From mboxrd@z Thu Jan 1 00:00:00 1970 From: Zhang Rui Subject: [PATCH V2 3/3] Thermal: do thermal zone update after a cooling device registered Date: Wed, 25 Mar 2015 15:53:16 +0800 Message-ID: <1427269996-29501-4-git-send-email-rui.zhang@intel.com> References: <1427269996-29501-1-git-send-email-rui.zhang@intel.com> Return-path: Received: from mga01.intel.com ([192.55.52.88]:44556 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751347AbbCYHy6 (ORCPT ); Wed, 25 Mar 2015 03:54:58 -0400 In-Reply-To: <1427269996-29501-1-git-send-email-rui.zhang@intel.com> Sender: linux-pm-owner@vger.kernel.org List-Id: linux-pm@vger.kernel.org To: linux-pm@vger.kernel.org Cc: Zhang Rui , stable@vger.kernel.org When a new cooling device is registered, we need to update the thermal zone to set the new registered cooling device to a proper state. This fixes a problem that the system is cool, while the fan devices are left running on full speed after boot, if fan device is registered after thermal zone device. CC: #3.18+ Reference:https://bugzilla.kernel.org/show_bug.cgi?id=92431 Tested-by: Manuel Krause Tested-by: szegad Tested-by: prash Tested-by: amish Signed-off-by: Zhang Rui --- drivers/thermal/thermal_core.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c index 2f3c829..f872744 100644 --- a/drivers/thermal/thermal_core.c +++ b/drivers/thermal/thermal_core.c @@ -1140,6 +1140,7 @@ __thermal_cooling_device_register(struct device_node *np, const struct thermal_cooling_device_ops *ops) { struct thermal_cooling_device *cdev; + struct thermal_instance *pos, *next; int result; if (type && strlen(type) >= THERMAL_NAME_LENGTH) @@ -1184,6 +1185,15 @@ __thermal_cooling_device_register(struct device_node *np, /* Update binding information for 'this' new cdev */ bind_cdev(cdev); + list_for_each_entry_safe(pos, next, &cdev->thermal_instances, cdev_node) { + if (next->cdev_node.next == &cdev->thermal_instances) { + thermal_zone_device_update(next->tz); + break; + } + if (pos->tz != next->tz) + thermal_zone_device_update(pos->tz); + } + return cdev; } -- 1.9.1