Patch "USB: mos7720: delete parport" has been added to the 4.6-stable tree

Patch "USB: mos7720: delete parport" has been added to the 4.6-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    USB: mos7720: delete parport

to the 4.6-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-mos7720-delete-parport.patch
and it can be found in the queue-4.6 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From dcb21ad4385731b7fc3ef39d255685f2f63c8c5d Mon Sep 17 00:00:00 2001
From: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Date: Mon, 30 May 2016 19:16:33 +0530
Subject: USB: mos7720: delete parport

From: Sudip Mukherjee <sudipm.mukherjee@gmail.com>

commit dcb21ad4385731b7fc3ef39d255685f2f63c8c5d upstream.

parport subsystem has introduced parport_del_port() to delete a port
when it is going away. Without parport_del_port() the registered port
will not be unregistered.
To reproduce and verify the error:
Command to be used is : ls /sys/bus/parport/devices
1) without the device attached there is no output as there is no
registered parport.
2) Attach the device, and the command will show "parport0".
3) Remove the device and the command still shows "parport0".
4) Attach the device again and we get "parport1".

With the patch applied:
1) without the device attached there is no output as there is no
registered parport.
2) Attach the device, and the command will show "parport0".
3) Remove the device and there is no output as "parport0" is now
removed.
4) Attach device again to get "parport0" again.

Signed-off-by: Sudip Mukherjee <sudip.mukherjee@codethink.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/usb/serial/mos7720.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/usb/serial/mos7720.c
+++ b/drivers/usb/serial/mos7720.c
@@ -2007,6 +2007,7 @@ static void mos7720_release(struct usb_s
 				    urblist_entry)
 			usb_unlink_urb(urbtrack->urb);
 		spin_unlock_irqrestore(&mos_parport->listlock, flags);
+		parport_del_port(mos_parport->pp);
 
 		kref_put(&mos_parport->ref_count, destroy_mos_parport);
 	}


Patches currently in stable-queue which might be from sudipm.mukherjee@gmail.com are

queue-4.6/usb-mos7720-delete-parport.patch