linux-kernel - Re: [PATCH] cpufreq: remove sysfs link when a cpu != policy->cpu, is removed

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Message-ID: <5303BD27.4000905@wwwdotorg.org>
Date:	Tue, 18 Feb 2014 13:05:59 -0700
From:	Stephen Warren <swarren@...dotorg.org>
To:	Viresh Kumar <viresh.kumar@...aro.org>, rjw@...ysocki.net,
	swarren@...dia.com
CC:	linaro-kernel@...ts.linaro.org, cpufreq@...r.kernel.org,
	linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] cpufreq: remove sysfs link when a cpu != policy->cpu,
 is removed

On 02/17/2014 02:22 AM, Viresh Kumar wrote:
> Earlier patch tried to do this but missed this piece of code to fix.
> 
> 42f921a cpufreq: remove sysfs files for CPUs which failed to come back after
> resume
> 
> Currently we are getting this on suspend/resume:
> 
> ------------[ cut here ]------------
> WARNING: CPU: 0 PID: 877 at fs/sysfs/dir.c:52 sysfs_warn_dup+0x68/0x84()
> sysfs: cannot create duplicate filename '/devices/system/cpu/cpu1/cpufreq'
...
> Fix this by removing sysfs link for cpufreq directory when cpu removed isn't
> policy->cpu.

Tested-by: Stephen Warren <swarren@...dia.com>
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