mirror of https://gitee.com/openkylin/linux.git
USB: kobil_sct: Rework driver
No hardware but this driver is currently totally broken so we can't make it much worse. Remove all tbe broken invalid termios handling and replace it with a proper set_termios method. Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Alan Cox
Greg Kroah-Hartman
parent
c4e41562e0
commit
94d0f7eac7
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@ -82,6 +82,7 @@ static int kobil_tiocmset(struct usb_serial_port *port, struct file *file,
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unsigned int set, unsigned int clear);
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static void kobil_read_int_callback( struct urb *urb );
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static void kobil_write_callback( struct urb *purb );
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static void kobil_set_termios(struct usb_serial_port *port, struct ktermios *old);
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static struct usb_device_id id_table [] = {
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@ -119,6 +120,7 @@ static struct usb_serial_driver kobil_device = {
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.attach = kobil_startup,
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.shutdown = kobil_shutdown,
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.ioctl = kobil_ioctl,
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.set_termios = kobil_set_termios,
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.tiocmget = kobil_tiocmget,
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.tiocmset = kobil_tiocmset,
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.open = kobil_open,
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@ -137,7 +139,6 @@ struct kobil_private {
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int cur_pos; // index of the next char to send in buf
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__u16 device_type;
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int line_state;
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struct ktermios internal_termios;
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};
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@ -216,7 +217,7 @@ static void kobil_shutdown (struct usb_serial *serial)
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static int kobil_open (struct usb_serial_port *port, struct file *filp)
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{
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int i, result = 0;
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int result = 0;
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struct kobil_private *priv;
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unsigned char *transfer_buffer;
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int transfer_buffer_length = 8;
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@ -242,16 +243,6 @@ static int kobil_open (struct usb_serial_port *port, struct file *filp)
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port->tty->termios->c_iflag = IGNBRK | IGNPAR | IXOFF;
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port->tty->termios->c_oflag &= ~ONLCR; // do NOT translate CR to CR-NL (0x0A -> 0x0A 0x0D)
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// set up internal termios structure
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priv->internal_termios.c_iflag = port->tty->termios->c_iflag;
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priv->internal_termios.c_oflag = port->tty->termios->c_oflag;
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priv->internal_termios.c_cflag = port->tty->termios->c_cflag;
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priv->internal_termios.c_lflag = port->tty->termios->c_lflag;
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for (i=0; i<NCCS; i++) {
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priv->internal_termios.c_cc[i] = port->tty->termios->c_cc[i];
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}
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// allocate memory for transfer buffer
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transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
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if (! transfer_buffer) {
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@ -607,102 +598,79 @@ static int kobil_tiocmset(struct usb_serial_port *port, struct file *file,
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return (result < 0) ? result : 0;
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}
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static int kobil_ioctl(struct usb_serial_port *port, struct file *file,
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unsigned int cmd, unsigned long arg)
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static void kobil_set_termios(struct usb_serial_port *port, struct ktermios *old)
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{
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struct kobil_private * priv;
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int result;
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unsigned short urb_val = 0;
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unsigned char *transfer_buffer;
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int transfer_buffer_length = 8;
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char *settings;
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void __user *user_arg = (void __user *)arg;
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int c_cflag = port->tty->termios->c_cflag;
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speed_t speed;
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void * settings;
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priv = usb_get_serial_port_data(port);
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if ((priv->device_type == KOBIL_USBTWIN_PRODUCT_ID) || (priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)) {
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if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID || priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)
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// This device doesn't support ioctl calls
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return 0;
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}
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return;
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switch (cmd) {
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case TCGETS: // 0x5401
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if (!access_ok(VERIFY_WRITE, user_arg, sizeof(struct ktermios))) {
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dbg("%s - port %d Error in access_ok", __FUNCTION__, port->number);
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return -EFAULT;
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}
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if (kernel_termios_to_user_termios((struct ktermios __user *)arg,
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&priv->internal_termios))
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return -EFAULT;
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return 0;
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case TCSETS: // 0x5402
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if (!(port->tty->termios)) {
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dbg("%s - port %d Error: port->tty->termios is NULL", __FUNCTION__, port->number);
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return -ENOTTY;
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}
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if (!access_ok(VERIFY_READ, user_arg, sizeof(struct ktermios))) {
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dbg("%s - port %d Error in access_ok", __FUNCTION__, port->number);
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return -EFAULT;
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}
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if (user_termios_to_kernel_termios(&priv->internal_termios,
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(struct ktermios __user *)arg))
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return -EFAULT;
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settings = kzalloc(50, GFP_KERNEL);
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if (! settings) {
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return -ENOBUFS;
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}
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switch (priv->internal_termios.c_cflag & CBAUD) {
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case B1200:
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switch (speed = tty_get_baud_rate(port->tty)) {
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case 1200:
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urb_val = SUSBCR_SBR_1200;
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strcat(settings, "1200 ");
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break;
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case B9600:
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case 9600:
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default:
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urb_val = SUSBCR_SBR_9600;
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strcat(settings, "9600 ");
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break;
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}
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}
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urb_val |= (c_cflag & CSTOPB) ? SUSBCR_SPASB_2StopBits : SUSBCR_SPASB_1StopBit;
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urb_val |= (priv->internal_termios.c_cflag & CSTOPB) ? SUSBCR_SPASB_2StopBits : SUSBCR_SPASB_1StopBit;
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strcat(settings, (priv->internal_termios.c_cflag & CSTOPB) ? "2 StopBits " : "1 StopBit ");
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settings = kzalloc(50, GFP_KERNEL);
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if (! settings)
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return;
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if (priv->internal_termios.c_cflag & PARENB) {
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if (priv->internal_termios.c_cflag & PARODD) {
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urb_val |= SUSBCR_SPASB_OddParity;
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strcat(settings, "Odd Parity");
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} else {
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urb_val |= SUSBCR_SPASB_EvenParity;
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strcat(settings, "Even Parity");
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}
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sprintf(settings, "%d ", speed);
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if (c_cflag & PARENB) {
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if (c_cflag & PARODD) {
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urb_val |= SUSBCR_SPASB_OddParity;
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strcat(settings, "Odd Parity");
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} else {
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urb_val |= SUSBCR_SPASB_NoParity;
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strcat(settings, "No Parity");
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urb_val |= SUSBCR_SPASB_EvenParity;
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strcat(settings, "Even Parity");
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}
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dbg("%s - port %d setting port to: %s", __FUNCTION__, port->number, settings );
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} else {
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urb_val |= SUSBCR_SPASB_NoParity;
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strcat(settings, "No Parity");
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}
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result = usb_control_msg( port->serial->dev,
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usb_rcvctrlpipe(port->serial->dev, 0 ),
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SUSBCRequest_SetBaudRateParityAndStopBits,
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USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
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urb_val,
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0,
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settings,
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0,
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KOBIL_TIMEOUT
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);
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result = usb_control_msg( port->serial->dev,
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usb_rcvctrlpipe(port->serial->dev, 0 ),
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SUSBCRequest_SetBaudRateParityAndStopBits,
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USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
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urb_val,
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0,
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settings,
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0,
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KOBIL_TIMEOUT
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);
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kfree(settings);
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}
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dbg("%s - port %d Send set_baudrate URB returns: %i", __FUNCTION__, port->number, result);
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kfree(settings);
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static int kobil_ioctl(struct usb_serial_port *port, struct file * file, unsigned int cmd, unsigned long arg)
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{
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struct kobil_private * priv = usb_get_serial_port_data(port);
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unsigned char *transfer_buffer;
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int transfer_buffer_length = 8;
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int result;
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if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID || priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)
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// This device doesn't support ioctl calls
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return 0;
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switch (cmd) {
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case TCFLSH: // 0x540B
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transfer_buffer = kmalloc(transfer_buffer_length, GFP_KERNEL);
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if (! transfer_buffer) {
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if (! transfer_buffer)
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return -ENOBUFS;
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}
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result = usb_control_msg( port->serial->dev,
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usb_rcvctrlpipe(port->serial->dev, 0 ),
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@ -716,15 +684,13 @@ static int kobil_ioctl(struct usb_serial_port *port, struct file *file,
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);
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dbg("%s - port %d Send reset_all_queues (FLUSH) URB returns: %i", __FUNCTION__, port->number, result);
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kfree(transfer_buffer);
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return ((result < 0) ? -EFAULT : 0);
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return (result < 0) ? -EFAULT : 0;
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default:
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return -ENOIOCTLCMD;
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}
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return -ENOIOCTLCMD;
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}
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static int __init kobil_init (void)
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{
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int retval;
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