Our int callback will return IIR, not LSR, and bulk-in callback will return
[LSR+Data][LSR+Data], so need to rewrite it
Signed-off-by: Peter Hung <hpeter+linux_kernel@xxxxxxxxx>
---
drivers/usb/serial/f81232.c | 82 +++++++++++++++++++++------------------------
1 file changed, 39 insertions(+), 43 deletions(-)
diff --git a/drivers/usb/serial/f81232.c b/drivers/usb/serial/f81232.c
index efd45a7..b372975 100644
--- a/drivers/usb/serial/f81232.c
+++ b/drivers/usb/serial/f81232.c
@@ -230,17 +230,33 @@ static inline int update_mctrl(struct f81232_private *port_priv,
return status;
}
-static void f81232_update_line_status(struct usb_serial_port *port,
+
+static void f81232_iir_status(struct usb_serial_port *port,
unsigned char *data,
unsigned int actual_length)
{
- /*
- * FIXME: Update port->icount, and call
- *
- * wake_up_interruptible(&port->port.delta_msr_wait);
- *
- * on MSR changes.
- */
+ struct f81232_private *priv = usb_get_serial_port_data(port);
+ struct usb_device *dev = port->serial->dev;
+
+ if (!actual_length)
+ return;
+
+ switch (data[0] & 0x07) {
+ case 0x00: /* msr change */
+ dev_dbg(&dev->dev, "IIR: MSR Change: %x\n", data[0]);
+ schedule_work(&priv->int_worker);
+ break;
+
+ case 0x02: /* tx-empty */
+ break;
+
+ case 0x04: /* rx data available */
+ break;
+
+ case 0x06: /* lsr change */
+ dev_dbg(&dev->dev, "IIR: IIR: LSR Change: %x\n", data[0]);
+ break;
+ }
}
static void f81232_read_int_callback(struct urb *urb)
@@ -271,7 +287,7 @@ static void f81232_read_int_callback(struct urb *urb)
usb_serial_debug_data(&port->dev, __func__,
urb->actual_length, urb->transfer_buffer);
- f81232_update_line_status(port, data, actual_length);
+ f81232_iir_status(port, data, actual_length);
exit:
retval = usb_submit_urb(urb, GFP_ATOMIC);
@@ -284,47 +300,30 @@ exit:
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);
unsigned char *data = urb->transfer_buffer;
char tty_flag = TTY_NORMAL;
- unsigned long flags;
- u8 line_status;
+ u8 line_status = 0;
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);
if (!urb->actual_length)
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;
- dev_dbg(&port->dev, "%s - tty_flag = %d\n", __func__, tty_flag);
-
- /* overrun is special, not associated with a char */
- if (line_status & UART_OVERRUN_ERROR)
- tty_insert_flip_char(&port->port, 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(&port->port, data[i],
- tty_flag);
- } else {
- tty_insert_flip_string_fixed_flag(&port->port, data, tty_flag,
- urb->actual_length);
+ if (urb->actual_length >= 2) {
+
+ for (i = 0 ; i < urb->actual_length ; i += 2) {
+ line_status |= data[i+0];
+ tty_insert_flip_string_fixed_flag(&port->port,
+ &data[i+1], tty_flag, 1);
+ }
+
+ if (unlikely(line_status & UART_OVERRUN_ERROR))
+ tty_insert_flip_char(&port->port, 0, TTY_OVERRUN);
+
+ tty_flip_buffer_push(&port->port);
}
- tty_flip_buffer_push(&port->port);
+
}
static int set_control_lines(struct usb_device *dev, u8 value)
@@ -456,9 +455,6 @@ static int f81232_ioctl(struct tty_struct *tty,
return -ENOIOCTLCMD;
}
-
-
-
static void f81232_int_work_wq(struct work_struct *work)
{
struct f81232_private *priv =
--
1.9.1
--
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