From: Grygorii Strashko <grygorii.strashko@ti.com>
To: Florian Fainelli <f.fainelli@gmail.com>,
"David S. Miller" <davem@davemloft.net>,
netdev@vger.kernel.org, Sekhar Nori <nsekhar@ti.com>,
Mugunthan V N <mugunthanvnm@ti.com>
Cc: linux-kernel@vger.kernel.org, linux-omap@vger.kernel.org,
Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org>,
Rob Herring <robh+dt@kernel.org>,
devicetree@vger.kernel.org
Subject: Re: [PATCH 04/15] drivers: net: cpsw: ethtool: fix accessing to suspended device
Date: Wed, 15 Jun 2016 19:45:00 +0300 [thread overview]
Message-ID: <5761860C.2020502@ti.com> (raw)
In-Reply-To: <57617ECF.2010902@gmail.com>
On 06/15/2016 07:14 PM, Florian Fainelli wrote:
> On 06/15/2016 04:55 AM, Grygorii Strashko wrote:
>> The CPSW might be suspended by RPM if all ethX interfaces are down,
>> but it still could be accesible through ethtool interfce. In this case
>> ethtool operations, requiring registers access, will cause L3 errors and
>> CPSW crash.
>>
>> Hence, fix it by adding RPM get/put calls in ethtool callbcaks which
>> can access CPSW registers: .set_coalesce(), .get_ethtool_stats(),
>> .set_pauseparam(), .get_regs()
>
> Provided that you implement an ethtool_ops::begin, it will be called
> before each ethtool operation runs, so that could allow you to eliminate
> some of the duplication here. Conversely ethtool_ops::end terminates
> each operation and can be used for that purpose.
Ah. Thanks for the advice. (assume you've meant .complete())
--
regards,
-grygorii
next prev parent reply other threads:[~2016-06-15 16:45 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-15 11:55 [PATCH 00/15] drivers: net: cpsw: improve runtime pm Grygorii Strashko
2016-06-15 11:55 ` [PATCH 01/15] drivers: net: cpsw: fix suspend when all ethX devices are down Grygorii Strashko
2016-06-15 11:55 ` [PATCH 02/15] drivers: net: cpsw: check return code from pm runtime calls Grygorii Strashko
2016-06-15 11:55 ` [PATCH 03/15] drivers: net: cpsw: remove pm runtime calls from suspend callbacks Grygorii Strashko
2016-06-15 11:55 ` [PATCH 04/15] drivers: net: cpsw: ethtool: fix accessing to suspended device Grygorii Strashko
2016-06-15 16:14 ` Florian Fainelli
2016-06-15 16:45 ` Grygorii Strashko [this message]
2016-06-16 12:48 ` Ivan Khoronzhuk
2016-06-16 13:32 ` Ivan Khoronzhuk
2016-06-15 11:55 ` [PATCH 05/15] drivers: net: cpsw: ndev: " Grygorii Strashko
2016-06-15 11:55 ` [PATCH 06/15] drivers: net: davinci_mdio: do pm runtime initialization later in probe Grygorii Strashko
2016-06-15 11:55 ` [PATCH 07/15] drivers: net: davinci_mdio: remove pm runtime calls from suspend callbacks Grygorii Strashko
2016-06-15 11:55 ` [PATCH 08/15] drivers: net: davinci_mdio: drop suspended and lock fields from mdio_data Grygorii Strashko
2016-06-15 11:55 ` [PATCH 09/15] drivers: net: davinci_mdio: split reset function on init_clk and enable Grygorii Strashko
2016-06-15 11:55 ` [PATCH 10/15] drivers: net: davinci_mdio: add pm runtime callbacks Grygorii Strashko
2016-06-15 11:55 ` [PATCH 11/15] drivers: net: davinci_mdio: implement pm runtime auto mode Grygorii Strashko
2016-06-15 11:56 ` [PATCH 12/15] net: davinci_mdio: document missed "ti,am4372-mdio" compat string Grygorii Strashko
2016-06-19 14:35 ` Rob Herring
2016-06-22 10:26 ` Grygorii Strashko
2016-06-15 11:56 ` [PATCH 13/15] net: davinci_mdio: introduce "ti,cpsw-mdio" " Grygorii Strashko
2016-06-15 11:56 ` [PATCH 14/15] drivers: net: davinci_mdio: enable pm runtime auto for ti cpsw-mdio Grygorii Strashko
2016-06-15 13:48 ` kbuild test robot
2016-06-15 11:56 ` [PATCH 15/15] ARM: dts: am335x/am437x/dra7: use new "ti,cpsw-mdio" compat string Grygorii Strashko
2016-06-21 11:34 ` Tony Lindgren
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