From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from bh-25.webhostbox.net (bh-25.webhostbox.net [208.91.199.152]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 14F071A03A6 for ; Tue, 7 Oct 2014 16:30:18 +1100 (EST) Received: from mailnull by bh-25.webhostbox.net with sa-checked (Exim 4.82) (envelope-from ) id 1XbNLj-002eKv-LV for linuxppc-dev@lists.ozlabs.org; Tue, 07 Oct 2014 05:30:15 +0000 From: Guenter Roeck To: linux-kernel@vger.kernel.org Subject: [PATCH 26/44] x86: iris: Register with kernel poweroff handler Date: Mon, 6 Oct 2014 22:28:28 -0700 Message-Id: <1412659726-29957-27-git-send-email-linux@roeck-us.net> In-Reply-To: <1412659726-29957-1-git-send-email-linux@roeck-us.net> References: <1412659726-29957-1-git-send-email-linux@roeck-us.net> Cc: linux-m32r-ja@ml.linux-m32r.org, linux-mips@linux-mips.org, linux-efi@vger.kernel.org, linux-ia64@vger.kernel.org, linux-xtensa@linux-xtensa.org, "H. Peter Anvin" , Thomas Gleixner , devel@driverdev.osuosl.org, linux-s390@vger.kernel.org, lguest@lists.ozlabs.org, linux-c6x-dev@linux-c6x.org, linux-hexagon@vger.kernel.org, linux-sh@vger.kernel.org, linux-acpi@vger.kernel.org, Ingo Molnar , xen-devel@lists.xenproject.org, Guenter Roeck , devicetree@vger.kernel.org, user-mode-linux-devel@lists.sourceforge.net, linux-pm@vger.kernel.org, adi-buildroot-devel@lists.sourceforge.net, linux-m68k@lists.linux-m68k.org, linux-am33-list@redhat.com, linux-tegra@vger.kernel.org, openipmi-developer@lists.sourceforge.net, linux-metag@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-parisc@vger.kernel.org, linux-cris-kernel@axis.com, linux-alpha@vger.kernel.org, linuxppc-dev@lists.ozlabs.org List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Register with kernel poweroff handler instead of setting pm_power_off directly. Register with high priority value of 192 to reflect that the original code overwrites existing poweroff handlers. Cc: Thomas Gleixner Cc: Ingo Molnar Cc: H. Peter Anvin Signed-off-by: Guenter Roeck --- arch/x86/platform/iris/iris.c | 25 +++++++++++++++++++------ 1 file changed, 19 insertions(+), 6 deletions(-) diff --git a/arch/x86/platform/iris/iris.c b/arch/x86/platform/iris/iris.c index 4d171e8..662c4e8 100644 --- a/arch/x86/platform/iris/iris.c +++ b/arch/x86/platform/iris/iris.c @@ -23,6 +23,7 @@ #include #include +#include #include #include #include @@ -47,15 +48,21 @@ static bool force; module_param(force, bool, 0); MODULE_PARM_DESC(force, "Set to one to force poweroff handler installation."); -static void (*old_pm_power_off)(void); - -static void iris_power_off(void) +static int iris_power_off(struct notifier_block *this, unsigned long unused1, + void *unused2) { outb(IRIS_GIO_PULSE, IRIS_GIO_OUTPUT); msleep(850); outb(IRIS_GIO_REST, IRIS_GIO_OUTPUT); + + return NOTIFY_DONE; } +static struct notifier_block iris_poweroff_nb = { + .notifier_call = iris_power_off, + .priority = 192, +}; + /* * Before installing the power_off handler, try to make sure the OS is * running on an Iris. Since Iris does not support DMI, this is done @@ -65,20 +72,26 @@ static void iris_power_off(void) static int iris_probe(struct platform_device *pdev) { unsigned char status = inb(IRIS_GIO_INPUT); + int ret; + if (status == IRIS_GIO_NODEV) { printk(KERN_ERR "This machine does not seem to be an Iris. " "Power off handler not installed.\n"); return -ENODEV; } - old_pm_power_off = pm_power_off; - pm_power_off = &iris_power_off; + + ret = register_poweroff_handler(&iris_poweroff_nb); + if (ret) { + dev_err(&pdev->dev, "Failed to register poweroff handler\n"); + return ret; + } printk(KERN_INFO "Iris power_off handler installed.\n"); return 0; } static int iris_remove(struct platform_device *pdev) { - pm_power_off = old_pm_power_off; + unregister_poweroff_handler(&iris_poweroff_nb); printk(KERN_INFO "Iris power_off handler uninstalled.\n"); return 0; } -- 1.9.1