From: Andy Shevchenko <andy.shevchenko@gmail.com>
To: Calvin Johnson <calvin.johnson@oss.nxp.com>
Cc: Grant Likely <grant.likely@arm.com>,
"Rafael J . Wysocki" <rafael@kernel.org>,
Jeremy Linton <jeremy.linton@arm.com>,
Andrew Lunn <andrew@lunn.ch>,
Florian Fainelli <f.fainelli@gmail.com>,
Russell King - ARM Linux admin <linux@armlinux.org.uk>,
Cristi Sovaiala <cristian.sovaiala@nxp.com>,
Florin Laurentiu Chiculita <florinlaurentiu.chiculita@nxp.com>,
Ioana Ciornei <ioana.ciornei@nxp.com>,
Madalin Bucur <madalin.bucur@oss.nxp.com>,
Heikki Krogerus <heikki.krogerus@linux.intel.com>,
Marcin Wojtas <mw@semihalf.com>,
Pieter Jansen Van Vuuren <pieter.jansenvv@bamboosystems.io>,
Jon <jon@solid-run.com>, "linux.cj" <linux.cj@gmail.com>,
Laurentiu Tudor <laurentiu.tudor@nxp.com>,
Diana Madalina Craciun <diana.craciun@nxp.com>,
ACPI Devel Maling List <linux-acpi@vger.kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
linux-arm Mailing List <linux-arm-kernel@lists.infradead.org>,
netdev <netdev@vger.kernel.org>,
"David S. Miller" <davem@davemloft.net>,
Heiner Kallweit <hkallweit1@gmail.com>,
Jakub Kicinski <kuba@kernel.org>
Subject: Re: [net-next PATCH v2 06/14] net: mdiobus: Introduce fwnode_mdiobus_register_phy()
Date: Tue, 15 Dec 2020 19:33:40 +0200 [thread overview]
Message-ID: <CAHp75VcY2uOirAXGv5kFvHbNfHcZ6-gPsUMTB-_5AuBkHdu-0A@mail.gmail.com> (raw)
In-Reply-To: <20201215164315.3666-7-calvin.johnson@oss.nxp.com>
On Tue, Dec 15, 2020 at 6:44 PM Calvin Johnson
<calvin.johnson@oss.nxp.com> wrote:
>
> Introduce fwnode_mdiobus_register_phy() to register PHYs on the
> mdiobus. From the compatible string, identify whether the PHY is
> c45 and based on this create a PHY device instance which is
> registered on the mdiobus.
...
> +int fwnode_mdiobus_register_phy(struct mii_bus *bus,
> + struct fwnode_handle *child, u32 addr)
> +{
> + struct mii_timestamper *mii_ts;
> + struct phy_device *phy;
> + const char *cp;
> + bool is_c45;
> + u32 phy_id;
> + int rc;
> + if (is_of_node(child)) {
> + mii_ts = of_find_mii_timestamper(to_of_node(child));
> + if (IS_ERR(mii_ts))
> + return PTR_ERR(mii_ts);
> + }
Perhaps
mii_ts = of_find_mii_timestamper(to_of_node(child));
> +
> + rc = fwnode_property_read_string(child, "compatible", &cp);
> + is_c45 = !(rc || strcmp(cp, "ethernet-phy-ieee802.3-c45"));
> +
> + if (is_c45 || fwnode_get_phy_id(child, &phy_id))
> + phy = get_phy_device(bus, addr, is_c45);
> + else
> + phy = phy_device_create(bus, addr, phy_id, 0, NULL);
> + if (IS_ERR(phy)) {
> + if (mii_ts && is_of_node(child))
> + unregister_mii_timestamper(mii_ts);
if (!IS_ERR_OR_NULL(mii_ts))
...
However it points to the question why unregister() doesn't handle the
above cases.
I would expect unconditional call to unregister() here.
> + return PTR_ERR(phy);
> + }
> +
> + if (is_acpi_node(child)) {
> + phy->irq = bus->irq[addr];
> +
> + /* Associate the fwnode with the device structure so it
> + * can be looked up later.
> + */
> + phy->mdio.dev.fwnode = child;
> +
> + /* All data is now stored in the phy struct, so register it */
> + rc = phy_device_register(phy);
> + if (rc) {
> + phy_device_free(phy);
> + fwnode_handle_put(phy->mdio.dev.fwnode);
> + return rc;
> + }
> +
> + dev_dbg(&bus->dev, "registered phy at address %i\n", addr);
> + } else if (is_of_node(child)) {
> + rc = of_mdiobus_phy_device_register(bus, phy, to_of_node(child), addr);
> + if (rc) {
> + if (mii_ts)
> + unregister_mii_timestamper(mii_ts);
Ditto.
> + phy_device_free(phy);
> + return rc;
> + }
> +
> + /* phy->mii_ts may already be defined by the PHY driver. A
> + * mii_timestamper probed via the device tree will still have
> + * precedence.
> + */
> + if (mii_ts)
> + phy->mii_ts = mii_ts;
How is that defined? Do you need to do something with an old pointer?
> + }
> + return 0;
> +}
--
With Best Regards,
Andy Shevchenko
next prev parent reply other threads:[~2020-12-15 17:36 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-15 16:43 [net-next PATCH v2 00/14] ACPI support for dpaa2 driver Calvin Johnson
2020-12-15 16:43 ` [net-next PATCH v2 01/14] Documentation: ACPI: DSD: Document MDIO PHY Calvin Johnson
2020-12-15 16:43 ` [net-next PATCH v2 02/14] net: phy: Introduce phy related fwnode functions Calvin Johnson
2020-12-15 17:23 ` Andy Shevchenko
2020-12-17 7:32 ` Calvin Johnson
2020-12-15 16:43 ` [net-next PATCH v2 03/14] of: mdio: Refactor of_phy_find_device() Calvin Johnson
2020-12-15 16:43 ` [net-next PATCH v2 04/14] net: phy: Introduce fwnode_get_phy_id() Calvin Johnson
2020-12-15 17:28 ` Andy Shevchenko
2020-12-17 8:28 ` Calvin Johnson
2020-12-17 9:44 ` Andy Shevchenko
2020-12-15 16:43 ` [net-next PATCH v2 05/14] of: mdio: Refactor of_get_phy_id() Calvin Johnson
2020-12-15 16:43 ` [net-next PATCH v2 06/14] net: mdiobus: Introduce fwnode_mdiobus_register_phy() Calvin Johnson
2020-12-15 17:33 ` Andy Shevchenko [this message]
2020-12-18 5:34 ` Calvin Johnson
2020-12-18 15:35 ` Andy Shevchenko
2020-12-15 16:43 ` [net-next PATCH v2 07/14] of: mdio: Refactor of_mdiobus_register_phy() Calvin Johnson
2020-12-15 16:43 ` [net-next PATCH v2 08/14] net: mdiobus: Introduce fwnode_mdiobus_register() Calvin Johnson
2020-12-15 17:53 ` Andy Shevchenko
2020-12-18 5:40 ` Calvin Johnson
2020-12-18 15:36 ` Andy Shevchenko
2020-12-15 16:43 ` [net-next PATCH v2 09/14] net/fsl: Use fwnode_mdiobus_register() Calvin Johnson
2020-12-15 17:55 ` Andy Shevchenko
2020-12-18 5:48 ` Calvin Johnson
2020-12-15 16:43 ` [net-next PATCH v2 10/14] device property: Introduce fwnode_get_id() Calvin Johnson
2020-12-15 17:00 ` Laurent Pinchart
2020-12-15 17:49 ` Andy Shevchenko
2020-12-18 6:09 ` Calvin Johnson
2020-12-15 17:45 ` Andy Shevchenko
2020-12-18 6:12 ` Calvin Johnson
2020-12-15 16:43 ` [net-next PATCH v2 11/14] phylink: introduce phylink_fwnode_phy_connect() Calvin Johnson
2020-12-15 16:43 ` [net-next PATCH v2 12/14] net: phylink: Refactor phylink_of_phy_connect() Calvin Johnson
2020-12-15 16:43 ` [net-next PATCH v2 13/14] net: phy: Introduce fwnode_mdio_find_device() Calvin Johnson
2020-12-15 16:43 ` [net-next PATCH v2 14/14] net: dpaa2-mac: Add ACPI support for DPAA2 MAC driver Calvin Johnson
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