linux-kernel - Re: [PATCH 0/3] Cpufreq frequency serialization fixes

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Message-ID: <alpine.SOC.1.00.1404252028410.11626@math.ut.ee>
Date:	Fri, 25 Apr 2014 20:29:04 +0300 (EEST)
From:	Meelis Roos <mroos@...ux.ee>
To:	"Srivatsa S. Bhat" <srivatsa.bhat@...ux.vnet.ibm.com>
cc:	rjw@...ysocki.net, viresh.kumar@...aro.org,
	cpufreq@...r.kernel.org, linux-pm@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/3] Cpufreq frequency serialization fixes

> Meelis Roos reported hangs during boot in the longhaul cpufreq driver, after
> commit 12478cf0c55 (cpufreq: Make sure frequency transitions are serialized).
> The root-cause of this issue is the extra invocation of the
> cpufreq_freq_transition_begin() and cpufreq_freq_transition_end() APIs in the
> longhaul driver. I found similar issues in the powernow-k6 and powernow-k7
> drivers as well. This patchset fixes the issue in all the 3 drivers.
> 
>  Srivatsa S. Bhat (3):
>       cpufreq, powernow-k7: Fix double invocation of cpufreq_freq_transition_begin/end
>       cpufreq, powernow-k6: Fix double invocation of cpufreq_freq_transition_begin/end
>       cpufreq, longhaul: Fix double invocation of cpufreq_freq_transition_begin/end

This set fixes it for me on VIA EPIA with longhaul.

-- 
Meelis Roos (mroos@...ux.ee)
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