From: Thomas Schlichter <thomas.schlichter@web.de>
Date: Tue, 31 Mar 2015 18:24:39 +0000 (+0200)
Subject: cpuidle: ACPI: do not overwrite name and description of C0
X-Git-Tag: omap-for-v4.1/fixes-rc1~216^2^4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c7e8bdf5872c5a8f5a6494e16fe839c38a0d3d3d;p=pandora-kernel.git

cpuidle: ACPI: do not overwrite name and description of C0

Fix a bug that leads to showing the name and description of C-state C0
as "<null>" in sysfs after the ACPI C-states changed (e.g. after AC->DC
or DC->AC
transition).

The function poll_idle_init() in drivers/cpuidle/driver.c initializes the
state 0 during cpuidle_register_driver(), so we better do not overwrite it
again with '\0' during acpi_processor_cst_has_changed().

Signed-off-by: Thomas Schlichter <thomas.schlichter@web.de>
Reviewed-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Cc: 3.13+ <stable@vger.kernel.org> # 3.13+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
---

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