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From: Andrew Lunn <andrew@lunn.ch>
To: Maxime Chevallier <maxime.chevallier@bootlin.com>
Cc: davem@davemloft.net, Rob Herring <robh+dt@kernel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>,
	netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
	devicetree@vger.kernel.org, thomas.petazzoni@bootlin.com,
	Florian Fainelli <f.fainelli@gmail.com>,
	Heiner Kallweit <hkallweit1@gmail.com>,
	Russell King <linux@armlinux.org.uk>,
	linux-arm-kernel@lists.infradead.org,
	Vladimir Oltean <vladimir.oltean@nxp.com>,
	Luka Perkov <luka.perkov@sartura.hr>,
	Robert Marko <robert.marko@sartura.hr>
Subject: Re: [PATCH net-next v5 2/5] net: ipqess: introduce the Qualcomm IPQESS driver
Date: Fri, 21 Oct 2022 16:39:40 +0200	[thread overview]
Message-ID: <Y1KvLP39QFyvbARB@lunn.ch> (raw)
In-Reply-To: <20221021124556.100445-3-maxime.chevallier@bootlin.com>

> +static int ipqess_axi_remove(struct platform_device *pdev)
> +{
> +	const struct net_device *netdev = platform_get_drvdata(pdev);
> +	struct ipqess *ess = netdev_priv(netdev);
> +
> +	ipqess_hw_stop(ess);
> +	unregister_netdev(ess->netdev);

Should the unregister come first? What happens if the network stack
tries to use the interface during/after ipqess_hw_stop()? It just
seems like it would be safer to first unregister the interface, and
then stop it?

> +struct ipqess_tx_desc {
> +	__le16  len;
> +	__le16  svlan_tag;
> +	__le32  word1;
> +	__le32  addr;
> +	__le32  word3;
> +} __aligned(16) __packed;
> +
> +struct ipqess_rx_desc {
> +	u16 rrd0;
> +	u16 rrd1;
> +	u16 rrd2;
> +	u16 rrd3;
> +	u16 rrd4;
> +	u16 rrd5;
> +	u16 rrd6;
> +	u16 rrd7;
> +} __aligned(16) __packed;

The TX descriptor is little endian, but the RX descriptor is host
endian?

	Andrew

  parent reply	other threads:[~2022-10-21 14:40 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-10-21 12:45 [PATCH net-next v5 0/5] [PATCH net-next v4 0/5] net: ipqess: introduce Qualcomm IPQESS driver Maxime Chevallier
2022-10-21 12:45 ` [PATCH net-next v5 1/5] net: dt-bindings: Introduce the Qualcomm IPQESS Ethernet controller Maxime Chevallier
2022-10-21 13:33   ` Krzysztof Kozlowski
2022-10-21 14:30   ` Vladimir Oltean
2022-10-21 14:53   ` Rob Herring
2022-10-21 12:45 ` [PATCH net-next v5 2/5] net: ipqess: introduce the Qualcomm IPQESS driver Maxime Chevallier
2022-10-21 13:38   ` Krzysztof Kozlowski
2022-10-21 14:39   ` Andrew Lunn [this message]
2022-10-21 17:49   ` kernel test robot
2022-10-21 17:59   ` kernel test robot
2022-10-21 12:45 ` [PATCH net-next v5 3/5] net: dsa: add out-of-band tagging protocol Maxime Chevallier
2022-10-21 14:01   ` Vladimir Oltean
2022-10-21 14:43   ` Andrew Lunn
2022-10-21 14:46   ` Andrew Lunn
2022-10-21 19:51   ` kernel test robot
2022-10-21 12:45 ` [PATCH net-next v5 4/5] net: ipqess: Add out-of-band DSA tagging support Maxime Chevallier
2022-10-21 14:12   ` Vladimir Oltean
2022-10-21 12:45 ` [PATCH net-next v5 5/5] ARM: dts: qcom: ipq4019: Add description for the IPQESS Ethernet controller Maxime Chevallier
2022-10-21 14:20   ` Vladimir Oltean
2022-10-21 14:29     ` Krzysztof Kozlowski

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