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Commit 4d8d4d25 authored by Chuck Ebbert's avatar Chuck Ebbert Committed by Linus Torvalds
Browse files

Remove low_latency flag setting from nozomi and mxser drivers 



The kernel oopses if this flag is set.

[and neither driver should set it as they call tty_flip_buffer_push from IRQ
 paths so have always been buggy]

Signed-off-by: default avatarChuck Ebbert <cebbert@redhat.com>
Signed-off-by: default avatarAlan Cox <alan@linux.intel.com>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 6af9a43d

drivers/char/mxser.c

+0 −2
Original line number Original line Diff line number Diff line
@@ -1048,8 +1048,6 @@ static int mxser_open(struct tty_struct *tty, struct file *filp) 
	if (retval)

	if (retval)

		return retval;

		return retval;





	/* unmark here for very high baud rate (ex. 921600 bps) used */

	tty->low_latency = 1;

	return 0;

	return 0;

}

}

drivers/char/nozomi.c

+0 −2
Original line number Original line Diff line number Diff line
@@ -1591,8 +1591,6 @@ static int ntty_open(struct tty_struct *tty, struct file *file) 




	/* Enable interrupt downlink for channel */

	/* Enable interrupt downlink for channel */

	if (port->port.count == 1) {

	if (port->port.count == 1) {

		/* FIXME: is this needed now ? */

		tty->low_latency = 1;

		tty->driver_data = port;

		tty->driver_data = port;

		tty_port_tty_set(&port->port, tty);

		tty_port_tty_set(&port->port, tty);

		DBG1("open: %d", port->token_dl);

		DBG1("open: %d", port->token_dl);