static void ssu100_update_lsr(struct usb_serial_port *port, u8 lsr, char *tty_flag) { struct ssu100_port_private *priv = usb_get_serial_port_data(port); unsigned long flags; spin_lock_irqsave(&priv->status_lock, flags); priv->shadowLSR = lsr; spin_unlock_irqrestore(&priv->status_lock, flags); *tty_flag = TTY_NORMAL; if (lsr & UART_LSR_BRK_ERROR_BITS) { if (lsr & UART_LSR_BI) { priv->icount.brk++; *tty_flag = TTY_BREAK; usb_serial_handle_break(port); } if (lsr & UART_LSR_PE) { priv->icount.parity++; if (*tty_flag == TTY_NORMAL) *tty_flag = TTY_PARITY; } if (lsr & UART_LSR_FE) { priv->icount.frame++; if (*tty_flag == TTY_NORMAL) *tty_flag = TTY_FRAME; } if (lsr & UART_LSR_OE){ priv->icount.overrun++; if (*tty_flag == TTY_NORMAL) *tty_flag = TTY_OVERRUN; } } }
static void usb_debug_process_read_urb(struct urb *urb) { struct usb_serial_port *port = urb->context; if (urb->actual_length == USB_DEBUG_BRK_SIZE && memcmp(urb->transfer_buffer, USB_DEBUG_BRK, USB_DEBUG_BRK_SIZE) == 0) { usb_serial_handle_break(port); return; } usb_serial_generic_process_read_urb(urb); }
static void usb_debug_read_bulk_callback(struct urb *urb) { struct usb_serial_port *port = urb->context; if (urb->actual_length == USB_DEBUG_BRK_SIZE && memcmp(urb->transfer_buffer, USB_DEBUG_BRK, USB_DEBUG_BRK_SIZE) == 0) { usb_serial_handle_break(port); usb_serial_generic_submit_read_urb(port, GFP_ATOMIC); return; } usb_serial_generic_read_bulk_callback(urb); }
static void pl2303_update_line_status(struct usb_serial_port *port, unsigned char *data, unsigned int actual_length) { struct pl2303_private *priv = usb_get_serial_port_data(port); struct tty_struct *tty; unsigned long flags; u8 status_idx = UART_STATE; u8 length = UART_STATE + 1; u8 prev_line_status; u16 idv, idp; idv = le16_to_cpu(port->serial->dev->descriptor.idVendor); idp = le16_to_cpu(port->serial->dev->descriptor.idProduct); if (idv == SIEMENS_VENDOR_ID) { if (idp == SIEMENS_PRODUCT_ID_X65 || idp == SIEMENS_PRODUCT_ID_SX1 || idp == SIEMENS_PRODUCT_ID_X75) { length = 1; status_idx = 0; } } if (actual_length < length) return; /* Save off the uart status for others to look at */ spin_lock_irqsave(&priv->lock, flags); prev_line_status = priv->line_status; priv->line_status = data[status_idx]; spin_unlock_irqrestore(&priv->lock, flags); if (priv->line_status & UART_BREAK_ERROR) usb_serial_handle_break(port); wake_up_interruptible(&port->port.delta_msr_wait); tty = tty_port_tty_get(&port->port); if (!tty) return; if ((priv->line_status ^ prev_line_status) & UART_DCD) usb_serial_handle_dcd_change(port, tty, priv->line_status & UART_DCD); tty_kref_put(tty); }
static void ssu100_update_lsr(struct usb_serial_port *port, u8 lsr, char *tty_flag) { struct ssu100_port_private *priv = usb_get_serial_port_data(port); unsigned long flags; spin_lock_irqsave(&priv->status_lock, flags); priv->shadowLSR = lsr; spin_unlock_irqrestore(&priv->status_lock, flags); *tty_flag = TTY_NORMAL; if (lsr & UART_LSR_BRK_ERROR_BITS) { /* we always want to update icount, but we only want to * update tty_flag for one case */ if (lsr & UART_LSR_BI) { port->icount.brk++; *tty_flag = TTY_BREAK; usb_serial_handle_break(port); } if (lsr & UART_LSR_PE) { port->icount.parity++; if (*tty_flag == TTY_NORMAL) *tty_flag = TTY_PARITY; } if (lsr & UART_LSR_FE) { port->icount.frame++; if (*tty_flag == TTY_NORMAL) *tty_flag = TTY_FRAME; } if (lsr & UART_LSR_OE) { port->icount.overrun++; tty_insert_flip_char(&port->port, 0, TTY_OVERRUN); } } }