Zhenzhong Duan c96788214e cpuidle: Do not unset the driver if it is there already ...

commit 918c1fe9fb upstream.

Fix __cpuidle_set_driver() to check if any of the CPUs in the mask has
a driver different from drv already and, if so, return -EBUSY before
updating any cpuidle_drivers per-CPU pointers.

Fixes: 82467a5a88 ("cpuidle: simplify multiple driver support")
Cc: 3.11+ <stable@vger.kernel.org> # 3.11+
Signed-off-by: Zhenzhong Duan <zhenzhong.duan@oracle.com>
[ rjw: Subject & changelog ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2019-12-17 20:35:00 +01:00

..

governors

cpuidle: menu: Fix wakeup statistics updates for polling state

2019-11-24 08:20:07 +01:00

coupled.c

smp: Avoid using two cache lines for struct call_single_data

2017-08-29 15:14:38 +02:00

cpuidle-arm.c

ARM: cpuidle: Don't register the driver when back-end init returns -ENXIO

2018-11-21 09:19:23 +01:00

cpuidle-at91.c

drivers/cpuidle: Convert non-modular drivers to use builtin_platform_driver

2015-06-16 14:12:38 -04:00

cpuidle-big_little.c

cpuidle: big.LITTLE: fix refcount leak

2019-02-12 19:47:08 +01:00

cpuidle-calxeda.c

ARM: migrate to common PSCI client code

2015-08-03 15:38:39 +01:00

cpuidle-clps711x.c

drivers/cpuidle: make cpuidle-clps711x.c explicitly non-modular

2015-12-15 00:22:21 +01:00

cpuidle-cps.c

Update MIPS email addresses

2017-11-03 09:02:30 -07:00

cpuidle-exynos.c

cpuidle: Enable coupled cpuidle support on Exynos3250 platform

2018-03-29 13:06:08 +02:00

cpuidle-kirkwood.c

ARM: cpuidle: Remove duplicate header inclusion

2015-03-23 18:03:11 +01:00

cpuidle-mvebu-v7.c

cpuidle: mvebu: disable the bind/unbind attributes and use builtin_platform_driver

2015-10-23 12:40:48 +02:00

cpuidle-powernv.c

powernv/cpuidle: Use parsed device tree values for cpuidle_init

2018-07-31 19:56:44 +10:00

cpuidle-pseries.c

powerpc/pseries/cpuidle: Fix preempt warning

2019-01-26 09:32:37 +01:00

cpuidle-ux500.c

drivers/cpuidle: make cpuidle-ux500.c explicitly non-modular

2015-12-15 00:22:22 +01:00

cpuidle-zynq.c

drivers/cpuidle: Convert non-modular drivers to use builtin_platform_driver

2015-06-16 14:12:38 -04:00

cpuidle.c

cpuidle: Return nohz hint from cpuidle_select()

2018-04-06 09:29:34 +02:00

cpuidle.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

driver.c

cpuidle: Do not unset the driver if it is there already

2019-12-17 20:35:00 +01:00

dt_idle_states.c

Merge branch 'pm-sleep'

2017-09-04 00:06:02 +02:00

dt_idle_states.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

governor.c

cpuidle: governors: Consolidate PM QoS handling

2018-05-30 23:13:00 +02:00

Kconfig

cpuidle: Don't enable all governors by default

2016-01-15 22:39:58 +01:00

Kconfig.arm

ARM: cpuidle: Support asymmetric idle definition

2017-06-24 01:51:00 +02:00

Kconfig.mips

cpuidle: cpuidle-cps: Enable use with MIPSr6 CPUs.

2016-10-04 16:13:57 +02:00

Kconfig.powerpc

powerpc/powernv/cpuidle: Back-end cpuidle driver for powernv platform.

2014-01-29 17:02:24 +11:00

Makefile

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

poll_state.c

cpuidle: menu: Fix wakeup statistics updates for polling state

2019-11-24 08:20:07 +01:00

sysfs.c

PM: cpuidle/suspend: Add s2idle usage and time state attributes

2018-03-29 13:06:08 +02:00