port);
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goto out;
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errout:
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/* some error happened, cancel any submitted urbs and clean up
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anything that got allocated successfully */
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while (i-- != 0) {
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urb = priv->read_urbp[i];
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buffer = urb->transfer_buffer;
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usb_kill_urb(urb);
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usb_free_urb(urb);
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kfree(buffer);
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}
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out:
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return result;
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}
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static void airprime_close(struct tty_struct *tty,
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struct usb_serial_port *port, struct file *filp)
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{
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struct airprime_private *priv = usb_get_serial_port_data(port);
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int i;
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dbg("%s - port %d", __func__, port->number);
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priv->rts_state = 0;
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priv->dtr_state = 0;
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mutex_lock(&port->serial->disc_mutex);
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if (!port->serial->disconnected)
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airprime_send_setup(port);
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mutex_unlock(&port->serial->disc_mutex);
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for (i = 0; i < NUM_READ_URBS; ++i) {
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usb_kill_urb(priv->read_urbp[i]);
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kfree(priv->read_urbp[i]->transfer_buffer);
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usb_free_urb(priv->read_urbp[i]);
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}
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/* free up private structure */
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kfree(priv);
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usb_set_serial_port_data(port, NULL);
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}
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static int airprime_write(struct tty_struct *tty, struct usb_serial_port *port,
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const unsigned char *buf, int count)
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{
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struct airprime_private *priv = usb_get_serial_port_data(port);
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struct usb_serial *serial = port->serial;
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struct urb *urb;
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unsigned char *buffer;
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unsigned long flags;
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int status;
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dbg("%s - port %d", __func__, port->number);
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spin_lock_irqsave(&priv->lock, flags);
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if (priv->outstanding_urbs > NUM_WRITE_URBS) {
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spin_unlock_irqrestore(&priv->lock, flags);
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dbg("%s - write limit hit\n", __func__);
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return 0;
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}
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spin_unlock_irqrestore(&priv->lock, flags);
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buffer = kmalloc(count, GFP_ATOMIC);
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if (!buffer) {
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dev_err(&port->dev, "out of memory\n");
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return -ENOMEM;
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}
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urb = usb_alloc_urb(0, GFP_ATOMIC);
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if (!urb) {
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dev_err(&port->dev, "no more free urbs\n");
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kfree(buffer);
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return -ENOMEM;
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}
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memcpy(buffer, buf, count);
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usb_serial_debug_data(debug, &port->dev, __func__, count, buffer);
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usb_fill_bulk_urb(urb, serial->dev,
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usb_sndbulkpipe(serial->dev,
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port->bulk_out_endpointAddress),
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buffer, count,
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airprime_write_bulk_callback, port);
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/* send it down the pipe */
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status = usb_submit_urb(urb, GFP_ATOMIC);
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if (status) {
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dev_err(&port->dev,
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"%s - usb_submit_urb(write bulk) failed with status = %d\n",
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__func__, status);
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count = status;
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kfree(buffer);
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} else {
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spin_lock_irqsave(&priv->lock, flags);
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++priv->outstanding_urbs;
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spin_unlock_irqrestore(&priv->lock, flags);
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}
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/* we are done with this urb, so let the host driver
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* really free it when it is finished with it */
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usb_free_urb(urb);
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return count;
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}
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static struct usb_driver airprime_driver = {
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.name = "airprime",
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.probe = usb_serial_probe,
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.disconnect = usb_serial_disconnect,
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.id_table = id_table,
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.no_dynamic_id = 1,
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};
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static struct usb_serial_driver airprime_device = {
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.driver = {
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.owner = THIS_MODULE,
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.name = "airprime",
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},
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.usb_driver = &airprime_driver,
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.id_table = id_table,
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.open = airprime_open,
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.close = airprime_close,
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.write = airprime_write,
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};
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static int __init airprime_init(void)
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{
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int retval;
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airprime_device.num_ports = endpoints;
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if (endpoints < 0 || endpoints >= MAX_BULK_EPS)
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airprime_device.num_ports = NUM_BULK_EPS;
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retval = usb_serial_register(&airprime_device);
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if (retval)
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return retval;
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retval = usb_register(&airprime_driver);
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if (retval)
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usb_serial_deregister(&airprime_device);
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return retval;
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}
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static void __exit airprime_exit(void)
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{
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dbg("%s", __func__);
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usb_deregister(&airprime_driver);
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usb_serial_deregister(&airprime_device);
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}
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module_init(airprime_init);
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module_exit(airprime_exit);
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MODULE_LICENSE("GPL");
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module_param(debug, bool, S_IRUGO | S_IWUSR);
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MODULE_PARM_DESC(debug, "Debug enabled");
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module_param(buffer_size, int, 0);
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MODULE_PARM_DESC(buffer_size,
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"Size of the transfer buffers in bytes (default 4096)");
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module_param(endpoints, int, 0);
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MODULE_PARM_DESC(endpoints, "Number of bulk EPs to configure (default 3)");
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