This is a note to let you know that I've just added the patch titled
USB: serial: fix interface refcounting
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-serial-fix-interface-refcounting.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 <stable@xxxxxxxxxxxxxxx> know about it.
>From d7971051e4df825e0bc11b995e87bfe86355b8e5 Mon Sep 17 00:00:00 2001
From: Johan Hovold <jhovold@xxxxxxxxx>
Date: Tue, 19 Mar 2013 09:21:09 +0100
Subject: USB: serial: fix interface refcounting
From: Johan Hovold <jhovold@xxxxxxxxx>
commit d7971051e4df825e0bc11b995e87bfe86355b8e5 upstream.
Make sure the interface is not released before our serial device.
Note that drivers are still not allowed to access the interface in
any way that may interfere with another driver that may have gotten
bound to the same interface after disconnect returns.
Signed-off-by: Johan Hovold <jhovold@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/usb/serial/usb-serial.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/usb/serial/usb-serial.c
+++ b/drivers/usb/serial/usb-serial.c
@@ -168,6 +168,7 @@ static void destroy_serial(struct kref *
}
}
+ usb_put_intf(serial->interface);
usb_put_dev(serial->dev);
kfree(serial);
}
@@ -625,7 +626,7 @@ static struct usb_serial *create_serial(
}
serial->dev = usb_get_dev(dev);
serial->type = driver;
- serial->interface = interface;
+ serial->interface = usb_get_intf(interface);
kref_init(&serial->kref);
mutex_init(&serial->disc_mutex);
serial->minor = SERIAL_TTY_NO_MINOR;
Patches currently in stable-queue which might be from jhovold@xxxxxxxxx are
queue-3.4/usb-cdc-acm-fix-device-unregistration.patch
queue-3.4/usb-serial-fix-interface-refcounting.patch
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