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usb serial: more fixes and groundwork for tty changes

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- If a termios change fails due to lack of memory we should copy the
   old settings back over as the device has not changed
 - Note various locking problems
 - kl5kusb105 had various remaining tty flag handling problems
 - Make safe_serial use tty_insert_flip_string not open coded loops
 - set termios speed properly in usb_serial

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Alan Cox
2008-04-08 17:16:06 +01:00
committed by Greg Kroah-Hartman
parent 441b62c1ed
commit a5b6f60c5a
16 changed files with 95 additions and 69 deletions
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31
drivers/usb/serial/cyberjack.c
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@@ -151,7 +151,7 @@ static void cyberjack_shutdown (struct usb_serial *serial)
dbg("%s", __func__);
for (i=0; i < serial->num_ports; ++i) {
for (i = 0; i < serial->num_ports; ++i) {
usb_kill_urb(serial->port[i]->interrupt_in_urb);
/* My special items, the standard routines free my urbs */
kfree(usb_get_serial_port_data(serial->port[i]));
@@ -209,7 +209,7 @@ static int cyberjack_write (struct usb_serial_port *port, const unsigned char *b
if (count == 0) {
dbg("%s - write request of 0 bytes", __func__);
return (0);
return 0;
}
spin_lock_bh(&port->lock);
@@ -223,12 +223,12 @@ static int cyberjack_write (struct usb_serial_port *port, const unsigned char *b
spin_lock_irqsave(&priv->lock, flags);
if( (count+priv->wrfilled)>sizeof(priv->wrbuf) ) {
if( (count+priv->wrfilled) > sizeof(priv->wrbuf) ) {
/* To much data for buffer. Reset buffer. */
priv->wrfilled=0;
spin_unlock_irqrestore(&priv->lock, flags);
priv->wrfilled = 0;
port->write_urb_busy = 0;
return (0);
spin_unlock_irqrestore(&priv->lock, flags);
return 0;
}
/* Copy data */
@@ -269,8 +269,8 @@ static int cyberjack_write (struct usb_serial_port *port, const unsigned char *b
if (result) {
err("%s - failed submitting write urb, error %d", __func__, result);
/* Throw away data. No better idea what to do with it. */
priv->wrfilled=0;
priv->wrsent=0;
priv->wrfilled = 0;
priv->wrsent = 0;
spin_unlock_irqrestore(&priv->lock, flags);
port->write_urb_busy = 0;
return 0;
@@ -282,8 +282,8 @@ static int cyberjack_write (struct usb_serial_port *port, const unsigned char *b
if( priv->wrsent>=priv->wrfilled ) {
dbg("%s - buffer cleaned", __func__);
memset( priv->wrbuf, 0, sizeof(priv->wrbuf) );
priv->wrfilled=0;
priv->wrsent=0;
priv->wrfilled = 0;
priv->wrsent = 0;
}
}
@@ -294,6 +294,7 @@ static int cyberjack_write (struct usb_serial_port *port, const unsigned char *b
static int cyberjack_write_room( struct usb_serial_port *port )
{
/* FIXME: .... */
return CYBERJACK_LOCAL_BUF_SIZE;
}
@@ -314,7 +315,7 @@ static void cyberjack_read_int_callback( struct urb *urb )
usb_serial_debug_data(debug, &port->dev, __func__, urb->actual_length, data);
/* React only to interrupts signaling a bulk_in transfer */
if( (urb->actual_length==4) && (data[0]==0x01) ) {
if( (urb->actual_length == 4) && (data[0] == 0x01) ) {
short old_rdtodo;
/* This is a announcement of coming bulk_ins. */
@@ -450,8 +451,8 @@ static void cyberjack_write_bulk_callback (struct urb *urb)
if (result) {
err("%s - failed submitting write urb, error %d", __func__, result);
/* Throw away data. No better idea what to do with it. */
priv->wrfilled=0;
priv->wrsent=0;
priv->wrfilled = 0;
priv->wrsent = 0;
goto exit;
}
@@ -463,8 +464,8 @@ static void cyberjack_write_bulk_callback (struct urb *urb)
if( (priv->wrsent>=priv->wrfilled) || (priv->wrsent>=blksize) ) {
dbg("%s - buffer cleaned", __func__);
memset( priv->wrbuf, 0, sizeof(priv->wrbuf) );
priv->wrfilled=0;
priv->wrsent=0;
priv->wrfilled = 0;
priv->wrsent = 0;
}
}