From: Andrew Lunn <andrew@lunn.ch>
To: Florinel Iordache <florinel.iordache@nxp.com>
Cc: davem@davemloft.net, netdev@vger.kernel.org,
f.fainelli@gmail.com, hkallweit1@gmail.com,
linux@armlinux.org.uk, devicetree@vger.kernel.org,
linux-doc@vger.kernel.org, robh+dt@kernel.org,
mark.rutland@arm.com, kuba@kernel.org, corbet@lwn.net,
shawnguo@kernel.org, leoyang.li@nxp.com,
madalin.bucur@oss.nxp.com, ioana.ciornei@nxp.com,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH net-next 6/9] net: phy: add backplane kr driver support
Date: Fri, 27 Mar 2020 15:28:15 +0100 [thread overview]
Message-ID: <20200327142815.GG11004@lunn.ch> (raw)
In-Reply-To: <1585230682-24417-7-git-send-email-florinel.iordache@nxp.com>
> +/* Read AN Link Status */
> +static int is_an_link_up(struct phy_device *bpphy)
> +{
> + struct backplane_phy_info *bp_phy = bpphy->priv;
> + int ret, val = 0;
> +
> + mutex_lock(&bp_phy->bpphy_lock);
> +
> + /* Read twice because Link_Status is LL (Latched Low) bit */
> + val = phy_read_mmd(bpphy, MDIO_MMD_AN, bp_phy->bp_dev.mdio.an_status);
> + val = phy_read_mmd(bpphy, MDIO_MMD_AN, bp_phy->bp_dev.mdio.an_status);
> +
> + mutex_unlock(&bp_phy->bpphy_lock);
How does this mutex interact with phydev->lock? It appears both are
trying to do the same thing, serialise access to the PHY hardware.
Andrew
next prev parent reply other threads:[~2020-03-27 14:28 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-26 13:51 [PATCH net-next 0/9] net: ethernet backplane support Florinel Iordache
2020-03-26 13:51 ` [PATCH net-next 1/9] doc: net: add backplane documentation Florinel Iordache
2020-03-26 13:51 ` [PATCH net-next 2/9] dt-bindings: net: add backplane dt bindings Florinel Iordache
2020-03-27 1:04 ` Andrew Lunn
2020-03-27 12:06 ` Russell King - ARM Linux admin
2020-03-27 15:00 ` [EXT] " Florinel Iordache
2020-03-27 15:28 ` Russell King - ARM Linux admin
2020-03-27 15:44 ` Andrew Lunn
2020-03-27 17:35 ` Russell King - ARM Linux admin
2020-03-30 5:43 ` Madalin Bucur (OSS)
2020-03-30 15:39 ` Rob Herring
2020-03-26 13:51 ` [PATCH net-next 3/9] net: phy: add kr phy connection type Florinel Iordache
2020-03-27 0:15 ` Andrew Lunn
2020-03-27 12:01 ` Russell King - ARM Linux admin
2020-03-27 12:12 ` Madalin Bucur (OSS)
2020-03-27 12:40 ` Russell King - ARM Linux admin
2020-03-29 8:22 ` [EXT] " Florinel Iordache
2020-03-29 9:01 ` Russell King - ARM Linux admin
2020-03-27 0:32 ` Florian Fainelli
2020-03-26 13:51 ` [PATCH net-next 4/9] net: fman: add kr support for dpaa1 mac Florinel Iordache
2020-03-26 13:51 ` [PATCH net-next 5/9] net: dpaa2: add kr support for dpaa2 mac Florinel Iordache
2020-03-26 13:51 ` [PATCH net-next 7/9] net: phy: enable qoriq backplane support Florinel Iordache
2020-03-26 20:03 ` Joe Perches
2020-03-26 20:13 ` Andrew Lunn
2020-03-26 20:27 ` Joe Perches
2020-03-26 13:51 ` [PATCH net-next 8/9] net: phy: add bee algorithm for kr training Florinel Iordache
2020-03-26 13:51 ` [PATCH net-next 9/9] arm64: dts: add serdes and mdio description Florinel Iordache
2020-03-27 12:09 ` Russell King - ARM Linux admin
[not found] ` <1585230682-24417-7-git-send-email-florinel.iordache@nxp.com>
2020-03-26 18:53 ` [PATCH net-next 6/9] net: phy: add backplane kr driver support David Miller
2020-03-26 18:55 ` Joe Perches
2020-03-26 19:07 ` David Miller
2020-03-26 19:42 ` Joe Perches
2020-03-27 1:07 ` Andrew Lunn
2020-03-27 13:02 ` [EXT] " Florinel Iordache
2020-03-27 13:23 ` Andrew Lunn
2020-03-27 17:43 ` Florian Fainelli
2020-03-27 14:22 ` Andrew Lunn
2020-03-27 18:25 ` Joe Perches
2020-03-27 14:28 ` Andrew Lunn [this message]
2020-03-27 14:33 ` Andrew Lunn
2020-03-27 14:38 ` Andrew Lunn
2020-04-01 13:35 Florinel Iordache
2020-04-01 13:51 ` Andrew Lunn
2020-04-01 14:01 Florinel Iordache
2020-04-01 14:11 ` Andrew Lunn
2020-04-01 14:14 ` Russell King - ARM Linux admin
2020-04-24 12:14 Florinel Iordache
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