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Commit ca85485c authored by Paul Fulghum's avatar Paul Fulghum Committed by Greg Kroah-Hartman
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[PATCH] USB: console: prevent ENODEV on node 



Prevent ENODEV on a /dev/ttyUSBx, used as a USB-serial console.

From: Paul Fulghum <paulkf@microgate.com>
Signed-off-by: default avatarGuennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 57845bd1

drivers/usb/serial/usb-serial.c

+5 −5
Original line number Diff line number Diff line
@@ -201,13 +201,13 @@ static int serial_open (struct tty_struct *tty, struct file * filp) 
	 

	++port->open_count;



	if (port->open_count == 1) {



	/* set up our port structure making the tty driver

	 * remember our port object, and us it */

	tty->driver_data = port;

	port->tty = tty;



	if (port->open_count == 1) {



		/* lock this module before we call it

		 * this may fail, which means we must bail out,

		 * safe because we are called with BKL held */