Re: FAILED: patch "[PATCH] USB: serial: keyspan: handle unbound ports" failed to apply to 4.9-stable tree

[Greg KH <gregkh@linuxfoundation.org>]

On Sun, Jan 19, 2020 at 10:47:33AM -0500, Sasha Levin wrote:
> On Sun, Jan 19, 2020 at 02:41:16PM +0100, gregkh@linuxfoundation.org wrote:
> > 
> > The patch below does not apply to the 4.9-stable tree.
> > If someone wants it applied there, or to any other stable or longterm
> > tree, then please email the backport, including the original git commit
> > id to <stable@vger.kernel.org>.
> > 
> > thanks,
> > 
> > greg k-h
> > 
> > ------------------ original commit in Linus's tree ------------------
> > 
> > > From 3018dd3fa114b13261e9599ddb5656ef97a1fa17 Mon Sep 17 00:00:00 2001
> > From: Johan Hovold <johan@kernel.org>
> > Date: Fri, 17 Jan 2020 10:50:25 +0100
> > Subject: [PATCH] USB: serial: keyspan: handle unbound ports
> > 
> > Check for NULL port data in the control URB completion handlers to avoid
> > dereferencing a NULL pointer in the unlikely case where a port device
> > isn't bound to a driver (e.g. after an allocation failure on port
> > probe()).
> > 
> > Fixes: 0ca1268e109a ("USB Serial Keyspan: add support for USA-49WG & USA-28XG")
> > Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
> > Cc: stable <stable@vger.kernel.org>
> > Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> > Signed-off-by: Johan Hovold <johan@kernel.org>
> 
> Grabbing the prerequisite for the other USB patch also resolved the
> conflict here, now queued for 4.9 and 4.4.

Thanks for this and the other fixups you're doing here, much
appreciated.

greg k-h