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: Chuck Ebbert <cebbert@redhat.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/drivers/char/mxser.c b/drivers/char/mxser.c
index 9533f43a30bb0e7bad9873acb85d25cf39e44625..52d953eb30c3d6872eb6e4d3b3710ba7578e272c 100644 (file)
--- a/drivers/char/mxser.c
+++ b/drivers/char/mxser.c
@@ -1048,8 +1048,6 @@ static int mxser_open(struct tty_struct *tty, struct file *filp)
        if (retval)
                return retval;
 
-       /* unmark here for very high baud rate (ex. 921600 bps) used */
-       tty->low_latency = 1;
        return 0;
 }
 

diff --git a/drivers/char/nozomi.c b/drivers/char/nozomi.c
index d6102b644b550d0f9a306b015dd985f642d7e974..574f1c79b6e637ededd5a4708651bc7902aea960 100644 (file)
--- a/drivers/char/nozomi.c
+++ b/drivers/char/nozomi.c
@@ -1591,8 +1591,6 @@ static int ntty_open(struct tty_struct *tty, struct file *file)
 
        /* Enable interrupt downlink for channel */
        if (port->port.count == 1) {
-               /* FIXME: is this needed now ? */
-               tty->low_latency = 1;
                tty->driver_data = port;
                tty_port_tty_set(&port->port, tty);
                DBG1("open: %d", port->token_dl);