From 94d0f7eac77a84da2cee41b8038796891f75f09e Mon Sep 17 00:00:00 2001 From: Alan Cox Date: Wed, 22 Aug 2007 23:09:16 +0100 Subject: [PATCH] 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 Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/kobil_sct.c | 144 +++++++++++++-------------------- 1 file changed, 55 insertions(+), 89 deletions(-) diff --git a/drivers/usb/serial/kobil_sct.c b/drivers/usb/serial/kobil_sct.c index 02a86dbc0e97..6f224195bd25 100644 --- a/drivers/usb/serial/kobil_sct.c +++ b/drivers/usb/serial/kobil_sct.c @@ -82,6 +82,7 @@ static int kobil_tiocmset(struct usb_serial_port *port, struct file *file, unsigned int set, unsigned int clear); static void kobil_read_int_callback( struct urb *urb ); static void kobil_write_callback( struct urb *purb ); +static void kobil_set_termios(struct usb_serial_port *port, struct ktermios *old); static struct usb_device_id id_table [] = { @@ -119,6 +120,7 @@ static struct usb_serial_driver kobil_device = { .attach = kobil_startup, .shutdown = kobil_shutdown, .ioctl = kobil_ioctl, + .set_termios = kobil_set_termios, .tiocmget = kobil_tiocmget, .tiocmset = kobil_tiocmset, .open = kobil_open, @@ -137,7 +139,6 @@ struct kobil_private { int cur_pos; // index of the next char to send in buf __u16 device_type; int line_state; - struct ktermios internal_termios; }; @@ -216,7 +217,7 @@ static void kobil_shutdown (struct usb_serial *serial) static int kobil_open (struct usb_serial_port *port, struct file *filp) { - int i, result = 0; + int result = 0; struct kobil_private *priv; unsigned char *transfer_buffer; int transfer_buffer_length = 8; @@ -242,16 +243,6 @@ static int kobil_open (struct usb_serial_port *port, struct file *filp) port->tty->termios->c_iflag = IGNBRK | IGNPAR | IXOFF; port->tty->termios->c_oflag &= ~ONLCR; // do NOT translate CR to CR-NL (0x0A -> 0x0A 0x0D) - // set up internal termios structure - priv->internal_termios.c_iflag = port->tty->termios->c_iflag; - priv->internal_termios.c_oflag = port->tty->termios->c_oflag; - priv->internal_termios.c_cflag = port->tty->termios->c_cflag; - priv->internal_termios.c_lflag = port->tty->termios->c_lflag; - - for (i=0; iinternal_termios.c_cc[i] = port->tty->termios->c_cc[i]; - } - // allocate memory for transfer buffer transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL); if (! transfer_buffer) { @@ -607,102 +598,79 @@ static int kobil_tiocmset(struct usb_serial_port *port, struct file *file, return (result < 0) ? result : 0; } - -static int kobil_ioctl(struct usb_serial_port *port, struct file *file, - unsigned int cmd, unsigned long arg) +static void kobil_set_termios(struct usb_serial_port *port, struct ktermios *old) { struct kobil_private * priv; int result; unsigned short urb_val = 0; - unsigned char *transfer_buffer; - int transfer_buffer_length = 8; - char *settings; - void __user *user_arg = (void __user *)arg; + int c_cflag = port->tty->termios->c_cflag; + speed_t speed; + void * settings; priv = usb_get_serial_port_data(port); - if ((priv->device_type == KOBIL_USBTWIN_PRODUCT_ID) || (priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)) { + if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID || priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) // This device doesn't support ioctl calls - return 0; - } + return; - switch (cmd) { - case TCGETS: // 0x5401 - if (!access_ok(VERIFY_WRITE, user_arg, sizeof(struct ktermios))) { - dbg("%s - port %d Error in access_ok", __FUNCTION__, port->number); - return -EFAULT; - } - if (kernel_termios_to_user_termios((struct ktermios __user *)arg, - &priv->internal_termios)) - return -EFAULT; - return 0; - - case TCSETS: // 0x5402 - if (!(port->tty->termios)) { - dbg("%s - port %d Error: port->tty->termios is NULL", __FUNCTION__, port->number); - return -ENOTTY; - } - if (!access_ok(VERIFY_READ, user_arg, sizeof(struct ktermios))) { - dbg("%s - port %d Error in access_ok", __FUNCTION__, port->number); - return -EFAULT; - } - if (user_termios_to_kernel_termios(&priv->internal_termios, - (struct ktermios __user *)arg)) - return -EFAULT; - - settings = kzalloc(50, GFP_KERNEL); - if (! settings) { - return -ENOBUFS; - } - - switch (priv->internal_termios.c_cflag & CBAUD) { - case B1200: + switch (speed = tty_get_baud_rate(port->tty)) { + case 1200: urb_val = SUSBCR_SBR_1200; - strcat(settings, "1200 "); break; - case B9600: + case 9600: default: urb_val = SUSBCR_SBR_9600; - strcat(settings, "9600 "); break; - } + } + urb_val |= (c_cflag & CSTOPB) ? SUSBCR_SPASB_2StopBits : SUSBCR_SPASB_1StopBit; - urb_val |= (priv->internal_termios.c_cflag & CSTOPB) ? SUSBCR_SPASB_2StopBits : SUSBCR_SPASB_1StopBit; - strcat(settings, (priv->internal_termios.c_cflag & CSTOPB) ? "2 StopBits " : "1 StopBit "); + settings = kzalloc(50, GFP_KERNEL); + if (! settings) + return; - if (priv->internal_termios.c_cflag & PARENB) { - if (priv->internal_termios.c_cflag & PARODD) { - urb_val |= SUSBCR_SPASB_OddParity; - strcat(settings, "Odd Parity"); - } else { - urb_val |= SUSBCR_SPASB_EvenParity; - strcat(settings, "Even Parity"); - } + sprintf(settings, "%d ", speed); + + if (c_cflag & PARENB) { + if (c_cflag & PARODD) { + urb_val |= SUSBCR_SPASB_OddParity; + strcat(settings, "Odd Parity"); } else { - urb_val |= SUSBCR_SPASB_NoParity; - strcat(settings, "No Parity"); + urb_val |= SUSBCR_SPASB_EvenParity; + strcat(settings, "Even Parity"); } - dbg("%s - port %d setting port to: %s", __FUNCTION__, port->number, settings ); + } else { + urb_val |= SUSBCR_SPASB_NoParity; + strcat(settings, "No Parity"); + } - result = usb_control_msg( port->serial->dev, - usb_rcvctrlpipe(port->serial->dev, 0 ), - SUSBCRequest_SetBaudRateParityAndStopBits, - USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT, - urb_val, - 0, - settings, - 0, - KOBIL_TIMEOUT - ); + result = usb_control_msg( port->serial->dev, + usb_rcvctrlpipe(port->serial->dev, 0 ), + SUSBCRequest_SetBaudRateParityAndStopBits, + USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT, + urb_val, + 0, + settings, + 0, + KOBIL_TIMEOUT + ); + kfree(settings); +} - dbg("%s - port %d Send set_baudrate URB returns: %i", __FUNCTION__, port->number, result); - kfree(settings); +static int kobil_ioctl(struct usb_serial_port *port, struct file * file, unsigned int cmd, unsigned long arg) +{ + struct kobil_private * priv = usb_get_serial_port_data(port); + unsigned char *transfer_buffer; + int transfer_buffer_length = 8; + int result; + + if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID || priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) + // This device doesn't support ioctl calls return 0; + switch (cmd) { case TCFLSH: // 0x540B transfer_buffer = kmalloc(transfer_buffer_length, GFP_KERNEL); - if (! transfer_buffer) { + if (! transfer_buffer) return -ENOBUFS; - } result = usb_control_msg( port->serial->dev, usb_rcvctrlpipe(port->serial->dev, 0 ), @@ -716,15 +684,13 @@ static int kobil_ioctl(struct usb_serial_port *port, struct file *file, ); dbg("%s - port %d Send reset_all_queues (FLUSH) URB returns: %i", __FUNCTION__, port->number, result); - kfree(transfer_buffer); - return ((result < 0) ? -EFAULT : 0); - + return (result < 0) ? -EFAULT : 0; + default: + return -ENOIOCTLCMD; } - return -ENOIOCTLCMD; } - static int __init kobil_init (void) { int retval;