diff options
Diffstat (limited to 'drivers/net/usb/hso.c')
| -rw-r--r-- | drivers/net/usb/hso.c | 53 |
1 files changed, 30 insertions, 23 deletions
diff --git a/drivers/net/usb/hso.c b/drivers/net/usb/hso.c index 031d07b105af..1b7cac77159e 100644 --- a/drivers/net/usb/hso.c +++ b/drivers/net/usb/hso.c @@ -102,8 +102,12 @@ #define MAX_RX_URBS 2 -#define get_serial_by_tty(x) \ - (x ? (struct hso_serial *)x->driver_data : NULL) +static inline struct hso_serial *get_serial_by_tty(struct tty_struct *tty) +{ + if (tty) + return tty->driver_data; + return NULL; +} /*****************************************************************************/ /* Debugging functions */ @@ -294,24 +298,25 @@ static int hso_get_activity(struct hso_device *hso_dev); /* #define DEBUG */ -#define dev2net(x) (x->port_data.dev_net) -#define dev2ser(x) (x->port_data.dev_serial) +static inline struct hso_net *dev2net(struct hso_device *hso_dev) +{ + return hso_dev->port_data.dev_net; +} + +static inline struct hso_serial *dev2ser(struct hso_device *hso_dev) +{ + return hso_dev->port_data.dev_serial; +} /* Debugging functions */ #ifdef DEBUG static void dbg_dump(int line_count, const char *func_name, unsigned char *buf, unsigned int len) { - u8 i = 0; + static char name[255]; - printk(KERN_DEBUG "[%d:%s]: len %d", line_count, func_name, len); - - for (i = 0; i < len; i++) { - if (!(i % 16)) - printk("\n 0x%03x: ", i); - printk("%02x ", (unsigned char)buf[i]); - } - printk("\n"); + sprintf(name, "hso[%d:%s]", line_count, func_name); + print_hex_dump_bytes(name, DUMP_PREFIX_NONE, buf, len); } #define DUMP(buf_, len_) \ @@ -528,13 +533,12 @@ static struct hso_serial *get_serial_by_shared_int_and_type( static struct hso_serial *get_serial_by_index(unsigned index) { - struct hso_serial *serial; + struct hso_serial *serial = NULL; unsigned long flags; - if (!serial_table[index]) - return NULL; spin_lock_irqsave(&serial_table_lock, flags); - serial = dev2ser(serial_table[index]); + if (serial_table[index]) + serial = dev2ser(serial_table[index]); spin_unlock_irqrestore(&serial_table_lock, flags); return serial; @@ -561,6 +565,7 @@ static int get_free_serial_index(void) static void set_serial_by_index(unsigned index, struct hso_serial *serial) { unsigned long flags; + spin_lock_irqsave(&serial_table_lock, flags); if (serial) serial_table[index] = serial->parent; @@ -569,7 +574,7 @@ static void set_serial_by_index(unsigned index, struct hso_serial *serial) spin_unlock_irqrestore(&serial_table_lock, flags); } -/* log a meaningfull explanation of an USB status */ +/* log a meaningful explanation of an USB status */ static void log_usb_status(int status, const char *function) { char *explanation; @@ -1103,8 +1108,8 @@ static void hso_serial_close(struct tty_struct *tty, struct file *filp) /* reset the rts and dtr */ /* do the actual close */ serial->open_count--; + kref_put(&serial->parent->ref, hso_serial_ref_free); if (serial->open_count <= 0) { - kref_put(&serial->parent->ref, hso_serial_ref_free); serial->open_count = 0; if (serial->tty) { serial->tty->driver_data = NULL; @@ -1467,7 +1472,8 @@ static void hso_std_serial_write_bulk_callback(struct urb *urb) return; } hso_put_activity(serial->parent); - tty_wakeup(serial->tty); + if (serial->tty) + tty_wakeup(serial->tty); hso_kick_transmit(serial); D1(" "); @@ -1538,7 +1544,8 @@ static void ctrl_callback(struct urb *urb) clear_bit(HSO_SERIAL_FLAG_RX_SENT, &serial->flags); } else { hso_put_activity(serial->parent); - tty_wakeup(serial->tty); + if (serial->tty) + tty_wakeup(serial->tty); /* response to a write command */ hso_kick_transmit(serial); } @@ -2652,7 +2659,7 @@ static void hso_free_interface(struct usb_interface *interface) hso_stop_net_device(network_table[i]); cancel_work_sync(&network_table[i]->async_put_intf); cancel_work_sync(&network_table[i]->async_get_intf); - if(rfk) + if (rfk) rfkill_unregister(rfk); hso_free_net_device(network_table[i]); } @@ -2723,7 +2730,7 @@ static int hso_mux_submit_intr_urb(struct hso_shared_int *shared_int, } /* operations setup of the serial interface */ -static struct tty_operations hso_serial_ops = { +static const struct tty_operations hso_serial_ops = { .open = hso_serial_open, .close = hso_serial_close, .write = hso_serial_write, |