From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:33023 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751078AbcFDTPF (ORCPT ); Sat, 4 Jun 2016 15:15:05 -0400 Subject: Patch "cpuidle: Indicate when a device has been unregistered" has been added to the 3.14-stable tree To: d-gerlach@ti.com, daniel.lezcano@linaro.org, gregkh@linuxfoundation.org, rafael.j.wysocki@intel.com Cc: , From: Date: Sat, 04 Jun 2016 12:15:04 -0700 Message-ID: <1465067704187126@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled cpuidle: Indicate when a device has been unregistered to the 3.14-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: cpuidle-indicate-when-a-device-has-been-unregistered.patch and it can be found in the queue-3.14 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From c998c07836f985b24361629dc98506ec7893e7a0 Mon Sep 17 00:00:00 2001 From: Dave Gerlach Date: Tue, 5 Apr 2016 14:05:38 -0500 Subject: cpuidle: Indicate when a device has been unregistered From: Dave Gerlach commit c998c07836f985b24361629dc98506ec7893e7a0 upstream. Currently the 'registered' member of the cpuidle_device struct is set to 1 during cpuidle_register_device. In this same function there are checks to see if the device is already registered to prevent duplicate calls to register the device, but this value is never set to 0 even on unregister of the device. Because of this, any attempt to call cpuidle_register_device after a call to cpuidle_unregister_device will fail which shouldn't be the case. To prevent this, set registered to 0 when the device is unregistered. Fixes: c878a52d3c7c (cpuidle: Check if device is already registered) Signed-off-by: Dave Gerlach Acked-by: Daniel Lezcano Signed-off-by: Rafael J. Wysocki Signed-off-by: Greg Kroah-Hartman --- drivers/cpuidle/cpuidle.c | 2 ++ 1 file changed, 2 insertions(+) --- a/drivers/cpuidle/cpuidle.c +++ b/drivers/cpuidle/cpuidle.c @@ -313,6 +313,8 @@ static void __cpuidle_unregister_device( list_del(&dev->device_list); per_cpu(cpuidle_devices, dev->cpu) = NULL; module_put(drv->owner); + + dev->registered = 0; } static void __cpuidle_device_init(struct cpuidle_device *dev) Patches currently in stable-queue which might be from d-gerlach@ti.com are queue-3.14/cpuidle-indicate-when-a-device-has-been-unregistered.patch