Re: patch "serial: sh-sci: Initialize spinlock for uart console" added to tty-linus

["gregkh@linuxfoundation.org" <gregkh@linuxfoundation.org>]

On Fri, Jul 03, 2020 at 08:53:18AM +0000, Prabhakar Mahadev Lad wrote:
> Hi Greg,
> 
> > -----Original Message-----
> > From: gregkh@linuxfoundation.org <gregkh@linuxfoundation.org>
> > Sent: 03 July 2020 09:41
> > To: Prabhakar Mahadev Lad <prabhakar.mahadev-lad.rj@bp.renesas.com>; Biju Das <biju.das.jz@bp.renesas.com>;
> > gregkh@linuxfoundation.org; stable@vger.kernel.org
> > Subject: patch "serial: sh-sci: Initialize spinlock for uart console" added to tty-linus
> >
> >
> > This is a note to let you know that I've just added the patch titled
> >
> >     serial: sh-sci: Initialize spinlock for uart console
> >
> > to my tty git tree which can be found at
> >     git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git
> > in the tty-linus branch.
> >
> > The patch will show up in the next release of the linux-next tree
> > (usually sometime within the next 24 hours during the week.)
> >
> > The patch will hopefully also be merged in Linus's tree for the
> > next -rc kernel release.
> >
> > If you have any questions about this process, please let me know.
> >
> It looks like it's a regression in serial_core.c [1] as Geert pointed out [2]. Please drop this patch until we come to a conclusion.
> 
> [1] https://www.spinics.net/lists/linux-serial/msg37119.html
> [2] https://patchwork.kernel.org/patch/11636731/

We have had MANY patches for individual drivers to fix up the issue with
that serial_core patch.  I think, and hope, they are all now caught.  If
not, please let us know, but for now, this patch is needed, so I'll keep
it.

thanks,

greg k-h