linux-kernel - Re: [net-next v4 1/3] net: ethernet: mtk_eth

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Message-ID: <20250619123852.GM1699@horms.kernel.org>
Date: Thu, 19 Jun 2025 13:38:52 +0100
From: Simon Horman <horms@...nel.org>
To: Frank Wunderlich <frank-w@...lic-files.de>
Cc: Frank Wunderlich <linux@...web.de>, Felix Fietkau <nbd@....name>,
	Sean Wang <sean.wang@...iatek.com>,
	Lorenzo Bianconi <lorenzo@...nel.org>,
	Andrew Lunn <andrew+netdev@...n.ch>,
	"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>,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-mediatek@...ts.infradead.org,
	Daniel Golle <daniel@...rotopia.org>, arinc.unal@...nc9.com
Subject: Re: [net-next v4 1/3] net: ethernet: mtk_eth_soc: support named IRQs

On Thu, Jun 19, 2025 at 09:44:34AM +0200, Frank Wunderlich wrote:
> Am 16. Juni 2025 10:07:34 MESZ schrieb Frank Wunderlich <linux@...web.de>:
> >From: Frank Wunderlich <frank-w@...lic-files.de>
> >
> >Add named interrupts and keep index based fallback for exiting devicetrees.
> >
> >Currently only rx and tx IRQs are defined to be used with mt7988, but
> >later extended with RSS/LRO support.
> >
> >Signed-off-by: Frank Wunderlich <frank-w@...lic-files.de>
> >Reviewed-by: Simon Horman <horms@...nel.org>
> >---
> >v2:
> >- move irqs loading part into own helper function
> >- reduce indentation
> >- place mtk_get_irqs helper before the irq_handler (note for simon)
> >---
> > drivers/net/ethernet/mediatek/mtk_eth_soc.c | 39 +++++++++++++++------
> > 1 file changed, 28 insertions(+), 11 deletions(-)
> >
> >diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
> >index b76d35069887..81ae8a6fe838 100644
> >--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
> >+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
> >@@ -3337,6 +3337,30 @@ static void mtk_tx_timeout(struct net_device *dev, unsigned int txqueue)
> > 	schedule_work(&eth->pending_work);
> > }
> > 
> >+static int mtk_get_irqs(struct platform_device *pdev, struct mtk_eth *eth)
> >+{
> >+	int i;
> >+
> >+	eth->irq[1] = platform_get_irq_byname(pdev, "tx");
> >+	eth->irq[2] = platform_get_irq_byname(pdev, "rx");
> 
> Hi Simon,
> 
> I got information that reserved frame-engine 
>  irqs are not unusable and have no fixed
>  meaning. So i would add fe0..fe3 in
>  dts+binding and change these names from
> tx/rx to fe1 and fe2.
> 
> Can i keep your RB here?

Since the meaning is changing somewhat maybe best to drop the RB.
I'll look out for the new version to review.