From: "Ardelean, Alexandru" <alexandru.Ardelean@analog.com>
To: "andrew@lunn.ch" <andrew@lunn.ch>
Cc: "davem@davemloft.net" <davem@davemloft.net>,
"hkallweit1@gmail.com" <hkallweit1@gmail.com>,
"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
"mark.rutland@arm.com" <mark.rutland@arm.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"f.fainelli@gmail.com" <f.fainelli@gmail.com>,
"netdev@vger.kernel.org" <netdev@vger.kernel.org>,
"robh+dt@kernel.org" <robh+dt@kernel.org>
Subject: Re: [PATCH v4 13/14] net: phy: adin: add ethtool get_stats support
Date: Tue, 13 Aug 2019 05:48:53 +0000 [thread overview]
Message-ID: <c3fdb21c40900dae0e52b02b98fe27924a76c256.camel@analog.com> (raw)
In-Reply-To: <20190812143315.GS14290@lunn.ch>
On Mon, 2019-08-12 at 16:33 +0200, Andrew Lunn wrote:
> [External]
>
> > +static int adin_read_mmd_stat_regs(struct phy_device *phydev,
> > + struct adin_hw_stat *stat,
> > + u32 *val)
> > +{
> > + int ret;
> > +
> > + ret = phy_read_mmd(phydev, MDIO_MMD_VEND1, stat->reg1);
> > + if (ret < 0)
> > + return ret;
> > +
> > + *val = (ret & 0xffff);
> > +
> > + if (stat->reg2 == 0)
> > + return 0;
> > +
> > + ret = phy_read_mmd(phydev, MDIO_MMD_VEND1, stat->reg2);
> > + if (ret < 0)
> > + return ret;
> > +
> > + *val <<= 16;
> > + *val |= (ret & 0xffff);
> > +
> > + return 0;
> > +}
>
> It still looks like you have not dealt with overflow from the LSB into
> the MSB between the two reads.
Apologies for forgetting to address this.
I did not intentionally leave it out; this item got lost after V1 [which had the most remarks].
Changelog V1 -> V2 was quite bulky, and I did not look at V1 remarks after I finished V2.
Thanks for snippet.
>
> do {
> hi1 = phy_read_mmd(phydev, MDIO_MMD_VEND1, stat->reg2);
> if (hi1 < 0)
> return hi1;
>
> low = phy_read_mmd(phydev, MDIO_MMD_VEND1, stat->reg1);
> if (low < 0)
> return low;
>
> hi2 = phy_read_mmd(phydev, MDIO_MMD_VEND1, stat->reg2);
> if (hi2 < 0)
> return hi1;
> } while (hi1 != hi2)
>
> return low | (hi << 16);
>
> Andrew
next prev parent reply other threads:[~2019-08-13 5:49 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-12 11:23 [PATCH v4 00/14] net: phy: adin: add support for Analog Devices PHYs Alexandru Ardelean
2019-08-12 11:23 ` [PATCH v4 01/14] " Alexandru Ardelean
2019-08-14 17:47 ` Florian Fainelli
2019-08-12 11:23 ` [PATCH v4 02/14] net: phy: adin: hook genphy_{suspend,resume} into the driver Alexandru Ardelean
2019-08-14 17:47 ` Florian Fainelli
2019-08-12 11:23 ` [PATCH v4 03/14] net: phy: adin: add support for interrupts Alexandru Ardelean
2019-08-14 17:48 ` Florian Fainelli
2019-08-12 11:23 ` [PATCH v4 04/14] net: phy: adin: add {write,read}_mmd hooks Alexandru Ardelean
2019-08-12 14:06 ` Andrew Lunn
2019-08-14 17:49 ` Florian Fainelli
2019-08-12 11:23 ` [PATCH v4 05/14] net: phy: adin: configure RGMII/RMII/MII modes on config Alexandru Ardelean
2019-08-14 17:50 ` Florian Fainelli
2019-08-12 11:23 ` [PATCH v4 06/14] net: phy: adin: make RGMII internal delays configurable Alexandru Ardelean
2019-08-14 17:52 ` Florian Fainelli
2019-08-12 11:23 ` [PATCH v4 07/14] net: phy: adin: make RMII fifo depth configurable Alexandru Ardelean
2019-08-14 17:53 ` Florian Fainelli
2019-08-12 11:23 ` [PATCH v4 08/14] net: phy: adin: add support MDI/MDIX/Auto-MDI selection Alexandru Ardelean
2019-08-14 17:54 ` Florian Fainelli
2019-08-12 11:23 ` [PATCH v4 09/14] net: phy: adin: add EEE translation layer from Clause 45 to Clause 22 Alexandru Ardelean
2019-08-12 14:08 ` Andrew Lunn
2019-08-14 17:55 ` Florian Fainelli
2019-08-12 11:23 ` [PATCH v4 10/14] net: phy: adin: implement PHY subsystem software reset Alexandru Ardelean
2019-08-12 14:19 ` Andrew Lunn
2019-08-13 5:42 ` Ardelean, Alexandru
2019-08-12 11:23 ` [PATCH v4 11/14] net: phy: adin: implement Energy Detect Powerdown mode Alexandru Ardelean
2019-08-14 17:57 ` Florian Fainelli
2019-08-16 6:09 ` Ardelean, Alexandru
2019-08-12 11:23 ` [PATCH v4 12/14] net: phy: adin: implement downshift configuration via phy-tunable Alexandru Ardelean
2019-08-12 14:21 ` Andrew Lunn
2019-08-14 17:58 ` Florian Fainelli
2019-08-12 11:23 ` [PATCH v4 13/14] net: phy: adin: add ethtool get_stats support Alexandru Ardelean
2019-08-12 14:26 ` Andrew Lunn
2019-08-13 6:07 ` Ardelean, Alexandru
2019-08-12 14:33 ` Andrew Lunn
2019-08-13 5:48 ` Ardelean, Alexandru [this message]
2019-08-14 9:08 ` Ardelean, Alexandru
2019-08-14 14:04 ` Andrew Lunn
2019-08-12 11:23 ` [PATCH v4 14/14] dt-bindings: net: add bindings for ADIN PHY driver Alexandru Ardelean
2019-08-12 14:34 ` Andrew Lunn
2019-08-12 19:02 ` Rob Herring
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