Commit 3ff4fd94 authored by Oliver Neukum's avatar Oliver Neukum Committed by Greg Kroah-Hartman
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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: default avatarOliver Neukum <oneukum@suse.de>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 4b10f0f3

drivers/usb/serial/usb-serial.c

+2 −1
Original line number Diff line number Diff line
@@ -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)

{

	struct usb_serial_port *port = tty->driver_data;

	int retval = -EINVAL;

	int retval = -ENODEV;



	if (!port || port->serial->dev->state == USB_STATE_NOTATTACHED)

		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);



	if (!port->open_count) {

		retval = -EINVAL;

		dbg("%s - port not opened", __FUNCTION__);

		goto exit;

	}

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