Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751962AbaKFQoW (ORCPT ); Thu, 6 Nov 2014 11:44:22 -0500 Received: from bh-25.webhostbox.net ([208.91.199.152]:56151 "EHLO bh-25.webhostbox.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751156AbaKFQoH (ORCPT ); Thu, 6 Nov 2014 11:44:07 -0500 From: Guenter Roeck To: linux-kernel@vger.kernel.org Cc: linux-pm@vger.kernel.org, Guenter Roeck , Lee Jones , Samuel Ortiz Subject: [PATCH v5 11/48] mfd: retu: Register with kernel power-off handler Date: Thu, 6 Nov 2014 08:42:55 -0800 Message-Id: <1415292213-28652-12-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=0001.0A020209.545BA557.0144,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: 59 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 low priority to reflect that the original code only sets pm_power_off if it was not already set. Cc: Lee Jones Cc: Samuel Ortiz Acked-by: Lee Jones 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 - Use devm_register_power_off_handler - Use dev_warn instead of dev_err drivers/mfd/retu-mfd.c | 29 +++++++++++++++-------------- 1 file changed, 15 insertions(+), 14 deletions(-) diff --git a/drivers/mfd/retu-mfd.c b/drivers/mfd/retu-mfd.c index 663f8a3..30e746b 100644 --- a/drivers/mfd/retu-mfd.c +++ b/drivers/mfd/retu-mfd.c @@ -22,6 +22,7 @@ #include #include #include +#include #include #include #include @@ -43,6 +44,7 @@ struct retu_dev { struct device *dev; struct mutex mutex; struct regmap_irq_chip_data *irq_data; + struct power_off_handler_block power_off_hb; }; static struct resource retu_pwrbutton_res[] = { @@ -81,9 +83,6 @@ static struct regmap_irq_chip retu_irq_chip = { .ack_base = RETU_REG_IDR, }; -/* Retu device registered for the power off. */ -static struct retu_dev *retu_pm_power_off; - static struct resource tahvo_usb_res[] = { { .name = "tahvo-usb", @@ -165,12 +164,13 @@ int retu_write(struct retu_dev *rdev, u8 reg, u16 data) } EXPORT_SYMBOL_GPL(retu_write); -static void retu_power_off(void) +static void retu_power_off(struct power_off_handler_block *this) { - struct retu_dev *rdev = retu_pm_power_off; + struct retu_dev *rdev = container_of(this, struct retu_dev, + power_off_hb); int reg; - mutex_lock(&retu_pm_power_off->mutex); + mutex_lock(&rdev->mutex); /* Ignore power button state */ regmap_read(rdev->regmap, RETU_REG_CC1, ®); @@ -183,7 +183,7 @@ static void retu_power_off(void) for (;;) cpu_relax(); - mutex_unlock(&retu_pm_power_off->mutex); + mutex_unlock(&rdev->mutex); } static int retu_regmap_read(void *context, const void *reg, size_t reg_size, @@ -279,9 +279,14 @@ static int retu_probe(struct i2c_client *i2c, const struct i2c_device_id *id) return ret; } - if (i2c->addr == 1 && !pm_power_off) { - retu_pm_power_off = rdev; - pm_power_off = retu_power_off; + if (i2c->addr == 1) { + rdev->power_off_hb.handler = retu_power_off; + rdev->power_off_hb.priority = POWER_OFF_PRIORITY_LOW; + ret = devm_register_power_off_handler(rdev->dev, + &rdev->power_off_hb); + if (ret) + dev_warn(rdev->dev, + "Failed to register power-off handler\n"); } return 0; @@ -291,10 +296,6 @@ static int retu_remove(struct i2c_client *i2c) { struct retu_dev *rdev = i2c_get_clientdata(i2c); - if (retu_pm_power_off == rdev) { - pm_power_off = NULL; - retu_pm_power_off = NULL; - } mfd_remove_devices(rdev->dev); regmap_del_irq_chip(i2c->irq, rdev->irq_data); -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/