From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754199Ab3BCO4H (ORCPT ); Sun, 3 Feb 2013 09:56:07 -0500 Received: from shadbolt.e.decadent.org.uk ([88.96.1.126]:34274 "EHLO shadbolt.e.decadent.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754092Ab3BCO4D (ORCPT ); Sun, 3 Feb 2013 09:56:03 -0500 Message-Id: <20130203144648.493915164@decadent.org.uk> User-Agent: quilt/0.60-1 Date: Sun, 03 Feb 2013 15:47:34 +0100 From: Ben Hutchings To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: akpm@linux-foundation.org, Bjorn Helgaas , Kenji Kaneshige Subject: [ 050/128] PCI: shpchp: Handle push button event asynchronously In-Reply-To: <20130203144644.035172954@decadent.org.uk> X-SA-Exim-Connect-IP: 151.216.67.5 X-SA-Exim-Mail-From: ben@decadent.org.uk X-SA-Exim-Scanned: No (on shadbolt.decadent.org.uk); SAEximRunCond expanded to false Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.2-stable review patch. If anyone has any objections, please let me know. ------------------ From: Bjorn Helgaas commit d347e75847c1fb299c97736638f45e6ea39702d4 upstream. Use non-ordered workqueue for attention button events. Attention button events on each slot can be handled asynchronously. So we should use non-ordered workqueue. This patch also removes ordered workqueue in shpchp as a result. 486b10b9f4 ("PCI: pciehp: Handle push button event asynchronously") made the same change to pciehp. I split this out from a patch by Yijing Wang so we fix one thing at a time and to make the shpchp history correspond more closely with the pciehp history. Signed-off-by: Bjorn Helgaas CC: Kenji Kaneshige Signed-off-by: Ben Hutchings --- drivers/pci/hotplug/shpchp.h | 1 - drivers/pci/hotplug/shpchp_core.c | 10 ---------- drivers/pci/hotplug/shpchp_ctrl.c | 2 +- 3 files changed, 1 insertion(+), 12 deletions(-) --- a/drivers/pci/hotplug/shpchp.h +++ b/drivers/pci/hotplug/shpchp.h @@ -47,7 +47,6 @@ extern int shpchp_poll_mode; extern int shpchp_poll_time; extern int shpchp_debug; extern struct workqueue_struct *shpchp_wq; -extern struct workqueue_struct *shpchp_ordered_wq; #define dbg(format, arg...) \ do { \ --- a/drivers/pci/hotplug/shpchp_core.c +++ b/drivers/pci/hotplug/shpchp_core.c @@ -40,7 +40,6 @@ int shpchp_debug; int shpchp_poll_mode; int shpchp_poll_time; struct workqueue_struct *shpchp_wq; -struct workqueue_struct *shpchp_ordered_wq; #define DRIVER_VERSION "0.4" #define DRIVER_AUTHOR "Dan Zink , Greg Kroah-Hartman , Dely Sy " @@ -175,7 +174,6 @@ void cleanup_slots(struct controller *ct list_del(&slot->slot_list); cancel_delayed_work(&slot->work); flush_workqueue(shpchp_wq); - flush_workqueue(shpchp_ordered_wq); pci_hp_deregister(slot->hotplug_slot); } } @@ -364,17 +362,10 @@ static int __init shpcd_init(void) if (!shpchp_wq) return -ENOMEM; - shpchp_ordered_wq = alloc_ordered_workqueue("shpchp_ordered", 0); - if (!shpchp_ordered_wq) { - destroy_workqueue(shpchp_wq); - return -ENOMEM; - } - retval = pci_register_driver(&shpc_driver); dbg("%s: pci_register_driver = %d\n", __func__, retval); info(DRIVER_DESC " version: " DRIVER_VERSION "\n"); if (retval) { - destroy_workqueue(shpchp_ordered_wq); destroy_workqueue(shpchp_wq); } return retval; @@ -384,7 +375,6 @@ static void __exit shpcd_cleanup(void) { dbg("unload_shpchpd()\n"); pci_unregister_driver(&shpc_driver); - destroy_workqueue(shpchp_ordered_wq); destroy_workqueue(shpchp_wq); info(DRIVER_DESC " version: " DRIVER_VERSION " unloaded\n"); } --- a/drivers/pci/hotplug/shpchp_ctrl.c +++ b/drivers/pci/hotplug/shpchp_ctrl.c @@ -456,7 +456,7 @@ void shpchp_queue_pushbutton_work(struct kfree(info); goto out; } - queue_work(shpchp_ordered_wq, &info->work); + queue_work(shpchp_wq, &info->work); out: mutex_unlock(&p_slot->lock); }