From: Andrew Lunn <andrew@lunn.ch>
To: Daniel Golle <daniel@makrotopia.org>
Cc: linux-mediatek@lists.infradead.org, netdev@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, Felix Fietkau <nbd@nbd.name>,
John Crispin <john@phrozen.org>,
Sean Wang <sean.wang@mediatek.com>,
Mark Lee <Mark-MC.Lee@mediatek.com>,
"David S. Miller" <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>,
Matthias Brugger <matthias.bgg@gmail.com>,
Russell King <linux@armlinux.org.uk>,
Michael Lee <igvtee@gmail.com>,
Heiner Kallweit <hkallweit1@gmail.com>
Subject: Re: [PATCH v10 1/3] net: ethernet: mtk_eth_soc: fix return value and refactor MDIO ops
Date: Sun, 2 Jan 2022 17:43:32 +0100 [thread overview]
Message-ID: <YdHWNIcr9AzFG7oN@lunn.ch> (raw)
In-Reply-To: <YdHJQhG3vmEJ4ia6@makrotopia.org>
\x17> +static int _mtk_mdio_write(struct mtk_eth *eth, u32 phy_addr, u32 phy_reg,
> + u32 write_data)
> {
> if (mtk_mdio_busy_wait(eth))
> - return -1;
> -
> - write_data &= 0xffff;
> + return -EBUSY;
-ETIMEDOUT would be more normal.
I would probably also change mtk_mdio_busy_wait() so that it either
returned 0, or -ETIMEDOUT. That is the general pattern in Linux,
return 0 on success, or a negative error code. Returning -1 is an
invitation for trouble.
The code would then become
ret = mtk_mdio_busy_wait(eth);
if (ret < 0)
return ret;
which is a very common pattern in Linux.
Andrew
next prev parent reply other threads:[~2022-01-02 16:44 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-26 21:29 [PATCH] net: ethernet: mtk_eth_soc: implement Clause 45 MDIO access Daniel Golle
2021-12-26 21:51 ` Andrew Lunn
2021-12-26 21:57 ` Russell King (Oracle)
2021-12-26 22:26 ` Andrew Lunn
2021-12-26 23:23 ` [PATCH v2] " Daniel Golle
2021-12-27 16:09 ` [PATCH v3] " Daniel Golle
2021-12-27 16:21 ` Russell King (Oracle)
2021-12-27 17:51 ` [PATCH v4 0/2] net: mtk_soc_eth: " Daniel Golle
2021-12-27 17:51 ` [PATCH v4 1/2] net: mtk_eth_soc: fix return value of MDIO operations Daniel Golle
2021-12-27 17:52 ` [PATCH v4 2/2] net: ethernet: mtk_eth_soc: implement Clause 45 MDIO access Daniel Golle
2021-12-27 18:30 ` [PATCH v5 0/2] " Daniel Golle
2021-12-27 18:31 ` [PATCH v5 1/2] net: ethernet: mtk_eth_soc: fix return value of MDIO ops Daniel Golle
2021-12-27 18:31 ` [PATCH v5 2/2] net: ethernet: mtk_eth_soc: implement Clause 45 MDIO access Daniel Golle
2021-12-28 0:07 ` [PATCH v6 0/2] " Daniel Golle
2021-12-28 0:08 ` [PATCH v6 1/2] net: ethernet: mtk_eth_soc: fix return value of MDIO ops Daniel Golle
2021-12-28 0:09 ` [PATCH v6 2/2] net: ethernet: mtk_eth_soc: implement Clause 45 MDIO access Daniel Golle
2021-12-28 1:10 ` [PATCH v7 0/2] net: ethernet: mtk_soc_eth: " Daniel Golle
2021-12-28 1:43 ` Jakub Kicinski
2021-12-28 1:10 ` [PATCH v7 1/2] net: ethernet: mtk_eth_soc: fix return value of MDIO ops Daniel Golle
2021-12-28 1:11 ` [PATCH v7 2/2] net: ethernet: mtk_eth_soc: implement Clause 45 MDIO access Daniel Golle
2021-12-28 11:46 ` Russell King (Oracle)
2021-12-28 21:03 ` [PATCH v8 0/3] net: ethernet: mtk_eth_soc: refactoring and Clause 45 Daniel Golle
2021-12-28 21:05 ` [PATCH v8 1/3] net: mdio: add helpers to extract clause 45 regad and devad fields Daniel Golle
2021-12-28 21:05 ` [PATCH v8 2/3] net: ethernet: mtk_eth_soc: fix return value and refactor MDIO ops Daniel Golle
2021-12-28 21:05 ` [PATCH v8 3/3] net: ethernet: mtk_eth_soc: implement Clause 45 MDIO access Daniel Golle
2021-12-31 20:52 ` [PATCH v9 0/3] net: ethernet: mtk_eth_soc: refactoring and Clause 45 Daniel Golle
2021-12-31 20:54 ` [PATCH v9 2/3] net: ethernet: mtk_eth_soc: fix return value and refactor MDIO ops Daniel Golle
2021-12-31 20:54 ` [PATCH v9 3/3] net: ethernet: mtk_eth_soc: implement Clause 45 MDIO access Daniel Golle
2021-12-31 20:57 ` [PATCH v9 1/3] net: mdio: add helpers to extract clause 45 regad and devad fields Daniel Golle
2022-01-01 17:20 ` Andrew Lunn
2022-01-02 15:47 ` [PATCH v10 0/3] net: ethernet: mtk_eth_soc: refactoring and Clause 45 Daniel Golle
2022-01-02 15:51 ` Russell King (Oracle)
2022-01-02 15:48 ` [PATCH v10 1/3] net: ethernet: mtk_eth_soc: fix return value and refactor MDIO ops Daniel Golle
2022-01-02 16:43 ` Andrew Lunn [this message]
2022-01-02 15:48 ` [PATCH v10 2/3] net: mdio: add helpers to extract clause 45 regad and devad fields Daniel Golle
2022-01-02 16:44 ` Andrew Lunn
2022-01-02 15:49 ` [PATCH v10 3/3] net: ethernet: mtk_eth_soc: implement Clause 45 MDIO access Daniel Golle
[not found] ` <Yc9tk6IZ0ldqHx4Y@makrotopia.org>
2022-01-01 17:18 ` [PATCH v9 1/3] net: mdio: add helpers to extract clause 45 regad and devad fields Andrew Lunn
2022-01-01 17:41 ` Daniel Golle
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