From: Andrew Lunn <andrew@lunn.ch>
To: Ansuel Smith <ansuelsmth@gmail.com>
Cc: Florian Fainelli <f.fainelli@gmail.com>,
Vivien Didelot <vivien.didelot@gmail.com>,
Vladimir Oltean <olteanv@gmail.com>,
"David S. Miller" <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>,
Russell King <linux@armlinux.org.uk>,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [RFC PATCH net-next v3 06/20] net: dsa: qca8k: handle error with qca8k_write operation
Date: Wed, 5 May 2021 02:41:24 +0200 [thread overview]
Message-ID: <YJHptHS8eN2gGaRd@lunn.ch> (raw)
In-Reply-To: <20210504222915.17206-6-ansuelsmth@gmail.com>
> -static void
> +static int
> qca8k_write(struct qca8k_priv *priv, u32 reg, u32 val)
> {
> + struct mii_bus *bus = priv->bus;
> u16 r1, r2, page;
> int ret;
>
> qca8k_split_addr(reg, &r1, &r2, &page);
>
> - mutex_lock_nested(&priv->bus->mdio_lock, MDIO_MUTEX_NESTED);
> + mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED);
>
> ret = qca8k_set_page(priv->bus, page);
> if (ret < 0)
> @@ -183,6 +184,7 @@ qca8k_write(struct qca8k_priv *priv, u32 reg, u32 val)
>
> exit:
> mutex_unlock(&priv->bus->mdio_lock);
> + return ret;
> }
Same comment as read. Maybe put this and the other similar change into one patch.
> @@ -636,7 +660,9 @@ qca8k_mdio_read(struct qca8k_priv *priv, int port, u32 regnum)
> QCA8K_MDIO_MASTER_READ | QCA8K_MDIO_MASTER_PHY_ADDR(phy) |
> QCA8K_MDIO_MASTER_REG_ADDR(regnum);
>
> - qca8k_write(priv, QCA8K_MDIO_MASTER_CTRL, val);
> + ret = qca8k_write(priv, QCA8K_MDIO_MASTER_CTRL, val);
> + if (ret)
> + return ret;
>
> if (qca8k_busy_wait(priv, QCA8K_MDIO_MASTER_CTRL,
> QCA8K_MDIO_MASTER_BUSY))
> @@ -767,12 +793,18 @@ qca8k_setup(struct dsa_switch *ds)
> QCA8K_GLOBAL_FW_CTRL0_CPU_PORT_EN);
>
> /* Enable MIB counters */
> - qca8k_mib_init(priv);
> + ret = qca8k_mib_init(priv);
> + if (ret)
> + pr_warn("mib init failed");
Please use dev_warn().
>
> /* Enable QCA header mode on the cpu port */
> - qca8k_write(priv, QCA8K_REG_PORT_HDR_CTRL(QCA8K_CPU_PORT),
> - QCA8K_PORT_HDR_CTRL_ALL << QCA8K_PORT_HDR_CTRL_TX_S |
> - QCA8K_PORT_HDR_CTRL_ALL << QCA8K_PORT_HDR_CTRL_RX_S);
> + ret = qca8k_write(priv, QCA8K_REG_PORT_HDR_CTRL(QCA8K_CPU_PORT),
> + QCA8K_PORT_HDR_CTRL_ALL << QCA8K_PORT_HDR_CTRL_TX_S |
> + QCA8K_PORT_HDR_CTRL_ALL << QCA8K_PORT_HDR_CTRL_RX_S);
> + if (ret) {
> + pr_err("failed enabling QCA header mode");
dev_err()
In general, always use dev_err(), dev_warn(), dev_info() etc, so we
know which device returned an error.
Andrew
next prev parent reply other threads:[~2021-05-05 0:41 UTC|newest]
Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-04 22:28 [RFC PATCH net-next v3 01/20] net: mdio: ipq8064: clean whitespaces in define Ansuel Smith
2021-05-04 22:28 ` [RFC PATCH net-next v3 02/20] net: mdio: ipq8064: add regmap config to disable REGCACHE Ansuel Smith
2021-05-04 22:28 ` [RFC PATCH net-next v3 03/20] net: mdio: ipq8064: enlarge sleep after read/write operation Ansuel Smith
2021-05-04 22:28 ` [RFC PATCH net-next v3 04/20] net: dsa: qca8k: handle qca8k_set_page errors Ansuel Smith
2021-05-05 0:25 ` Andrew Lunn
2021-05-05 0:26 ` Andrew Lunn
2021-05-04 22:28 ` [RFC PATCH net-next v3 05/20] net: dsa: qca8k: handle error with qca8k_read operation Ansuel Smith
2021-05-05 0:36 ` Andrew Lunn
2021-05-05 0:44 ` Ansuel Smith
2021-05-04 22:29 ` [RFC PATCH net-next v3 06/20] net: dsa: qca8k: handle error with qca8k_write operation Ansuel Smith
2021-05-05 0:41 ` Andrew Lunn [this message]
2021-05-05 0:47 ` Ansuel Smith
2021-05-06 11:19 ` Vladimir Oltean
2021-05-04 22:29 ` [RFC PATCH net-next v3 07/20] net: dsa: qca8k: handle error with qca8k_rmw operation Ansuel Smith
2021-05-05 0:46 ` Andrew Lunn
2021-05-05 0:51 ` Ansuel Smith
2021-05-04 22:29 ` [RFC PATCH net-next v3 08/20] net: dsa: qca8k: add support for qca8327 switch Ansuel Smith
2021-05-05 0:48 ` Andrew Lunn
2021-05-06 11:20 ` Vladimir Oltean
2021-05-04 22:29 ` [RFC PATCH net-next v3 09/20] devicetree: net: dsa: qca8k: Document new compatible qca8327 Ansuel Smith
2021-05-05 0:48 ` Andrew Lunn
2021-05-06 21:07 ` Rob Herring
2021-05-04 22:29 ` [RFC PATCH net-next v3 10/20] net: dsa: qca8k: add priority tweak to qca8337 switch Ansuel Smith
2021-05-05 0:53 ` Andrew Lunn
2021-05-06 11:16 ` Vladimir Oltean
2021-05-04 22:29 ` [RFC PATCH net-next v3 11/20] net: dsa: qca8k: add GLOBAL_FC settings needed for qca8327 Ansuel Smith
2021-05-05 0:54 ` Andrew Lunn
2021-05-04 22:29 ` [RFC PATCH net-next v3 12/20] net: dsa: qca8k: add support for switch rev Ansuel Smith
2021-05-04 22:29 ` [RFC PATCH net-next v3 13/20] net: dsa: qca8k: make rgmii delay configurable Ansuel Smith
2021-05-05 1:00 ` Andrew Lunn
2021-05-05 1:07 ` Ansuel Smith
2021-05-06 11:10 ` Vladimir Oltean
2021-05-06 21:53 ` Ansuel Smith
2021-05-07 8:51 ` Vladimir Oltean
2021-05-04 22:29 ` [RFC PATCH net-next v3 14/20] net: dsa: qca8k: clear MASTER_EN after phy read/write Ansuel Smith
2021-05-04 22:29 ` [RFC PATCH net-next v3 15/20] net: dsa: qca8k: dsa: qca8k: protect MASTER busy_wait with mdio mutex Ansuel Smith
2021-05-05 1:04 ` Andrew Lunn
2021-05-04 22:29 ` [RFC PATCH net-next v3 16/20] net: dsa: qca8k: enlarge mdio delay and timeout Ansuel Smith
2021-05-06 11:27 ` Vladimir Oltean
2021-05-04 22:29 ` [RFC PATCH net-next v3 17/20] net: phy: phylink: permit to pass dev_flags to phylink_connect_phy Ansuel Smith
2021-05-04 22:33 ` Florian Fainelli
2021-05-05 0:35 ` Ansuel Smith
2021-05-04 22:29 ` [RFC PATCH net-next v3 18/20] net: dsa: slave: pass dev_flags also to internal PHY Ansuel Smith
2021-05-04 22:29 ` [RFC PATCH net-next v3 19/20] net: dsa: qca8k: pass switch_revision info to phy dev_flags Ansuel Smith
2021-05-06 11:24 ` Vladimir Oltean
2021-05-07 23:26 ` Ansuel Smith
2021-05-07 23:33 ` Russell King - ARM Linux admin
2021-05-07 23:51 ` Ansuel Smith
2021-05-08 17:31 ` Andrew Lunn
2021-05-08 18:26 ` Vladimir Oltean
2021-05-08 19:39 ` Russell King - ARM Linux admin
2021-05-08 20:55 ` Andrew Lunn
2021-05-07 9:44 ` Russell King - ARM Linux admin
2021-05-04 22:29 ` [RFC PATCH net-next v3 20/20] net: phy: add qca8k driver for qca8k switch internal PHY Ansuel Smith
2021-05-05 1:11 ` Andrew Lunn
2021-05-05 1:17 ` Ansuel Smith
2021-05-05 12:06 ` Andrew Lunn
2021-05-05 0:17 ` [RFC PATCH net-next v3 01/20] net: mdio: ipq8064: clean whitespaces in define Andrew Lunn
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