void usb_serial_generic_process_read_urb(struct urb *urb)
{
struct usb_serial_port *port = urb->context;
struct tty_struct *tty;
char *ch = (char *)urb->transfer_buffer;
int i;
if (!urb->actual_length)
return;
tty = tty_port_tty_get(&port->port);
if (!tty)
return;
/* The per character mucking around with sysrq path it too slow for
stuff like 3G modems, so shortcircuit it in the 99.9999999% of cases
where the USB serial is not a console anyway */
if (!port->port.console || !port->sysrq)
tty_insert_flip_string(tty, ch, urb->actual_length);
else {
for (i = 0; i < urb->actual_length; i++, ch++) {
if (!usb_serial_handle_sysrq_char(tty, port, *ch))
tty_insert_flip_char(tty, *ch, TTY_NORMAL);
}
}
tty_flip_buffer_push(tty);
tty_kref_put(tty);
}
/* Push data to tty layer and resubmit the bulk read URB */
static void flush_and_resubmit_read_urb(struct usb_serial_port *port)
{
struct urb *urb = port->read_urb;
struct tty_struct *tty = tty_port_tty_get(&port->port);
char *ch = (char *)urb->transfer_buffer;
int i;
if (!tty)
goto done;
/* The per character mucking around with sysrq path it too slow for
stuff like 3G modems, so shortcircuit it in the 99.9999999% of cases
where the USB serial is not a console anyway */
if (!port->console || !port->sysrq)
tty_insert_flip_string(tty, ch, urb->actual_length);
else {
/* Push data to tty */
for (i = 0; i < urb->actual_length; i++, ch++) {
if (!usb_serial_handle_sysrq_char(tty, port, *ch))
tty_insert_flip_char(tty, *ch, TTY_NORMAL);
}
}
tty_flip_buffer_push(tty);
tty_kref_put(tty);
done:
usb_serial_generic_resubmit_read_urb(port, GFP_ATOMIC);
}
static void ssu100_process_read_urb(struct urb *urb)
{
struct usb_serial_port *port = urb->context;
char *packet = (char *)urb->transfer_buffer;
char flag = TTY_NORMAL;
u32 len = urb->actual_length;
int i;
char *ch;
if ((len >= 4) &&
(packet[0] == 0x1b) && (packet[1] == 0x1b) &&
((packet[2] == 0x00) || (packet[2] == 0x01))) {
if (packet[2] == 0x00)
ssu100_update_lsr(port, packet[3], &flag);
if (packet[2] == 0x01)
ssu100_update_msr(port, packet[3]);
len -= 4;
ch = packet + 4;
} else
ch = packet;
if (!len)
return; /* status only */
if (port->port.console && port->sysrq) {
for (i = 0; i < len; i++, ch++) {
if (!usb_serial_handle_sysrq_char(port, *ch))
tty_insert_flip_char(&port->port, *ch, flag);
}
} else
tty_insert_flip_string_fixed_flag(&port->port, ch, flag, len);
tty_flip_buffer_push(&port->port);
}
void usb_serial_generic_process_read_urb(struct urb *urb)
{
struct usb_serial_port *port = urb->context;
struct tty_struct *tty;
char *ch = (char *)urb->transfer_buffer;
int i;
if (!urb->actual_length)
return;
tty = tty_port_tty_get(&port->port);
if (!tty)
return;
if (!port->port.console || !port->sysrq)
tty_insert_flip_string(tty, ch, urb->actual_length);
else {
for (i = 0; i < urb->actual_length; i++, ch++) {
if (!usb_serial_handle_sysrq_char(port, *ch))
tty_insert_flip_char(tty, *ch, TTY_NORMAL);
}
}
tty_flip_buffer_push(tty);
tty_kref_put(tty);
}
static void f81232_process_read_urb(struct urb *urb)
{
struct usb_serial_port *port = urb->context;
struct f81232_private *priv = usb_get_serial_port_data(port);
struct tty_struct *tty;
unsigned char *data = urb->transfer_buffer;
char tty_flag = TTY_NORMAL;
unsigned long flags;
u8 line_status;
int i;
/* update line status */
spin_lock_irqsave(&priv->lock, flags);
line_status = priv->line_status;
priv->line_status &= ~UART_STATE_TRANSIENT_MASK;
spin_unlock_irqrestore(&priv->lock, flags);
wake_up_interruptible(&priv->delta_msr_wait);
if (!urb->actual_length)
return;
tty = tty_port_tty_get(&port->port);
if (!tty)
return;
/* break takes precedence over parity, */
/* which takes precedence over framing errors */
if (line_status & UART_BREAK_ERROR)
tty_flag = TTY_BREAK;
else if (line_status & UART_PARITY_ERROR)
tty_flag = TTY_PARITY;
else if (line_status & UART_FRAME_ERROR)
tty_flag = TTY_FRAME;
dbg("%s - tty_flag = %d", __func__, tty_flag);
/* overrun is special, not associated with a char */
if (line_status & UART_OVERRUN_ERROR)
tty_insert_flip_char(tty, 0, TTY_OVERRUN);
if (port->port.console && port->sysrq) {
for (i = 0; i < urb->actual_length; ++i)
if (!usb_serial_handle_sysrq_char(port, data[i]))
tty_insert_flip_char(tty, data[i], tty_flag);
} else {
tty_insert_flip_string_fixed_flag(tty, data, tty_flag,
urb->actual_length);
}
tty_flip_buffer_push(tty);
tty_kref_put(tty);
}
static int ssu100_process_packet(struct urb *urb,
struct tty_struct *tty)
{
struct usb_serial_port *port = urb->context;
char *packet = (char *)urb->transfer_buffer;
char flag = TTY_NORMAL;
u32 len = urb->actual_length;
int i;
char *ch;
dbg("%s - port %d", __func__, port->number);
if ((len >= 4) &&
(packet[0] == 0x1b) && (packet[1] == 0x1b) &&
((packet[2] == 0x00) || (packet[2] == 0x01))) {
if (packet[2] == 0x00) {
ssu100_update_lsr(port, packet[3], &flag);
if (flag == TTY_OVERRUN)
tty_insert_flip_char(tty, 0, TTY_OVERRUN);
}
if (packet[2] == 0x01)
ssu100_update_msr(port, packet[3]);
len -= 4;
ch = packet + 4;
} else
ch = packet;
if (!len)
return 0;
if (port->port.console && port->sysrq) {
for (i = 0; i < len; i++, ch++) {
if (!usb_serial_handle_sysrq_char(port, *ch))
tty_insert_flip_char(tty, *ch, flag);
}
} else
tty_insert_flip_string_fixed_flag(tty, ch, flag, len);
return len;
}
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 = TTY_NORMAL;
char *ch;
dbg("%s - port %d", __func__, port->number);
if ((len >= 4) &&
(packet[0] == 0x1b) && (packet[1] == 0x1b) &&
((packet[2] == 0x00) || (packet[2] == 0x01))) {
if (packet[2] == 0x00) {
ssu100_update_lsr(port, packet[3], &flag);
if (flag == TTY_OVERRUN)
tty_insert_flip_char(tty, 0, TTY_OVERRUN);
}
if (packet[2] == 0x01)
ssu100_update_msr(port, packet[3]);
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(port, *ch))
tty_insert_flip_char(tty, *ch, flag);
}
} else
tty_insert_flip_string_fixed_flag(tty, ch, flag, len);
return len;
}
