*
*/
-#include <linux/config.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/delay.h>
#include <asm/uaccess.h>
#include <linux/usb_ch9.h>
-#include <linux/usb_cdc.h>
+#include <linux/usb/cdc.h>
#include <linux/usb_gadget.h>
#include "gadget_chips.h"
-/* Wait Cond */
-
-#define __wait_cond_interruptible(wq, condition, lock, flags, ret) \
-do { \
- wait_queue_t __wait; \
- init_waitqueue_entry(&__wait, current); \
- \
- add_wait_queue(&wq, &__wait); \
- for (;;) { \
- set_current_state(TASK_INTERRUPTIBLE); \
- if (condition) \
- break; \
- if (!signal_pending(current)) { \
- spin_unlock_irqrestore(lock, flags); \
- schedule(); \
- spin_lock_irqsave(lock, flags); \
- continue; \
- } \
- ret = -ERESTARTSYS; \
- break; \
- } \
- current->state = TASK_RUNNING; \
- remove_wait_queue(&wq, &__wait); \
-} while (0)
-
-#define wait_cond_interruptible(wq, condition, lock, flags) \
-({ \
- int __ret = 0; \
- if (!(condition)) \
- __wait_cond_interruptible(wq, condition, lock, flags, \
- __ret); \
- __ret; \
-})
-
-#define __wait_cond_interruptible_timeout(wq, condition, lock, flags, \
- timeout, ret) \
-do { \
- signed long __timeout = timeout; \
- wait_queue_t __wait; \
- init_waitqueue_entry(&__wait, current); \
- \
- add_wait_queue(&wq, &__wait); \
- for (;;) { \
- set_current_state(TASK_INTERRUPTIBLE); \
- if (__timeout == 0) \
- break; \
- if (condition) \
- break; \
- if (!signal_pending(current)) { \
- spin_unlock_irqrestore(lock, flags); \
- __timeout = schedule_timeout(__timeout); \
- spin_lock_irqsave(lock, flags); \
- continue; \
- } \
- ret = -ERESTARTSYS; \
- break; \
- } \
- current->state = TASK_RUNNING; \
- remove_wait_queue(&wq, &__wait); \
-} while (0)
-
-#define wait_cond_interruptible_timeout(wq, condition, lock, flags, \
- timeout) \
-({ \
- int __ret = 0; \
- if (!(condition)) \
- __wait_cond_interruptible_timeout(wq, condition, lock, \
- flags, timeout, __ret); \
- __ret; \
-})
-
-
/* Defines */
-#define GS_VERSION_STR "v2.0"
-#define GS_VERSION_NUM 0x0200
+#define GS_VERSION_STR "v2.2"
+#define GS_VERSION_NUM 0x0202
#define GS_LONG_NAME "Gadget Serial"
#define GS_SHORT_NAME "g_serial"
static void gs_break(struct tty_struct *tty, int break_state);
static int gs_ioctl(struct tty_struct *tty, struct file *file,
unsigned int cmd, unsigned long arg);
-static void gs_set_termios(struct tty_struct *tty, struct termios *old);
+static void gs_set_termios(struct tty_struct *tty, struct ktermios *old);
static int gs_send(struct gs_dev *dev);
static int gs_send_packet(struct gs_dev *dev, char *packet,
/* tty driver struct */
-static struct tty_operations gs_tty_ops = {
+static const struct tty_operations gs_tty_ops = {
.open = gs_open,
.close = gs_close,
.write = gs_write,
gs_tty_driver->owner = THIS_MODULE;
gs_tty_driver->driver_name = GS_SHORT_NAME;
gs_tty_driver->name = "ttygs";
- gs_tty_driver->devfs_name = "usb/ttygs/";
gs_tty_driver->major = GS_MAJOR;
gs_tty_driver->minor_start = GS_MINOR_START;
gs_tty_driver->type = TTY_DRIVER_TYPE_SERIAL;
gs_tty_driver->subtype = SERIAL_TYPE_NORMAL;
- gs_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_NO_DEVFS;
+ gs_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
gs_tty_driver->init_termios = tty_std_termios;
gs_tty_driver->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL;
tty_set_operations(gs_tty_driver, &gs_tty_ops);
/*
* gs_close
*/
+
+#define GS_WRITE_FINISHED_EVENT_SAFELY(p) \
+({ \
+ int cond; \
+ \
+ spin_lock_irq(&(p)->port_lock); \
+ cond = !(p)->port_dev || !gs_buf_data_avail((p)->port_write_buf); \
+ spin_unlock_irq(&(p)->port_lock); \
+ cond; \
+})
+
static void gs_close(struct tty_struct *tty, struct file *file)
{
- unsigned long flags;
struct gs_port *port = tty->driver_data;
struct semaphore *sem;
sem = &gs_open_close_sem[port->port_num];
down(sem);
- spin_lock_irqsave(&port->port_lock, flags);
+ spin_lock_irq(&port->port_lock);
if (port->port_open_count == 0) {
printk(KERN_ERR
/* wait for write buffer to drain, or */
/* at most GS_CLOSE_TIMEOUT seconds */
if (gs_buf_data_avail(port->port_write_buf) > 0) {
- spin_unlock_irqrestore(&port->port_lock, flags);
- wait_cond_interruptible_timeout(port->port_write_wait,
- port->port_dev == NULL
- || gs_buf_data_avail(port->port_write_buf) == 0,
- &port->port_lock, flags, GS_CLOSE_TIMEOUT * HZ);
- spin_lock_irqsave(&port->port_lock, flags);
+ spin_unlock_irq(&port->port_lock);
+ wait_event_interruptible_timeout(port->port_write_wait,
+ GS_WRITE_FINISHED_EVENT_SAFELY(port),
+ GS_CLOSE_TIMEOUT * HZ);
+ spin_lock_irq(&port->port_lock);
}
/* free disconnected port on final close */
port->port_num, tty, file);
exit:
- spin_unlock_irqrestore(&port->port_lock, flags);
+ spin_unlock_irq(&port->port_lock);
up(sem);
}
/*
* gs_set_termios
*/
-static void gs_set_termios(struct tty_struct *tty, struct termios *old)
+static void gs_set_termios(struct tty_struct *tty, struct ktermios *old)
{
}
gs_debug_level(3, "gs_send: len=%d, 0x%2.2x 0x%2.2x 0x%2.2x ...\n", len, *((unsigned char *)req->buf), *((unsigned char *)req->buf+1), *((unsigned char *)req->buf+2));
list_del(&req_entry->re_entry);
req->length = len;
+ spin_unlock_irqrestore(&dev->dev_lock, flags);
if ((ret=usb_ep_queue(ep, req, GFP_ATOMIC))) {
printk(KERN_ERR
"gs_send: cannot queue read request, ret=%d\n",
ret);
+ spin_lock_irqsave(&dev->dev_lock, flags);
break;
}
+ spin_lock_irqsave(&dev->dev_lock, flags);
} else {
break;
}
* Called on module load. Allocates and initializes the device
* structure and a control request.
*/
-static int gs_bind(struct usb_gadget *gadget)
+static int __init gs_bind(struct usb_gadget *gadget)
{
int ret;
struct usb_ep *ep;
return -ENOMEM;
snprintf(manufacturer, sizeof(manufacturer), "%s %s with %s",
- system_utsname.sysname, system_utsname.release,
+ init_utsname()->sysname, init_utsname()->release,
gadget->name);
memset(dev, 0, sizeof(struct gs_dev));
* Called on module unload. Frees the control request and device
* structure.
*/
-static void gs_unbind(struct usb_gadget *gadget)
+static void /* __init_or_exit */ gs_unbind(struct usb_gadget *gadget)
{
struct gs_dev *dev = get_gadget_data(gadget);
return -EIO;
for (i=0; i<GS_NUM_PORTS; i++) {
- if ((port=(struct gs_port *)kmalloc(sizeof(struct gs_port), kmalloc_flags)) == NULL)
+ if ((port=kzalloc(sizeof(struct gs_port), kmalloc_flags)) == NULL)
return -ENOMEM;
- memset(port, 0, sizeof(struct gs_port));
port->port_dev = dev;
port->port_num = i;
port->port_line_coding.dwDTERate = cpu_to_le32(GS_DEFAULT_DTE_RATE);
if (size == 0)
return NULL;
- gb = (struct gs_buf *)kmalloc(sizeof(struct gs_buf), kmalloc_flags);
+ gb = kmalloc(sizeof(struct gs_buf), kmalloc_flags);
if (gb == NULL)
return NULL;