From: Pavel Machek <pavel@ucw.cz>
To: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ulf Hansson <ulf.hansson@linaro.org>,
linux-mmc <linux-mmc@vger.kernel.org>,
"Rafael J. Wysocki" <rafael.j.wysocki@intel.com>,
Len Brown <len.brown@intel.com>,
Kevin Hilman <khilman@linaro.org>,
Tomeu Vizoso <tomeu.vizoso@collabora.com>,
linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [RFC PATCH 0/4] mmc: sdhci: Support maximum DMA latency request via PM QoS
Date: Thu, 26 Mar 2015 10:51:17 +0100 [thread overview]
Message-ID: <20150326095117.GA637@amd> (raw)
In-Reply-To: <5513C352.2080208@intel.com>
On Thu 2015-03-26 10:29:06, Adrian Hunter wrote:
> On 25/03/15 21:43, Pavel Machek wrote:
> > Hi!
> >
> >> Here are some patches to address an issue with SDHCI
> >> in Intel Baytrail. Intel Baytrail has been observed
> >> sometimes to hang if host controllers are using DMA
> >> while deep C-states are used. Workaround that by
> >
> > I wonder if there is more information on this one? I see your address
> > is "@intel". For example which C states are affected, and if there's
>
> The problem starts at C6 - I will add that to the commit message.
Better find a place for a comment in code, too...
Thanks,
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
next prev parent reply other threads:[~2015-03-26 9:51 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-24 13:40 [RFC PATCH 0/4] mmc: sdhci: Support maximum DMA latency request via PM QoS Adrian Hunter
2015-03-24 13:40 ` [RFC PATCH 1/4] PM / QoS: Add pm_qos_cancel_request_lazy() that doesn't sleep Adrian Hunter
2015-04-20 14:00 ` Dov Levenglick
2015-04-21 8:26 ` Adrian Hunter
2015-04-21 10:18 ` Dov Levenglick
2015-04-21 10:25 ` Adrian Hunter
2015-03-24 13:40 ` [RFC PATCH 2/4] mmc: sdhci: Support maximum DMA latency request via PM QOS Adrian Hunter
2015-03-24 13:40 ` [RFC PATCH 3/4] mmc: sdhci-acpi: Fix device hang on Intel BayTrail Adrian Hunter
2015-03-24 13:40 ` [RFC PATCH 4/4] mmc: sdhci-pci: " Adrian Hunter
2015-03-24 20:13 ` [RFC PATCH 0/4] mmc: sdhci: Support maximum DMA latency request via PM QoS Rafael J. Wysocki
2015-03-25 12:37 ` Adrian Hunter
2015-03-25 19:43 ` Pavel Machek
2015-03-26 8:29 ` Adrian Hunter
2015-03-26 9:51 ` Pavel Machek [this message]
2015-04-01 19:59 ` Len Brown
2015-04-02 19:35 ` Adrian Hunter
2015-07-22 12:03 ` Bastien Nocera
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