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Subject[PATCH] USB: serial: ark3116.c: Remove unused TIOCSSERIAL case from ioctl
The patch removes unused TIOCSSERIAL case from ioctl. TIOCGSERIAL case
moves to the get_serial_info() function. Some magic numbers moves to
#define directives.

Signed-off-by: Mikhail Zaytsev <flashed@mail.ru>
---
drivers/usb/serial/ark3116.c | 54 ++++++++++++++++++++++++++------------------
1 file changed, 32 insertions(+), 22 deletions(-)

diff --git a/drivers/usb/serial/ark3116.c b/drivers/usb/serial/ark3116.c
index 23d46ef87..f45f69e18 100644
--- a/drivers/usb/serial/ark3116.c
+++ b/drivers/usb/serial/ark3116.c
@@ -36,13 +36,19 @@
#define DRIVER_DESC "USB ARK3116 serial/IrDA driver"
#define DRIVER_DEV_DESC "ARK3116 RS232/IrDA"
#define DRIVER_NAME "ark3116"
+#define ARK3116_BAUDRATE 460800
+
+#define RS232_VENDOR 0x6547
+#define RS232_PRODUCT 0x0232
+#define IRDA_VENDOR 0x18ec
+#define IRDA_PRODUCT 0x3118

/* usb timeout of 1 second */
#define ARK_TIMEOUT 1000

static const struct usb_device_id id_table[] = {
- { USB_DEVICE(0x6547, 0x0232) },
- { USB_DEVICE(0x18ec, 0x3118) }, /* USB to IrDA adapter */
+ { USB_DEVICE(RS232_VENDOR, RS232_PRODUCT) },
+ { USB_DEVICE(IRDA_VENDOR, IRDA_PRODUCT) }, /* USB to IrDA adapter */
{ },
};
MODULE_DEVICE_TABLE(usb, id_table);
@@ -50,8 +56,8 @@ MODULE_DEVICE_TABLE(usb, id_table);
static int is_irda(struct usb_serial *serial)
{
struct usb_device *dev = serial->dev;
- if (le16_to_cpu(dev->descriptor.idVendor) == 0x18ec &&
- le16_to_cpu(dev->descriptor.idProduct) == 0x3118)
+ if (le16_to_cpu(dev->descriptor.idVendor) == IRDA_VENDOR &&
+ le16_to_cpu(dev->descriptor.idProduct) == IRDA_PRODUCT)
return 1;
return 0;
}
@@ -397,31 +403,35 @@ static int ark3116_open(struct tty_struct *tty, struct usb_serial_port *port)
return result;
}

+static int ark3116_get_serial_info(struct usb_serial_port *port,
+ unsigned long arg)
+{
+ struct serial_struct ser;
+
+ memset(&ser, 0, sizeof(ser));
+
+ ser.type = PORT_16654;
+ ser.line = port->minor;
+ ser.port = port->port_number;
+ ser.custom_divisor = 0;
+ ser.baud_base = ARK3116_BAUDRATE;
+
+ if (copy_to_user((void __user *)arg, &ser, sizeof(ser)))
+ return -EFAULT;
+
+ return 0;
+}
+
static int ark3116_ioctl(struct tty_struct *tty,
unsigned int cmd, unsigned long arg)
{
struct usb_serial_port *port = tty->driver_data;
- struct serial_struct serstruct;
- void __user *user_arg = (void __user *)arg;

switch (cmd) {
case TIOCGSERIAL:
- /* XXX: Some of these values are probably wrong. */
- memset(&serstruct, 0, sizeof(serstruct));
- serstruct.type = PORT_16654;
- serstruct.line = port->minor;
- serstruct.port = port->port_number;
- serstruct.custom_divisor = 0;
- serstruct.baud_base = 460800;
-
- if (copy_to_user(user_arg, &serstruct, sizeof(serstruct)))
- return -EFAULT;
-
- return 0;
- case TIOCSSERIAL:
- if (copy_from_user(&serstruct, user_arg, sizeof(serstruct)))
- return -EFAULT;
- return 0;
+ return ark3116_get_serial_info(port, arg);
+ default:
+ break;
}

return -ENOIOCTLCMD;
--
2.11.0
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