This is a note to let you know that I've just added the patch titled
USB: metro-usb: fix tty_flip_buffer_push use
to the 3.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
usb-metro-usb-fix-tty_flip_buffer_push-use.patch
and it can be found in the queue-3.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From b7d28e32c93801d60c1a7a817f774a02b7bdde43 Mon Sep 17 00:00:00 2001
From: Johan Hovold <[email protected]>
Date: Mon, 2 Jul 2012 12:34:24 +0200
Subject: USB: metro-usb: fix tty_flip_buffer_push use
From: Johan Hovold <[email protected]>
commit b7d28e32c93801d60c1a7a817f774a02b7bdde43 upstream.
Do not set low_latency flag at open as tty_flip_buffer_push must not be
called in IRQ context with low_latency set.
Signed-off-by: Johan Hovold <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/usb/serial/metro-usb.c | 8 --------
1 file changed, 8 deletions(-)
--- a/drivers/usb/serial/metro-usb.c
+++ b/drivers/usb/serial/metro-usb.c
@@ -171,14 +171,6 @@ static int metrousb_open(struct tty_stru
metro_priv->throttled = 0;
spin_unlock_irqrestore(&metro_priv->lock, flags);
- /*
- * Force low_latency on so that our tty_push actually forces the data
- * through, otherwise it is scheduled, and with high data rates (like
- * with OHCI) data can get lost.
- */
- if (tty)
- tty->low_latency = 1;
-
/* Clear the urb pipe. */
usb_clear_halt(serial->dev, port->interrupt_in_urb->pipe);
Patches currently in stable-queue which might be from [email protected] are
queue-3.4/usb-metro-usb-fix-tty_flip_buffer_push-use.patch
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