From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752325AbaKFQpM (ORCPT ); Thu, 6 Nov 2014 11:45:12 -0500 Received: from bh-25.webhostbox.net ([208.91.199.152]:56400 "EHLO bh-25.webhostbox.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752202AbaKFQoz (ORCPT ); Thu, 6 Nov 2014 11:44:55 -0500 From: Guenter Roeck To: linux-kernel@vger.kernel.org Cc: linux-pm@vger.kernel.org, Guenter Roeck , Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , x86@kernel.org Subject: [PATCH v5 32/48] x86: olpc: Register xo1 power-off handler with kernel power-off handler Date: Thu, 6 Nov 2014 08:43:16 -0800 Message-Id: <1415292213-28652-33-git-send-email-linux@roeck-us.net> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1415292213-28652-1-git-send-email-linux@roeck-us.net> References: <1415292213-28652-1-git-send-email-linux@roeck-us.net> X-Authenticated_sender: guenter@roeck-us.net X-OutGoing-Spam-Status: No, score=-1.0 X-CTCH-PVer: 0000001 X-CTCH-Spam: Unknown X-CTCH-VOD: Unknown X-CTCH-Flags: 0 X-CTCH-RefID: str=0001.0A020209.545BA587.00EC,ss=1,re=0.001,recu=0.000,reip=0.000,cl=1,cld=1,fgs=0 X-CTCH-Score: 0.001 X-CTCH-ScoreCust: 0.000 X-CTCH-Rules: C_4847, X-CTCH-SenderID: linux@roeck-us.net X-CTCH-SenderID-Flags: 0 X-CTCH-SenderID-TotalMessages: 174 X-CTCH-SenderID-TotalSpam: 0 X-CTCH-SenderID-TotalSuspected: 0 X-CTCH-SenderID-TotalConfirmed: 0 X-CTCH-SenderID-TotalBulk: 0 X-CTCH-SenderID-TotalVirus: 0 X-CTCH-SenderID-TotalRecipients: 0 X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - bh-25.webhostbox.net X-AntiAbuse: Original Domain - vger.kernel.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - roeck-us.net X-Get-Message-Sender-Via: bh-25.webhostbox.net: mailgid no entry from get_relayhosts_entry X-Source: X-Source-Args: X-Source-Dir: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Register with kernel power-off handler instead of setting pm_power_off directly. Register with high priority to reflect that the driver explicitly wants to override default power-off handlers. Cc: Thomas Gleixner Cc: Ingo Molnar Cc: H. Peter Anvin Acked-by: Thomas Gleixner Signed-off-by: Guenter Roeck --- v5: - Rebase to v3.18-rc3 v4: - Do not use notifiers but internal functions and data structures to manage the list of power-off handlers. Drop unused parameters from callbacks, and make the power-off function type void v3: - Replace poweroff in all newly introduced variables and in text with power_off or power-off as appropriate - Replace POWEROFF_PRIORITY_xxx with POWER_OFF_PRIORITY_xxx v2: - Use define to specify poweroff handler priority arch/x86/platform/olpc/olpc-xo1-pm.c | 16 +++++++++++++--- 1 file changed, 13 insertions(+), 3 deletions(-) diff --git a/arch/x86/platform/olpc/olpc-xo1-pm.c b/arch/x86/platform/olpc/olpc-xo1-pm.c index a9acde7..7a4878eb 100644 --- a/arch/x86/platform/olpc/olpc-xo1-pm.c +++ b/arch/x86/platform/olpc/olpc-xo1-pm.c @@ -92,7 +92,7 @@ asmlinkage __visible int xo1_do_sleep(u8 sleep_state) return 0; } -static void xo1_power_off(void) +static void xo1_power_off(struct power_off_handler_block *this) { printk(KERN_INFO "OLPC XO-1 power off sequence...\n"); @@ -110,6 +110,11 @@ static void xo1_power_off(void) outl(0x00002000, acpi_base + CS5536_PM1_CNT); } +static struct power_off_handler_block xo1_power_off_hb = { + .handler = xo1_power_off, + .priority = POWER_OFF_PRIORITY_HIGH, +}; + static int xo1_power_state_valid(suspend_state_t pm_state) { /* suspend-to-RAM only */ @@ -146,8 +151,12 @@ static int xo1_pm_probe(struct platform_device *pdev) /* If we have both addresses, we can override the poweroff hook */ if (pms_base && acpi_base) { + err = register_power_off_handler(&xo1_power_off_hb); + if (err) { + dev_err(&pdev->dev, "Failed to register power-off handler\n"); + return err; + } suspend_set_ops(&xo1_suspend_ops); - pm_power_off = xo1_power_off; printk(KERN_INFO "OLPC XO-1 support registered\n"); } @@ -158,12 +167,13 @@ static int xo1_pm_remove(struct platform_device *pdev) { mfd_cell_disable(pdev); + unregister_power_off_handler(&xo1_power_off_hb); + if (strcmp(pdev->name, "cs5535-pms") == 0) pms_base = 0; else if (strcmp(pdev->name, "olpc-xo1-pm-acpi") == 0) acpi_base = 0; - pm_power_off = NULL; return 0; } -- 1.9.1