netdev - Re: [PATCH] can: rcar_canfd: fix channel specific IRQ handling for RZ/G2L

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Date:   Wed, 2 Nov 2022 02:31:30 +0100
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Biju Das <biju.das.jz@...renesas.com>
Cc:     Wolfgang Grandegger <wg@...ndegger.com>,
        Marc Kleine-Budde <mkl@...gutronix.de>,
        Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>,
        Pavel Machek <pavel@...x.de>, Sasha Levin <sashal@...nel.org>,
        linux-can@...r.kernel.org, netdev@...r.kernel.org,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Chris Paterson <chris.paterson2@...esas.com>,
        linux-renesas-soc@...r.kernel.org, stable@...r.kernel.org
Subject: Re: [PATCH] can: rcar_canfd: fix channel specific IRQ handling for
 RZ/G2L

On Mon, Oct 31, 2022 at 02:43:17PM +0000, Biju Das wrote:
> commit d887087c896881715c1a82f1d4f71fbfe5344ffd upstream.
> 
> RZ/G2L has separate channel specific IRQs for transmit and error
> interrupts. But the IRQ handler processes both channels, even if there
> no interrupt occurred on one of the channels.
> 
> This patch fixes the issue by passing a channel specific context
> parameter instead of global one for the IRQ register and the IRQ
> handler, it just handles the channel which is triggered the interrupt.
> 
> Fixes: 76e9353a80e9 ("can: rcar_canfd: Add support for RZ/G2L family")
> Signed-off-by: Biju Das <biju.das.jz@...renesas.com>
> Link: https://lore.kernel.org/all/20221025155657.1426948-3-biju.das.jz@bp.renesas.com
> Cc: stable@...r.kernel.org
> [mkl: adjust commit message]
> Signed-off-by: Marc Kleine-Budde <mkl@...gutronix.de>
> [biju: fixed the conflicts manually]
> Signed-off-by: Biju Das <biju.das.jz@...renesas.com>
> ---
> Resending to 5.15 with conflicts[1] fixed
> [1] https://lore.kernel.org/stable/1667194217249235@kroah.com/T/#u
> ---
>  drivers/net/can/rcar/rcar_canfd.c | 18 +++++++-----------
>  1 file changed, 7 insertions(+), 11 deletions(-)

Now queued up, thanks.

greg k-h