linux-kernel - Re: [PATCH v2] sound/hda: Add NULL check to component match callback function

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Message-ID: <YkXo/8fEHmKxDM2S@kroah.com>
Date:   Thu, 31 Mar 2022 19:46:39 +0200
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Benson Leung <bleung@...gle.com>
Cc:     Won Chung <wonchung@...gle.com>, Takashi Iwai <tiwai@...e.de>,
        Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>,
        Benson Leung <bleung@...omium.org>,
        Prashant Malani <pmalani@...omium.org>,
        linux-kernel@...r.kernel.org, stable@...r.kernel.org
Subject: Re: [PATCH v2] sound/hda: Add NULL check to component match callback
 function

On Thu, Mar 31, 2022 at 10:33:57AM -0700, Benson Leung wrote:
> Hi Greg,
> 
> On Thu, Mar 31, 2022 at 07:18:00PM +0200, Greg KH wrote:
> > On Thu, Mar 31, 2022 at 09:58:43AM -0700, Won Chung wrote:
> > > > So is this actually triggering on 5.17 right now?  Or is it due to some
> > > > other not-applied changes you are testing at the moment?
> > > >
> > > > confused,
> > > >
> > > > greg k-h
> > > 
> > > Hi Greg,
> > > 
> > > I believe it is not causing an issue in 5.17 at the moment. It is
> > > triggered when we try to apply new changes and test it locally.
> > > (registering a component for usb4_port)
> > 
> > Then why would it ever be needed to be backported to a stable kernel?
> > 
> > Please be more careful.
> > 
> > greg k-h
> 
> Sorry about that. I gave Won bad advice to cc stable. You're right, it will
> only be relevant when a future patch lands in usb4.

It isn't even relevant now, please only worry about this when you have
your patches ready for submission that causes this breakage.

thanks,

greg k-h