linux-kernel - Re: [PATCH 04/19] serial: sh-sci: Fix deadlock during RSCI FIFO overrun error

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Message-ID: <2025102826-appraisal-tables-47b6@gregkh>
Date: Tue, 28 Oct 2025 09:40:35 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: Biju Das <biju.das.jz@...renesas.com>
Cc: Jiri Slaby <jirislaby@...nel.org>,
	Geert Uytterhoeven <geert+renesas@...der.be>,
	Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>,
	Wolfram Sang <wsa+renesas@...g-engineering.com>,
	Claudiu Beznea <claudiu.beznea.uj@...renesas.com>,
	Nam Cao <namcao@...utronix.de>, linux-kernel@...r.kernel.org,
	linux-serial@...r.kernel.org, Biju Das <biju.das.au@...il.com>,
	linux-renesas-soc@...r.kernel.org, stable@...nel.org
Subject: Re: [PATCH 04/19] serial: sh-sci: Fix deadlock during RSCI FIFO
 overrun error

On Mon, Oct 27, 2025 at 03:45:51PM +0000, Biju Das wrote:
> On RSCI IP, a deadlock occurs during a FIFO overrun error, as it uses a
> different register to clear the FIFO overrun error status.
> 
> Cc: stable@...nel.org
> Fixes: 0666e3fe95ab ("serial: sh-sci: Add support for RZ/T2H SCI")
> Signed-off-by: Biju Das <biju.das.jz@...renesas.com>

Why is patch 4/19 the only one marked for stable backports?  That feels
really wrong as that will not show up until after 6.19-rc1 is out, AND
the dependant patches will also not be backported.

Please split up patch series to have "things that must be merged now"
separate from "these are for the next -rc1 release"

thanks,

greg k-h