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USB: fix interaction between different interfaces in an "Option" usb device
author
Miguel Angel Alvarez
<ma.alvarez@ziv.es>
Thu, 14 Dec 2006 18:49:35 +0000
(19:49 +0100)
committer
Greg Kroah-Hartman
<gregkh@suse.de>
Fri, 5 Jan 2007 20:19:08 +0000
(12:19 -0800)
Just the serial port in the first interface should control DTR and RTS
lines. This way, the closing of the rest of the ports does not produce a=
hangup in the communication.
Signed-off-by: Miguel Angel Alvarez <ma.alvarez@ziv.es>
Signed-off-by: Matthias Urlichs <matthias@urlichs.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
drivers/usb/serial/option.c
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diff --git
a/drivers/usb/serial/option.c
b/drivers/usb/serial/option.c
index 819266b7e2f8e3368ddb6f20201918d44a14a889..5ca04e82ea196a491f9b20c1f1cd3e82c9c35eeb 100644
(file)
--- a/
drivers/usb/serial/option.c
+++ b/
drivers/usb/serial/option.c
@@
-625,6
+625,9
@@
static int option_send_setup(struct usb_serial_port *port)
dbg("%s", __FUNCTION__);
+ if (port->number != 0)
+ return 0;
+
portdata = usb_get_serial_port_data(port);
if (port->tty) {
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