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USB: Digi AccelePort adapted to new tty buffering 

this fixes the flushing trouble due to its own buffering for this driver.


Signed-off-by: Oliver Neukum <oneukum@suse.de>
Cc: Al Borchers <alborchers@steinerpoint.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Oliver Neukum 2007-05-07 13:16:58 +02:00 committed by Greg Kroah-Hartman
parent b308e74d9c
commit 39892da44b
1 changed files with 13 additions and 39 deletions
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52
drivers/usb/serial/digi_acceleport.c
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@ -930,23 +930,17 @@ static void digi_rx_unthrottle( struct usb_serial_port *port )
{
int ret = 0;
int len;
unsigned long flags;
struct digi_port *priv = usb_get_serial_port_data(port);
struct tty_struct *tty = port->tty;
dbg( "digi_rx_unthrottle: TOP: port=%d", priv->dp_port_num );
spin_lock_irqsave( &priv->dp_port_lock, flags );
/* send any buffered chars from throttle time on to tty subsystem */
len = tty_buffer_request_room(tty, priv->dp_in_buf_len);
if( len > 0 ) {
tty_insert_flip_string_flags(tty, priv->dp_in_buf, priv->dp_in_flag_buf, len);
tty_flip_buffer_push( tty );
}
/* turn throttle off */
priv->dp_throttled = 0;
priv->dp_in_buf_len = 0;
priv->dp_throttle_restart = 0;
/* restart read chain */
if( priv->dp_throttle_restart ) {
@ -954,11 +948,6 @@ dbg( "digi_rx_unthrottle: TOP: port=%d", priv->dp_port_num );
ret = usb_submit_urb( port->read_urb, GFP_ATOMIC );
}
/* turn throttle off */
priv->dp_throttled = 0;
priv->dp_in_buf_len = 0;
priv->dp_throttle_restart = 0;
spin_unlock_irqrestore( &priv->dp_port_lock, flags );
if( ret ) {
@ -1864,31 +1853,16 @@ static int digi_read_inb_callback( struct urb *urb )
/* data length is len-1 (one byte of len is status) */
--len;
if( throttled ) {
len = min( len,
DIGI_IN_BUF_SIZE - priv->dp_in_buf_len );
if( len > 0 ) {
memcpy( priv->dp_in_buf + priv->dp_in_buf_len,
data, len );
memset( priv->dp_in_flag_buf
+ priv->dp_in_buf_len, flag, len );
priv->dp_in_buf_len += len;
}
} else {
len = tty_buffer_request_room(tty, len);
if( len > 0 ) {
/* Hot path */
if(flag == TTY_NORMAL)
tty_insert_flip_string(tty, data, len);
else {
for(i = 0; i < len; i++)
tty_insert_flip_char(tty, data[i], flag);
}
tty_flip_buffer_push( tty );
len = tty_buffer_request_room(tty, len);
if( len > 0 ) {
/* Hot path */
if(flag == TTY_NORMAL)
tty_insert_flip_string(tty, data, len);
else {
for(i = 0; i < len; i++)
tty_insert_flip_char(tty, data[i], flag);
}
tty_flip_buffer_push( tty );
}
}