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From: "Russell King (Oracle)" <linux@armlinux.org.uk>
To: Vladimir Oltean <olteanv@gmail.com>
Cc: "Clément Léger" <clement.leger@bootlin.com>,
	"Andrew Lunn" <andrew@lunn.ch>,
	"Vivien Didelot" <vivien.didelot@gmail.com>,
	"Florian Fainelli" <f.fainelli@gmail.com>,
	"David S . Miller" <davem@davemloft.net>,
	"Jakub Kicinski" <kuba@kernel.org>,
	"Paolo Abeni" <pabeni@redhat.com>,
	"Rob Herring" <robh+dt@kernel.org>,
	"Krzysztof Kozlowski" <krzk+dt@kernel.org>,
	"Geert Uytterhoeven" <geert+renesas@glider.be>,
	"Magnus Damm" <magnus.damm@gmail.com>,
	"Heiner Kallweit" <hkallweit1@gmail.com>,
	"Thomas Petazzoni" <thomas.petazzoni@bootlin.com>,
	"Herve Codina" <herve.codina@bootlin.com>,
	"Miquèl Raynal" <miquel.raynal@bootlin.com>,
	"Milan Stevanovic" <milan.stevanovic@se.com>,
	"Jimmy Lalande" <jimmy.lalande@se.com>,
	linux-kernel@vger.kernel.org, devicetree@vger.kernel.org,
	linux-renesas-soc@vger.kernel.org, netdev@vger.kernel.org,
	"Jean-Pierre Geslin" <jean-pierre.geslin@non.se.com>,
	"Phil Edworthy" <phil.edworthy@renesas.com>
Subject: Re: [PATCH net-next 06/12] net: dsa: rzn1-a5psw: add Renesas RZ/N1 advanced 5 port switch driver
Date: Fri, 15 Apr 2022 12:02:14 +0100	[thread overview]
Message-ID: <YllQtjybAOF/ePfG@shell.armlinux.org.uk> (raw)
In-Reply-To: <20220415105503.ztl4zhoyua2qzelt@skbuf>

On Fri, Apr 15, 2022 at 01:55:03PM +0300, Vladimir Oltean wrote:
> I meant that for a DSA switch driver is mandatory to call dsa_switch_shutdown()
> from your ->shutdown method, otherwise subtle things break, sorry for being unclear.
> 
> Please blindly copy-paste the odd pattern that all other DSA drivers use
> in ->shutdown and ->remove (with the platform_set_drvdata(dev, NULL) calls),
> like a normal person :)

Those platform_set_drvdata(, NULL) calls should be killed - the
driver model will set the driver data to NULL after ->remove has
been called - so having drivers also setting the driver data to
NULL is mere duplication.

The only case it would matter is if someone is looking up the device
and then accessing the driver data - and one would hope that's done
with appropriate locking or other guarantees (e.g. driver can never
be unbound once the driver data has been set.)

-- 
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
FTTP is here! 40Mbps down 10Mbps up. Decent connectivity at last!

  reply	other threads:[~2022-04-15 11:02 UTC|newest]

Thread overview: 73+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-04-14 12:22 [PATCH net-next 00/12] add support for Renesas RZ/N1 ethernet subsystem devices Clément Léger
2022-04-14 12:22 ` [PATCH net-next 01/12] net: dsa: add support for Renesas RZ/N1 A5PSW switch tag code Clément Léger
2022-04-14 13:44   ` Vladimir Oltean
2022-04-14 12:22 ` [PATCH net-next 02/12] net: dsa: add Renesas RZ/N1 switch tag driver Clément Léger
2022-04-14 14:22   ` Vladimir Oltean
2022-04-14 14:35     ` Clément Léger
2022-04-14 15:11       ` Vladimir Oltean
2022-04-14 16:18         ` Clément Léger
2022-04-14 16:23           ` Russell King (Oracle)
2022-04-15  7:23             ` Clément Léger
2022-04-14 22:50   ` Andrew Lunn
2022-04-14 12:22 ` [PATCH net-next 03/12] dt-bindings: net: pcs: add bindings for Renesas RZ/N1 MII converter Clément Léger
2022-04-14 18:59   ` Rob Herring
2022-04-19 13:43   ` Rob Herring
2022-04-19 15:00     ` Clément Léger
2022-04-20 20:11       ` Rob Herring
2022-04-21  7:35         ` Clément Léger
2022-04-14 12:22 ` [PATCH net-next 04/12] net: pcs: add Renesas MII converter driver Clément Léger
2022-04-14 12:49   ` Russell King (Oracle)
2022-04-14 15:14     ` Clément Léger
2022-04-20 13:25   ` Geert Uytterhoeven
2022-04-14 12:22 ` [PATCH net-next 05/12] dt-bindings: net: dsa: add bindings for Renesas RZ/N1 Advanced 5 port switch Clément Léger
2022-04-14 18:59   ` Rob Herring
2022-04-27 12:20   ` Geert Uytterhoeven
2022-04-27 12:56     ` Clément Léger
2022-04-14 12:22 ` [PATCH net-next 06/12] net: dsa: rzn1-a5psw: add Renesas RZ/N1 advanced 5 port switch driver Clément Léger
2022-04-14 13:02   ` Russell King (Oracle)
2022-04-15  8:40     ` Clément Léger
2022-04-15  8:52       ` Russell King (Oracle)
2022-04-14 14:47   ` Vladimir Oltean
2022-04-14 17:51     ` Andrew Lunn
2022-04-15  9:34     ` Clément Léger
2022-04-15 10:55       ` Vladimir Oltean
2022-04-15 11:02         ` Russell King (Oracle) [this message]
2022-04-15 11:14           ` Vladimir Oltean
2022-04-15 11:23             ` Russell King (Oracle)
2022-04-15 12:01               ` Vladimir Oltean
2022-04-15 11:05         ` Vladimir Oltean
2022-04-15 12:31           ` Clément Léger
2022-04-15 12:28         ` Clément Léger
2022-04-15 12:41           ` Vladimir Oltean
2022-04-14 17:55   ` Andrew Lunn
2022-04-15 12:33     ` Clément Léger
2022-04-14 12:22 ` [PATCH net-next 07/12] net: dsa: rzn1-a5psw: add statistics support Clément Léger
2022-04-14 17:34   ` Vladimir Oltean
2022-04-15 12:42     ` Clément Léger
2022-04-14 23:16   ` Andrew Lunn
2022-04-15 12:04     ` Clément Léger
2022-04-15 13:37       ` Andrew Lunn
2022-04-15 13:44         ` Clément Léger
2022-04-14 12:22 ` [PATCH net-next 08/12] net: dsa: rzn1-a5psw: add FDB support Clément Léger
2022-04-14 17:51   ` Vladimir Oltean
2022-04-20  8:16     ` Clément Léger
2022-04-20 19:52       ` Vladimir Oltean
2022-04-21  7:38         ` Clément Léger
2022-04-14 12:22 ` [PATCH net-next 09/12] ARM: dts: r9a06g032: describe MII converter Clément Léger
2022-04-14 23:22   ` Andrew Lunn
2022-04-15  8:24     ` Clément Léger
2022-04-15 14:16       ` Andrew Lunn
2022-04-15 14:38         ` Clément Léger
2022-04-15 15:12           ` Andrew Lunn
2022-04-15 15:29             ` Clément Léger
2022-04-15 16:19               ` Andrew Lunn
2022-04-15 16:45                 ` Clément Léger
2022-04-16 13:48                   ` Andrew Lunn
2022-04-19  9:03                     ` Clément Léger
2022-04-19 12:57                       ` Andrew Lunn
2022-04-20 20:16                 ` Rob Herring
2022-04-14 12:22 ` [PATCH net-next 10/12] ARM: dts: r9a06g032: describe GMAC2 Clément Léger
2022-04-21  9:31   ` Geert Uytterhoeven
2022-04-14 12:22 ` [PATCH net-next 11/12] ARM: dts: r9a06g032: describe switch Clément Léger
2022-04-21  9:34   ` Geert Uytterhoeven
2022-04-14 12:22 ` [PATCH net-next 12/12] MAINTAINERS: add Renesas RZ/N1 switch related driver entry Clément Léger

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