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From: "Russell King (Oracle)" <linux@armlinux.org.uk>
To: Alexander Stein <alexander.stein@ew.tq-group.com>
Cc: Alexandre Torgue <alexandre.torgue@foss.st.com>,
	Jose Abreu <joabreu@synopsys.com>, Andrew Lunn <andrew@lunn.ch>,
	"David S. Miller" <davem@davemloft.net>,
	Eric Dumazet <edumazet@google.com>,
	Feiyang Chen <chenfeiyang@loongson.cn>,
	Heiner Kallweit <hkallweit1@gmail.com>,
	Jakub Kicinski <kuba@kernel.org>,
	linux-arm-kernel@lists.infradead.org,
	linux-stm32@st-md-mailman.stormreply.com,
	Maxime Coquelin <mcoquelin.stm32@gmail.com>,
	netdev@vger.kernel.org, Paolo Abeni <pabeni@redhat.com>,
	Shawn Guo <shawnguo@kernel.org>,
	Sascha Hauer <s.hauer@pengutronix.de>,
	Pengutronix Kernel Team <kernel@pengutronix.de>,
	Fabio Estevam <festevam@gmail.com>,
	NXP Linux Team <linux-imx@nxp.com>,
	Vladimir Zapolskiy <vz@mleia.com>,
	Emil Renner Berthing <kernel@esmil.dk>,
	Samin Guo <samin.guo@starfivetech.com>,
	Chen-Yu Tsai <wens@csie.org>,
	Jernej Skrabec <jernej.skrabec@gmail.com>,
	Samuel Holland <samuel@sholland.org>,
	Matthias Brugger <matthias.bgg@gmail.com>,
	AngeloGioacchino Del Regno
	<angelogioacchino.delregno@collabora.com>,
	linux-sunxi@lists.linux.dev, linux-mediatek@lists.infradead.org
Subject: Re: [PATCH net-next] net: stmmac: clarify difference between "interface" and "phy_interface"
Date: Tue, 29 Aug 2023 14:10:40 +0100	[thread overview]
Message-ID: <ZO3uUIFgtkIHHqjL@shell.armlinux.org.uk> (raw)
In-Reply-To: <12274852.O9o76ZdvQC@steina-w>

On Tue, Aug 29, 2023 at 02:38:33PM +0200, Alexander Stein wrote:
> > diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
> > b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c index
> > ff330423ee66..35f4b1484029 100644
> > --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
> > +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
> > @@ -419,9 +419,9 @@ stmmac_probe_config_dt(struct platform_device *pdev, u8
> > *mac) return ERR_PTR(phy_mode);
> > 
> >  	plat->phy_interface = phy_mode;
> > -	plat->interface = stmmac_of_get_mac_mode(np);
> > -	if (plat->interface < 0)
> > -		plat->interface = plat->phy_interface;
> > +	plat->mac_interface = stmmac_of_get_mac_mode(np);
> > +	if (plat->mac_interface < 0)
> 
> This check is never true as mac_interface is now an unsigned enum 
> (phy_interface_t). Thus mac_interface is not set to phy_interface resulting in 
> an invalid mac_interface. My platform (arch/arm64/boot/dts/freescale/imx8mp-
> tqma8mpql-mba8mpxl.dts) fails to probe now.

Thanks for catching that. Does this patch fix it for you?

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
index 231152ee5a32..0451d2c2aa43 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
@@ -420,9 +420,9 @@ stmmac_probe_config_dt(struct platform_device *pdev, u8 *mac)
 		return ERR_PTR(phy_mode);
 
 	plat->phy_interface = phy_mode;
-	plat->interface = stmmac_of_get_mac_mode(np);
-	if (plat->interface < 0)
-		plat->interface = plat->phy_interface;
+
+	rc = stmmac_of_get_mac_mode(np);
+	plat->interface = rc < 0 ? plat->phy_interface : rc;
 
 	/* Some wrapper drivers still rely on phy_node. Let's save it while
 	 * they are not converted to phylink. */

-- 
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
FTTP is here! 80Mbps down 10Mbps up. Decent connectivity at last!


WARNING: multiple messages have this Message-ID (diff)
From: "Russell King (Oracle)" <linux@armlinux.org.uk>
To: Alexander Stein <alexander.stein@ew.tq-group.com>
Cc: Alexandre Torgue <alexandre.torgue@foss.st.com>,
	Jose Abreu <joabreu@synopsys.com>, Andrew Lunn <andrew@lunn.ch>,
	"David S. Miller" <davem@davemloft.net>,
	Eric Dumazet <edumazet@google.com>,
	Feiyang Chen <chenfeiyang@loongson.cn>,
	Heiner Kallweit <hkallweit1@gmail.com>,
	Jakub Kicinski <kuba@kernel.org>,
	linux-arm-kernel@lists.infradead.org,
	linux-stm32@st-md-mailman.stormreply.com,
	Maxime Coquelin <mcoquelin.stm32@gmail.com>,
	netdev@vger.kernel.org, Paolo Abeni <pabeni@redhat.com>,
	Shawn Guo <shawnguo@kernel.org>,
	Sascha Hauer <s.hauer@pengutronix.de>,
	Pengutronix Kernel Team <kernel@pengutronix.de>,
	Fabio Estevam <festevam@gmail.com>,
	NXP Linux Team <linux-imx@nxp.com>,
	Vladimir Zapolskiy <vz@mleia.com>,
	Emil Renner Berthing <kernel@esmil.dk>,
	Samin Guo <samin.guo@starfivetech.com>,
	Chen-Yu Tsai <wens@csie.org>,
	Jernej Skrabec <jernej.skrabec@gmail.com>,
	Samuel Holland <samuel@sholland.org>,
	Matthias Brugger <matthias.bgg@gmail.com>,
	AngeloGioacchino Del Regno
	<angelogioacchino.delregno@collabora.com>,
	linux-sunxi@lists.linux.dev, linux-mediatek@lists.infradead.org
Subject: Re: [PATCH net-next] net: stmmac: clarify difference between "interface" and "phy_interface"
Date: Tue, 29 Aug 2023 14:10:40 +0100	[thread overview]
Message-ID: <ZO3uUIFgtkIHHqjL@shell.armlinux.org.uk> (raw)
In-Reply-To: <12274852.O9o76ZdvQC@steina-w>

On Tue, Aug 29, 2023 at 02:38:33PM +0200, Alexander Stein wrote:
> > diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
> > b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c index
> > ff330423ee66..35f4b1484029 100644
> > --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
> > +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
> > @@ -419,9 +419,9 @@ stmmac_probe_config_dt(struct platform_device *pdev, u8
> > *mac) return ERR_PTR(phy_mode);
> > 
> >  	plat->phy_interface = phy_mode;
> > -	plat->interface = stmmac_of_get_mac_mode(np);
> > -	if (plat->interface < 0)
> > -		plat->interface = plat->phy_interface;
> > +	plat->mac_interface = stmmac_of_get_mac_mode(np);
> > +	if (plat->mac_interface < 0)
> 
> This check is never true as mac_interface is now an unsigned enum 
> (phy_interface_t). Thus mac_interface is not set to phy_interface resulting in 
> an invalid mac_interface. My platform (arch/arm64/boot/dts/freescale/imx8mp-
> tqma8mpql-mba8mpxl.dts) fails to probe now.

Thanks for catching that. Does this patch fix it for you?

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
index 231152ee5a32..0451d2c2aa43 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
@@ -420,9 +420,9 @@ stmmac_probe_config_dt(struct platform_device *pdev, u8 *mac)
 		return ERR_PTR(phy_mode);
 
 	plat->phy_interface = phy_mode;
-	plat->interface = stmmac_of_get_mac_mode(np);
-	if (plat->interface < 0)
-		plat->interface = plat->phy_interface;
+
+	rc = stmmac_of_get_mac_mode(np);
+	plat->interface = rc < 0 ? plat->phy_interface : rc;
 
 	/* Some wrapper drivers still rely on phy_node. Let's save it while
 	 * they are not converted to phylink. */

-- 
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
FTTP is here! 80Mbps down 10Mbps up. Decent connectivity at last!

_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

  reply	other threads:[~2023-08-29 13:11 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-08-26 10:02 [PATCH net-next] net: stmmac: clarify difference between "interface" and "phy_interface" Russell King (Oracle)
2023-08-26 10:02 ` Russell King (Oracle)
2023-08-28 20:00 ` patchwork-bot+netdevbpf
2023-08-28 20:00   ` patchwork-bot+netdevbpf
2023-08-29 12:38 ` Alexander Stein
2023-08-29 12:38   ` Alexander Stein
2023-08-29 13:10   ` Russell King (Oracle) [this message]
2023-08-29 13:10     ` Russell King (Oracle)
2023-08-29 13:20     ` Alexander Stein
2023-08-29 13:20       ` Alexander Stein

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