This is a note to let you know that I've just added the patch titled
USB: cp210x: initialise baud rate at open
to the 3.0-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-cp210x-initialise-baud-rate-at-open.patch
and it can be found in the queue-3.0 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From cdc32fd6f7b2b2580d7f1b74563f888e4dd9eb8a Mon Sep 17 00:00:00 2001
From: Johan Hovold <[email protected]>
Date: Mon, 16 Jan 2012 00:36:52 +0100
Subject: USB: cp210x: initialise baud rate at open
From: Johan Hovold <[email protected]>
commit cdc32fd6f7b2b2580d7f1b74563f888e4dd9eb8a upstream.
The newer cp2104 devices require the baud rate to be initialised after
power on. Make sure it is set when port is opened.
Signed-off-by: Johan Hovold <[email protected]>
Cc: Preston Fick <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/usb/serial/cp210x.c | 4 ++++
1 file changed, 4 insertions(+)
--- a/drivers/usb/serial/cp210x.c
+++ b/drivers/usb/serial/cp210x.c
@@ -408,6 +408,10 @@ static int cp210x_open(struct tty_struct
/* Configure the termios structure */
cp210x_get_termios(tty, port);
+ /* The baud rate must be initialised on cp2104 */
+ if (tty)
+ cp210x_change_speed(tty, port, NULL);
+
return usb_serial_generic_open(tty, port);
}
Patches currently in stable-queue which might be from [email protected] are
queue-3.0/usb-cp210x-call-generic-open-last-in-open.patch
queue-3.0/usb-cp210x-fix-cp2104-baudrate-usage.patch
queue-3.0/usb-cp210x-fix-up-set_termios-variables.patch
queue-3.0/usb-cp210x-do-not-map-baud-rates-to-b0.patch
queue-3.0/usb-cp210x-allow-more-baud-rates-above-1mbaud.patch
queue-3.0/usb-cp210x-initialise-baud-rate-at-open.patch
queue-3.0/usb-cp210x-clean-up-refactor-and-document-speed-handling.patch
queue-3.0/usb-ftdi_sio-fix-tiocsserial-baud_base-handling.patch
queue-3.0/usb-ftdi_sio-fix-initial-baud-rate.patch
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