This is a note to let you know that I've just added the patch titled
tty: serial: 8250_core.c Bug fix for Exar chips.
to the 3.14-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:
tty-serial-8250_core.c-bug-fix-for-exar-chips.patch
and it can be found in the queue-3.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From b790f210fe8423eff881b2a8a93ba5dbc45534d0 Mon Sep 17 00:00:00 2001
From: Michael Welling <mwelling@xxxxxxxx>
Date: Fri, 25 Apr 2014 19:27:48 -0500
Subject: tty: serial: 8250_core.c Bug fix for Exar chips.
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From: Michael Welling <mwelling@xxxxxxxx>
commit b790f210fe8423eff881b2a8a93ba5dbc45534d0 upstream.
The sleep function was updated to put the serial port to sleep only when necessary.
This appears to resolve the errant behavior of the driver as described in
Kernel Bug 61961 – "My Exar Corp. XR17C/D152 Dual PCI UART modem does not
work with 3.8.0".
Signed-off-by: Michael Welling <mwelling@xxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/tty/serial/8250/8250_core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/tty/serial/8250/8250_core.c
+++ b/drivers/tty/serial/8250/8250_core.c
@@ -555,7 +555,7 @@ static void serial8250_set_sleep(struct
*/
if ((p->port.type == PORT_XR17V35X) ||
(p->port.type == PORT_XR17D15X)) {
- serial_out(p, UART_EXAR_SLEEP, 0xff);
+ serial_out(p, UART_EXAR_SLEEP, sleep ? 0xff : 0);
return;
}
Patches currently in stable-queue which might be from mwelling@xxxxxxxx are
queue-3.14/tty-serial-8250_core.c-bug-fix-for-exar-chips.patch
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