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USB: add USB serial ssu100 driver
Add support for the Quatech SSU-100 single port usb to serial device. This driver is based on the ftdi_sio.c driver and the original serqt_usb driver from Quatech. Signed-off-by: Bill Pemberton <wfp5p@virginia.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Bill Pemberton
Greg Kroah-Hartman
parent
f283925fe9
commit
52af954599
@ -642,6 +642,15 @@ config USB_SERIAL_ZIO
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To compile this driver as a module, choose M here: the
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module will be called zio.
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config USB_SERIAL_SSU100
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tristate "USB Quatech SSU-100 Single Port Serial Driver"
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help
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Say Y here if you want to use the Quatech SSU-100 single
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port usb to serial adapter.
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To compile this driver as a module, choose M here: the
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module will be called ssu100.
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config USB_SERIAL_DEBUG
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tristate "USB Debugging Device"
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help
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@ -51,6 +51,7 @@ obj-$(CONFIG_USB_SERIAL_SAFE) += safe_serial.o
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obj-$(CONFIG_USB_SERIAL_SIEMENS_MPI) += siemens_mpi.o
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obj-$(CONFIG_USB_SERIAL_SIERRAWIRELESS) += sierra.o
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obj-$(CONFIG_USB_SERIAL_SPCP8X5) += spcp8x5.o
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obj-$(CONFIG_USB_SERIAL_SSU100) += ssu100.o
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obj-$(CONFIG_USB_SERIAL_SYMBOL) += symbolserial.o
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obj-$(CONFIG_USB_SERIAL_WWAN) += usb_wwan.o
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obj-$(CONFIG_USB_SERIAL_TI) += ti_usb_3410_5052.o
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698
drivers/usb/serial/ssu100.c
Normal file
698
drivers/usb/serial/ssu100.c
Normal file
@ -0,0 +1,698 @@
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/*
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* usb-serial driver for Quatech SSU-100
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*
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* based on ftdi_sio.c and the original serqt_usb.c from Quatech
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*
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*/
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#include <linux/errno.h>
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#include <linux/init.h>
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#include <linux/slab.h>
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#include <linux/tty.h>
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#include <linux/tty_driver.h>
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#include <linux/tty_flip.h>
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#include <linux/module.h>
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#include <linux/serial.h>
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#include <linux/usb.h>
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#include <linux/usb/serial.h>
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#include <linux/uaccess.h>
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#define QT_OPEN_CLOSE_CHANNEL 0xca
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#define QT_SET_GET_DEVICE 0xc2
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#define QT_SET_GET_REGISTER 0xc0
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#define QT_GET_SET_PREBUF_TRIG_LVL 0xcc
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#define QT_SET_ATF 0xcd
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#define QT_GET_SET_UART 0xc1
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#define QT_TRANSFER_IN 0xc0
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#define QT_HW_FLOW_CONTROL_MASK 0xc5
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#define QT_SW_FLOW_CONTROL_MASK 0xc6
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#define MODEM_CTL_REGISTER 0x04
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#define MODEM_STATUS_REGISTER 0x06
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#define SERIAL_LSR_OE 0x02
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#define SERIAL_LSR_PE 0x04
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#define SERIAL_LSR_FE 0x08
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#define SERIAL_LSR_BI 0x10
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#define SERIAL_LSR_TEMT 0x40
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#define SERIAL_MCR_DTR 0x01
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#define SERIAL_MCR_RTS 0x02
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#define SERIAL_MCR_LOOP 0x10
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#define SERIAL_MSR_CTS 0x10
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#define SERIAL_MSR_CD 0x80
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#define SERIAL_MSR_RI 0x40
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#define SERIAL_MSR_DSR 0x20
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#define SERIAL_MSR_MASK 0xf0
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#define SERIAL_CRTSCTS ((SERIAL_MCR_RTS << 8) | SERIAL_MSR_CTS)
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#define SERIAL_8_DATA 0x03
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#define SERIAL_7_DATA 0x02
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#define SERIAL_6_DATA 0x01
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#define SERIAL_5_DATA 0x00
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#define SERIAL_ODD_PARITY 0X08
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#define SERIAL_EVEN_PARITY 0X18
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#define MAX_BAUD_RATE 460800
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#define ATC_DISABLED 0x00
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#define DUPMODE_BITS 0xc0
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#define RR_BITS 0x03
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#define LOOPMODE_BITS 0x41
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#define RS232_MODE 0x00
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#define RTSCTS_TO_CONNECTOR 0x40
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#define CLKS_X4 0x02
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#define FULLPWRBIT 0x00000080
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#define NEXT_BOARD_POWER_BIT 0x00000004
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static int debug = 1;
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/* Version Information */
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#define DRIVER_VERSION "v0.1"
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#define DRIVER_DESC "Quatech SSU-100 USB to Serial Driver"
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#define USB_VENDOR_ID_QUATECH 0x061d /* Quatech VID */
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#define QUATECH_SSU100 0xC020 /* SSU100 */
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static const struct usb_device_id id_table[] = {
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{USB_DEVICE(USB_VENDOR_ID_QUATECH, QUATECH_SSU100)},
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{} /* Terminating entry */
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};
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MODULE_DEVICE_TABLE(usb, id_table);
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static struct usb_driver ssu100_driver = {
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.name = "ssu100",
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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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.suspend = usb_serial_suspend,
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.resume = usb_serial_resume,
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.no_dynamic_id = 1,
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.supports_autosuspend = 1,
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};
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struct ssu100_port_private {
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u8 shadowLSR;
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u8 shadowMSR;
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wait_queue_head_t delta_msr_wait; /* Used for TIOCMIWAIT */
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unsigned short max_packet_size;
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};
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static void ssu100_release(struct usb_serial *serial)
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{
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struct ssu100_port_private *priv = usb_get_serial_port_data(*serial->port);
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dbg("%s", __func__);
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kfree(priv);
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}
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static inline int ssu100_control_msg(struct usb_device *dev,
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u8 request, u16 data, u16 index)
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{
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return usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
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request, 0x40, data, index,
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NULL, 0, 300);
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}
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static inline int ssu100_setdevice(struct usb_device *dev, u8 *data)
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{
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u16 x = ((u16)(data[1] << 8) | (u16)(data[0]));
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return ssu100_control_msg(dev, QT_SET_GET_DEVICE, x, 0);
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}
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static inline int ssu100_getdevice(struct usb_device *dev, u8 *data)
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{
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return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
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QT_SET_GET_DEVICE, 0xc0, 0, 0,
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data, 3, 300);
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}
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static inline int ssu100_getregister(struct usb_device *dev,
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unsigned short uart,
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unsigned short reg,
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u8 *data)
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{
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return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
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QT_SET_GET_REGISTER, 0xc0, reg,
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uart, data, sizeof(*data), 300);
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}
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static inline int ssu100_setregister(struct usb_device *dev,
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unsigned short uart,
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u16 data)
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{
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u16 value = (data << 8) | MODEM_CTL_REGISTER;
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return usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
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QT_SET_GET_REGISTER, 0x40, value, uart,
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NULL, 0, 300);
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}
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#define set_mctrl(dev, set) update_mctrl((dev), (set), 0)
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#define clear_mctrl(dev, clear) update_mctrl((dev), 0, (clear))
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/* these do not deal with device that have more than 1 port */
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static inline int update_mctrl(struct usb_device *dev, unsigned int set,
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unsigned int clear)
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{
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unsigned urb_value;
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int result;
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if (((set | clear) & (TIOCM_DTR | TIOCM_RTS)) == 0) {
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dbg("%s - DTR|RTS not being set|cleared", __func__);
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return 0; /* no change */
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}
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clear &= ~set; /* 'set' takes precedence over 'clear' */
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urb_value = 0;
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if (set & TIOCM_DTR)
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urb_value |= SERIAL_MCR_DTR;
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if (set & TIOCM_RTS)
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urb_value |= SERIAL_MCR_RTS;
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result = ssu100_setregister(dev, 0, urb_value);
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if (result < 0)
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dbg("%s Error from MODEM_CTRL urb", __func__);
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return result;
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}
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static int ssu100_initdevice(struct usb_device *dev)
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{
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u8 *data;
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int result = 0;
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dbg("%s", __func__);
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data = kzalloc(3, GFP_KERNEL);
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if (!data)
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return -ENOMEM;
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result = ssu100_getdevice(dev, data);
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if (result < 0) {
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dbg("%s - get_device failed %i", __func__, result);
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goto out;
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}
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data[1] &= ~FULLPWRBIT;
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result = ssu100_setdevice(dev, data);
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if (result < 0) {
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dbg("%s - setdevice failed %i", __func__, result);
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goto out;
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}
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result = ssu100_control_msg(dev, QT_GET_SET_PREBUF_TRIG_LVL, 128, 0);
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if (result < 0) {
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dbg("%s - set prebuffer level failed %i", __func__, result);
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goto out;
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}
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result = ssu100_control_msg(dev, QT_SET_ATF, ATC_DISABLED, 0);
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if (result < 0) {
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dbg("%s - set ATFprebuffer level failed %i", __func__, result);
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goto out;
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}
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result = ssu100_getdevice(dev, data);
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if (result < 0) {
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dbg("%s - get_device failed %i", __func__, result);
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goto out;
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}
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data[0] &= ~(RR_BITS | DUPMODE_BITS);
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data[0] |= CLKS_X4;
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data[1] &= ~(LOOPMODE_BITS);
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data[1] |= RS232_MODE;
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result = ssu100_setdevice(dev, data);
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if (result < 0) {
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dbg("%s - setdevice failed %i", __func__, result);
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goto out;
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}
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out: kfree(data);
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return result;
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}
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static void ssu100_set_termios(struct tty_struct *tty,
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struct usb_serial_port *port,
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struct ktermios *old_termios)
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{
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struct usb_device *dev = port->serial->dev;
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struct ktermios *termios = tty->termios;
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u16 baud, divisor, remainder;
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unsigned int cflag = termios->c_cflag;
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u16 urb_value = 0; /* will hold the new flags */
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int result;
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dbg("%s", __func__);
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if (cflag & PARENB) {
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if (cflag & PARODD)
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urb_value |= SERIAL_ODD_PARITY;
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else
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urb_value |= SERIAL_EVEN_PARITY;
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}
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switch (cflag & CSIZE) {
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case CS5:
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urb_value |= SERIAL_5_DATA;
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break;
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case CS6:
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urb_value |= SERIAL_6_DATA;
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break;
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case CS7:
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urb_value |= SERIAL_7_DATA;
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break;
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default:
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case CS8:
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urb_value |= SERIAL_8_DATA;
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break;
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}
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baud = tty_get_baud_rate(tty);
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if (!baud)
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baud = 9600;
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dbg("%s - got baud = %d\n", __func__, baud);
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divisor = MAX_BAUD_RATE / baud;
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remainder = MAX_BAUD_RATE % baud;
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if (((remainder * 2) >= baud) && (baud != 110))
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divisor++;
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urb_value = urb_value << 8;
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result = ssu100_control_msg(dev, QT_GET_SET_UART, divisor, urb_value);
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if (result < 0)
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dbg("%s - set uart failed", __func__);
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if (cflag & CRTSCTS)
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result = ssu100_control_msg(dev, QT_HW_FLOW_CONTROL_MASK,
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SERIAL_CRTSCTS, 0);
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else
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result = ssu100_control_msg(dev, QT_HW_FLOW_CONTROL_MASK,
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0, 0);
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if (result < 0)
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dbg("%s - set HW flow control failed", __func__);
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if (I_IXOFF(tty) || I_IXON(tty)) {
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u16 x = ((u16)(START_CHAR(tty) << 8) | (u16)(STOP_CHAR(tty)));
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result = ssu100_control_msg(dev, QT_SW_FLOW_CONTROL_MASK,
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x, 0);
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} else
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result = ssu100_control_msg(dev, QT_SW_FLOW_CONTROL_MASK,
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0, 0);
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if (result < 0)
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dbg("%s - set SW flow control failed", __func__);
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}
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static int ssu100_open(struct tty_struct *tty, struct usb_serial_port *port)
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{
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struct usb_device *dev = port->serial->dev;
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struct ssu100_port_private *priv = usb_get_serial_port_data(port);
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u8 *data;
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int result;
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dbg("%s - port %d", __func__, port->number);
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data = kzalloc(2, GFP_KERNEL);
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if (!data)
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return -ENOMEM;
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result = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
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QT_OPEN_CLOSE_CHANNEL,
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QT_TRANSFER_IN, 0x01,
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0, data, 2, 300);
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if (result < 0) {
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dbg("%s - open failed %i", __func__, result);
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kfree(data);
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return result;
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}
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priv->shadowLSR = data[0] & (SERIAL_LSR_OE | SERIAL_LSR_PE |
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SERIAL_LSR_FE | SERIAL_LSR_BI);
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priv->shadowMSR = data[1] & (SERIAL_MSR_CTS | SERIAL_MSR_DSR |
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SERIAL_MSR_RI | SERIAL_MSR_CD);
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kfree(data);
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/* set to 9600 */
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result = ssu100_control_msg(dev, QT_GET_SET_UART, 0x30, 0x0300);
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if (result < 0)
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dbg("%s - set uart failed", __func__);
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if (tty)
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ssu100_set_termios(tty, port, tty->termios);
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return usb_serial_generic_open(tty, port);
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}
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static void ssu100_close(struct usb_serial_port *port)
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{
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dbg("%s", __func__);
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usb_serial_generic_close(port);
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}
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static int get_serial_info(struct usb_serial_port *port,
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struct serial_struct __user *retinfo)
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{
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struct serial_struct tmp;
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if (!retinfo)
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return -EFAULT;
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memset(&tmp, 0, sizeof(tmp));
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tmp.line = port->serial->minor;
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tmp.port = 0;
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tmp.irq = 0;
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tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ;
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tmp.xmit_fifo_size = port->bulk_out_size;
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tmp.baud_base = 9600;
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tmp.close_delay = 5*HZ;
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tmp.closing_wait = 30*HZ;
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if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
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return -EFAULT;
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return 0;
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}
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static int ssu100_ioctl(struct tty_struct *tty, struct file *file,
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unsigned int cmd, unsigned long arg)
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{
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struct usb_serial_port *port = tty->driver_data;
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struct ssu100_port_private *priv = usb_get_serial_port_data(port);
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dbg("%s cmd 0x%04x", __func__, cmd);
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switch (cmd) {
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case TIOCGSERIAL:
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return get_serial_info(port,
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(struct serial_struct __user *) arg);
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case TIOCMIWAIT:
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while (priv != NULL) {
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u8 prevMSR = priv->shadowMSR & SERIAL_MSR_MASK;
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interruptible_sleep_on(&priv->delta_msr_wait);
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/* see if a signal did it */
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if (signal_pending(current))
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return -ERESTARTSYS;
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else {
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u8 diff = (priv->shadowMSR & SERIAL_MSR_MASK) ^ prevMSR;
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if (!diff)
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return -EIO; /* no change => error */
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/* Return 0 if caller wanted to know about
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these bits */
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if (((arg & TIOCM_RNG) && (diff & SERIAL_MSR_RI)) ||
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((arg & TIOCM_DSR) && (diff & SERIAL_MSR_DSR)) ||
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((arg & TIOCM_CD) && (diff & SERIAL_MSR_CD)) ||
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((arg & TIOCM_CTS) && (diff & SERIAL_MSR_CTS)))
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return 0;
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}
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}
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return 0;
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default:
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break;
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}
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dbg("%s arg not supported", __func__);
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return -ENOIOCTLCMD;
|
||||
}
|
||||
|
||||
static void ssu100_set_max_packet_size(struct usb_serial_port *port)
|
||||
{
|
||||
struct ssu100_port_private *priv = usb_get_serial_port_data(port);
|
||||
struct usb_serial *serial = port->serial;
|
||||
struct usb_device *udev = serial->dev;
|
||||
|
||||
struct usb_interface *interface = serial->interface;
|
||||
struct usb_endpoint_descriptor *ep_desc = &interface->cur_altsetting->endpoint[1].desc;
|
||||
|
||||
unsigned num_endpoints;
|
||||
int i;
|
||||
|
||||
num_endpoints = interface->cur_altsetting->desc.bNumEndpoints;
|
||||
dev_info(&udev->dev, "Number of endpoints %d\n", num_endpoints);
|
||||
|
||||
for (i = 0; i < num_endpoints; i++) {
|
||||
dev_info(&udev->dev, "Endpoint %d MaxPacketSize %d\n", i+1,
|
||||
interface->cur_altsetting->endpoint[i].desc.wMaxPacketSize);
|
||||
ep_desc = &interface->cur_altsetting->endpoint[i].desc;
|
||||
}
|
||||
|
||||
/* set max packet size based on descriptor */
|
||||
priv->max_packet_size = ep_desc->wMaxPacketSize;
|
||||
|
||||
dev_info(&udev->dev, "Setting MaxPacketSize %d\n", priv->max_packet_size);
|
||||
}
|
||||
|
||||
static int ssu100_attach(struct usb_serial *serial)
|
||||
{
|
||||
struct ssu100_port_private *priv;
|
||||
struct usb_serial_port *port = *serial->port;
|
||||
|
||||
dbg("%s", __func__);
|
||||
|
||||
priv = kzalloc(sizeof(*priv), GFP_KERNEL);
|
||||
if (!priv) {
|
||||
dev_err(&port->dev, "%s- kmalloc(%Zd) failed.\n", __func__,
|
||||
sizeof(*priv));
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
init_waitqueue_head(&priv->delta_msr_wait);
|
||||
usb_set_serial_port_data(port, priv);
|
||||
|
||||
ssu100_set_max_packet_size(port);
|
||||
|
||||
return ssu100_initdevice(serial->dev);
|
||||
}
|
||||
|
||||
static int ssu100_tiocmget(struct tty_struct *tty, struct file *file)
|
||||
{
|
||||
struct usb_serial_port *port = tty->driver_data;
|
||||
struct usb_device *dev = port->serial->dev;
|
||||
u8 *d;
|
||||
int r;
|
||||
|
||||
dbg("%s\n", __func__);
|
||||
|
||||
d = kzalloc(2, GFP_KERNEL);
|
||||
if (!d)
|
||||
return -ENOMEM;
|
||||
|
||||
r = ssu100_getregister(dev, 0, MODEM_CTL_REGISTER, d);
|
||||
if (r < 0)
|
||||
goto mget_out;
|
||||
|
||||
r = ssu100_getregister(dev, 0, MODEM_STATUS_REGISTER, d+1);
|
||||
if (r < 0)
|
||||
goto mget_out;
|
||||
|
||||
r = (d[0] & SERIAL_MCR_DTR ? TIOCM_DTR : 0) |
|
||||
(d[0] & SERIAL_MCR_RTS ? TIOCM_RTS : 0) |
|
||||
(d[1] & SERIAL_MSR_CTS ? TIOCM_CTS : 0) |
|
||||
(d[1] & SERIAL_MSR_CD ? TIOCM_CAR : 0) |
|
||||
(d[1] & SERIAL_MSR_RI ? TIOCM_RI : 0) |
|
||||
(d[1] & SERIAL_MSR_DSR ? TIOCM_DSR : 0);
|
||||
|
||||
mget_out:
|
||||
kfree(d);
|
||||
return r;
|
||||
}
|
||||
|
||||
static int ssu100_tiocmset(struct tty_struct *tty, struct file *file,
|
||||
unsigned int set, unsigned int clear)
|
||||
{
|
||||
struct usb_serial_port *port = tty->driver_data;
|
||||
struct usb_device *dev = port->serial->dev;
|
||||
|
||||
dbg("%s\n", __func__);
|
||||
return update_mctrl(dev, set, clear);
|
||||
}
|
||||
|
||||
static void ssu100_dtr_rts(struct usb_serial_port *port, int on)
|
||||
{
|
||||
struct usb_device *dev = port->serial->dev;
|
||||
|
||||
dbg("%s\n", __func__);
|
||||
|
||||
mutex_lock(&port->serial->disc_mutex);
|
||||
if (!port->serial->disconnected) {
|
||||
/* Disable flow control */
|
||||
if (!on &&
|
||||
ssu100_setregister(dev, 0, 0) < 0)
|
||||
dev_err(&port->dev, "error from flowcontrol urb\n");
|
||||
/* drop RTS and DTR */
|
||||
if (on)
|
||||
set_mctrl(dev, TIOCM_DTR | TIOCM_RTS);
|
||||
else
|
||||
clear_mctrl(dev, TIOCM_DTR | TIOCM_RTS);
|
||||
}
|
||||
mutex_unlock(&port->serial->disc_mutex);
|
||||
}
|
||||
|
||||
static int ssu100_process_packet(struct tty_struct *tty,
|
||||
struct usb_serial_port *port,
|
||||
struct ssu100_port_private *priv,
|
||||
char *packet, int len)
|
||||
{
|
||||
int i;
|
||||
char flag;
|
||||
char *ch;
|
||||
|
||||
dbg("%s - port %d", __func__, port->number);
|
||||
|
||||
if (len < 4) {
|
||||
dbg("%s - malformed packet", __func__);
|
||||
return 0;
|
||||
}
|
||||
|
||||
if ((packet[0] == 0x1b) && (packet[1] == 0x1b) &&
|
||||
((packet[2] == 0x00) || (packet[2] == 0x01))) {
|
||||
if (packet[2] == 0x00)
|
||||
priv->shadowLSR = packet[3] & (SERIAL_LSR_OE |
|
||||
SERIAL_LSR_PE |
|
||||
SERIAL_LSR_FE |
|
||||
SERIAL_LSR_BI);
|
||||
|
||||
if (packet[2] == 0x01) {
|
||||
priv->shadowMSR = packet[3];
|
||||
wake_up_interruptible(&priv->delta_msr_wait);
|
||||
}
|
||||
|
||||
len -= 4;
|
||||
ch = packet + 4;
|
||||
} else
|
||||
ch = packet;
|
||||
|
||||
if (!len)
|
||||
return 0; /* status only */
|
||||
|
||||
if (port->port.console && port->sysrq) {
|
||||
for (i = 0; i < len; i++, ch++) {
|
||||
if (!usb_serial_handle_sysrq_char(tty, port, *ch))
|
||||
tty_insert_flip_char(tty, *ch, flag);
|
||||
}
|
||||
} else
|
||||
tty_insert_flip_string_fixed_flag(tty, ch, flag, len);
|
||||
|
||||
return len;
|
||||
}
|
||||
|
||||
static void ssu100_process_read_urb(struct urb *urb)
|
||||
{
|
||||
struct usb_serial_port *port = urb->context;
|
||||
struct ssu100_port_private *priv = usb_get_serial_port_data(port);
|
||||
char *data = (char *)urb->transfer_buffer;
|
||||
struct tty_struct *tty;
|
||||
int count = 0;
|
||||
int i;
|
||||
int len;
|
||||
|
||||
dbg("%s", __func__);
|
||||
|
||||
tty = tty_port_tty_get(&port->port);
|
||||
if (!tty)
|
||||
return;
|
||||
|
||||
for (i = 0; i < urb->actual_length; i += priv->max_packet_size) {
|
||||
len = min_t(int, urb->actual_length - i, priv->max_packet_size);
|
||||
count += ssu100_process_packet(tty, port, priv, &data[i], len);
|
||||
}
|
||||
|
||||
if (count)
|
||||
tty_flip_buffer_push(tty);
|
||||
tty_kref_put(tty);
|
||||
}
|
||||
|
||||
|
||||
static struct usb_serial_driver ssu100_device = {
|
||||
.driver = {
|
||||
.owner = THIS_MODULE,
|
||||
.name = "ssu100",
|
||||
},
|
||||
.description = DRIVER_DESC,
|
||||
.id_table = id_table,
|
||||
.usb_driver = &ssu100_driver,
|
||||
.num_ports = 1,
|
||||
.bulk_in_size = 256,
|
||||
.bulk_out_size = 256,
|
||||
.open = ssu100_open,
|
||||
.close = ssu100_close,
|
||||
.attach = ssu100_attach,
|
||||
.release = ssu100_release,
|
||||
.dtr_rts = ssu100_dtr_rts,
|
||||
.process_read_urb = ssu100_process_read_urb,
|
||||
.tiocmget = ssu100_tiocmget,
|
||||
.tiocmset = ssu100_tiocmset,
|
||||
.ioctl = ssu100_ioctl,
|
||||
.set_termios = ssu100_set_termios,
|
||||
};
|
||||
|
||||
static int __init ssu100_init(void)
|
||||
{
|
||||
int retval;
|
||||
|
||||
dbg("%s", __func__);
|
||||
|
||||
/* register with usb-serial */
|
||||
retval = usb_serial_register(&ssu100_device);
|
||||
|
||||
if (retval)
|
||||
goto failed_usb_sio_register;
|
||||
|
||||
retval = usb_register(&ssu100_driver);
|
||||
if (retval)
|
||||
goto failed_usb_register;
|
||||
|
||||
printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
|
||||
DRIVER_DESC "\n");
|
||||
|
||||
return 0;
|
||||
|
||||
failed_usb_register:
|
||||
usb_serial_deregister(&ssu100_device);
|
||||
failed_usb_sio_register:
|
||||
return retval;
|
||||
}
|
||||
|
||||
static void __exit ssu100_exit(void)
|
||||
{
|
||||
usb_deregister(&ssu100_driver);
|
||||
usb_serial_deregister(&ssu100_device);
|
||||
}
|
||||
|
||||
module_init(ssu100_init);
|
||||
module_exit(ssu100_exit);
|
||||
|
||||
MODULE_DESCRIPTION(DRIVER_DESC);
|
||||
MODULE_LICENSE("GPL");
|
||||
|
||||
module_param(debug, bool, S_IRUGO | S_IWUSR);
|
||||
MODULE_PARM_DESC(debug, "Debug enabled or not");
|
||||
Loading…
x
Reference in New Issue
Block a user