linux-kernel - [PATCH 0/2] Properly fix sysfs_get_idlestate

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Message-Id: <1418565998-3701-1-git-send-email-prarit@redhat.com>
Date:	Sun, 14 Dec 2014 09:06:36 -0500
From:	Prarit Bhargava <prarit@...hat.com>
To:	linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:	Prarit Bhargava <prarit@...hat.com>,
	Thomas Renninger <trenn@...e.de>,
	"Rafael J. Wysocki" <rafael.j.wysocki@...el.com>
Subject: [PATCH 0/2] Properly fix sysfs_get_idlestate_count()

My previous commit 16b7c275c055 ("tools: cpupower: fix return checks for
sysfs_get_idlestate_count()") was not correct.  After looking
at the changelog for cpupower I noticed that Thomas had changed the return of
sysfs_get_idlestate_count() to an unsigned int to simplify the code.  The
problem is really that both he (in his original change) and I (in my new
change) missed the obvious that sysfs_get_idlestate_count()
can't return -ENODEV.  It should just return 0 for "no c-states".

Patch 1 reverts my recent change and patch 2 fixes the problem correctly.

Sorry 'bout that Thomas.  I should have caught that the the first time.

Cc: Thomas Renninger <trenn@...e.de>
Cc: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
Signed-off-by: Prarit Bhargava <prarit@...hat.com>

Prarit Bhargava (2):
  Revert "tools: cpupower: fix return checks for
    sysfs_get_idlestate_count()"
  Fix no idle state information return value

 tools/power/cpupower/utils/cpuidle-info.c  |    8 ++++----
 tools/power/cpupower/utils/helpers/sysfs.c |    2 +-
 2 files changed, 5 insertions(+), 5 deletions(-)

-- 
1.7.9.3

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