linux-kernel - Re: [RFC PATCH net-next 19/22] net: dsa: mt7530: set interrupt register only for MT7530

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Message-ID: <ZELW2plBzam0r8EF@makrotopia.org>
Date:   Fri, 21 Apr 2023 19:32:58 +0100
From:   Daniel Golle <daniel@...rotopia.org>
To:     arinc9.unal@...il.com
Cc:     Sean Wang <sean.wang@...iatek.com>,
        Landen Chao <Landen.Chao@...iatek.com>,
        DENG Qingfang <dqfext@...il.com>, Andrew Lunn <andrew@...n.ch>,
        Florian Fainelli <f.fainelli@...il.com>,
        Vladimir Oltean <olteanv@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        Russell King <linux@...linux.org.uk>,
        Arınç ÜNAL <arinc.unal@...nc9.com>,
        Richard van Schagen <richard@...terhints.com>,
        Richard van Schagen <vschagen@...com>,
        Frank Wunderlich <frank-w@...lic-files.de>,
        erkin.bozoglu@...ont.com, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org
Subject: Re: [RFC PATCH net-next 19/22] net: dsa: mt7530: set interrupt
 register only for MT7530

On Fri, Apr 21, 2023 at 05:36:45PM +0300, arinc9.unal@...il.com wrote:
> From: Arınç ÜNAL <arinc.unal@...nc9.com>
> 
> Setting this register related to interrupts is only needed for the MT7530
> switch. Make an exclusive check to ensure this.
> 
> Signed-off-by: Arınç ÜNAL <arinc.unal@...nc9.com>

Acked-by: Daniel Golle <daniel@...rotopia.org>
Tested-by: Daniel Golle <daniel@...rotopia.org>
(on MT7988 which is the relevant hardware regarding this change,
interrupts still work fine)


> ---
>  drivers/net/dsa/mt7530.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/net/dsa/mt7530.c b/drivers/net/dsa/mt7530.c
> index a66a762cb5db..ac1e3c58aaac 100644
> --- a/drivers/net/dsa/mt7530.c
> +++ b/drivers/net/dsa/mt7530.c
> @@ -2034,7 +2034,7 @@ mt7530_setup_irq(struct mt7530_priv *priv)
>  	}
>  
>  	/* This register must be set for MT7530 to properly fire interrupts */
> -	if (priv->id != ID_MT7531)
> +	if (priv->id == ID_MT7530 || priv->id == ID_MT7621)
>  		mt7530_set(priv, MT7530_TOP_SIG_CTRL, TOP_SIG_CTRL_NORMAL);
>  
>  	ret = request_threaded_irq(priv->irq, NULL, mt7530_irq_thread_fn,
> -- 
> 2.37.2
>