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USB: race fixes for usb-serial, step 3 

- fix an error code returned if a device has been disconnected

Signed-off-by: Oliver Neukum <oneukum@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Oliver Neukum 2007-01-13 07:32:27 +01:00 committed by Greg Kroah-Hartman
parent 4b10f0f3a0
commit 3ff4fd94c8
1 changed files with 2 additions and 1 deletions
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3
drivers/usb/serial/usb-serial.c
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@ -281,7 +281,7 @@ static void serial_close(struct tty_struct *tty, struct file * filp)
static int serial_write (struct tty_struct * tty, const unsigned char *buf, int count) static int serial_write (struct tty_struct * tty, const unsigned char *buf, int count)
{ {
struct usb_serial_port *port = tty->driver_data; struct usb_serial_port *port = tty->driver_data;
int retval = -EINVAL; int retval = -ENODEV;
if (!port || port->serial->dev->state == USB_STATE_NOTATTACHED) if (!port || port->serial->dev->state == USB_STATE_NOTATTACHED)
goto exit; goto exit;
@ -289,6 +289,7 @@ static int serial_write (struct tty_struct * tty, const unsigned char *buf, int
dbg("%s - port %d, %d byte(s)", __FUNCTION__, port->number, count); dbg("%s - port %d, %d byte(s)", __FUNCTION__, port->number, count);
if (!port->open_count) { if (!port->open_count) {
retval = -EINVAL;
dbg("%s - port not opened", __FUNCTION__); dbg("%s - port not opened", __FUNCTION__);
goto exit; goto exit;
} }