From mboxrd@z Thu Jan 1 00:00:00 1970 From: Liam Breck Subject: [PATCH v5 3/4] power: bq24190_charger: Uniform pm_runtime_get() failure handling Date: Tue, 11 Apr 2017 04:59:56 -0700 Message-ID: <20170411115957.14253-4-liam@networkimprov.net> References: <20170411115957.14253-1-liam@networkimprov.net> Return-path: Received: from mail-pf0-f193.google.com ([209.85.192.193]:35766 "EHLO mail-pf0-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752134AbdDKMAE (ORCPT ); Tue, 11 Apr 2017 08:00:04 -0400 Received: by mail-pf0-f193.google.com with SMTP id a188so4746785pfa.2 for ; Tue, 11 Apr 2017 05:00:03 -0700 (PDT) In-Reply-To: <20170411115957.14253-1-liam@networkimprov.net> Sender: linux-pm-owner@vger.kernel.org List-Id: linux-pm@vger.kernel.org To: Sebastian Reichel , linux-pm@vger.kernel.org Cc: Tony Lindgren , Hans de Goede , Liam Breck From: Liam Breck On pm_runtime_get() failure, always emit an error message. Prevent unbalanced pm_runtime_get by calling: pm_runtime_put_noidle() in irq handler pm_runtime_put_sync() on any probe() failure Rename probe() out labels instead of renumbering them. Fixes: 13d6fa8447fa ("power: bq24190_charger: Use PM runtime autosuspend") Cc: Tony Lindgren Cc: Hans de Goede Signed-off-by: Liam Breck Acked-by: Tony Lindgren Reviewed-by: Hans de Goede --- drivers/power/supply/bq24190_charger.c | 37 +++++++++++++++++----------------- 1 file changed, 19 insertions(+), 18 deletions(-) diff --git a/drivers/power/supply/bq24190_charger.c b/drivers/power/supply/bq24190_charger.c index 69cd344..a904abb 100644 --- a/drivers/power/supply/bq24190_charger.c +++ b/drivers/power/supply/bq24190_charger.c @@ -1280,12 +1280,13 @@ static void bq24190_check_status(struct bq24190_dev_info *bdi) static irqreturn_t bq24190_irq_handler_thread(int irq, void *data) { struct bq24190_dev_info *bdi = data; - int ret; + int error; bdi->irq_event = true; - ret = pm_runtime_get_sync(bdi->dev); - if (ret < 0) { - dev_warn(bdi->dev, "pm_runtime_get failed: %i\n", ret); + error = pm_runtime_get_sync(bdi->dev); + if (error < 0) { + dev_warn(bdi->dev, "pm_runtime_get failed: %i\n", error); + pm_runtime_put_noidle(bdi->dev); return IRQ_NONE; } bq24190_check_status(bdi); @@ -1453,13 +1454,15 @@ static int bq24190_probe(struct i2c_client *client, pm_runtime_use_autosuspend(dev); pm_runtime_set_autosuspend_delay(dev, 600); ret = pm_runtime_get_sync(dev); - if (ret < 0) - goto out1; + if (ret < 0) { + dev_err(dev, "pm_runtime_get failed: %i\n", ret); + goto out_pmrt; + } ret = bq24190_hw_init(bdi); if (ret < 0) { dev_err(dev, "Hardware init failed\n"); - goto out2; + goto out_pmrt; } charger_cfg.drv_data = bdi; @@ -1470,7 +1473,7 @@ static int bq24190_probe(struct i2c_client *client, if (IS_ERR(bdi->charger)) { dev_err(dev, "Can't register charger\n"); ret = PTR_ERR(bdi->charger); - goto out2; + goto out_pmrt; } battery_cfg.drv_data = bdi; @@ -1479,13 +1482,13 @@ static int bq24190_probe(struct i2c_client *client, if (IS_ERR(bdi->battery)) { dev_err(dev, "Can't register battery\n"); ret = PTR_ERR(bdi->battery); - goto out3; + goto out_charger; } ret = bq24190_sysfs_create_group(bdi); if (ret) { dev_err(dev, "Can't create sysfs entries\n"); - goto out4; + goto out_battery; } bdi->initialized = true; @@ -1496,7 +1499,7 @@ static int bq24190_probe(struct i2c_client *client, "bq24190-charger", bdi); if (ret < 0) { dev_err(dev, "Can't set up irq handler\n"); - goto out5; + goto out_sysfs; } if (bdi->extcon) { @@ -1506,7 +1509,7 @@ static int bq24190_probe(struct i2c_client *client, &bdi->extcon_nb); if (ret) { dev_err(dev, "Can't register extcon\n"); - goto out5; + goto out_sysfs; } /* Sync initial cable state */ @@ -1520,19 +1523,17 @@ static int bq24190_probe(struct i2c_client *client, return 0; -out5: +out_sysfs: bq24190_sysfs_remove_group(bdi); -out4: +out_battery: power_supply_unregister(bdi->battery); -out3: +out_charger: power_supply_unregister(bdi->charger); -out2: +out_pmrt: pm_runtime_put_sync(dev); - -out1: pm_runtime_dont_use_autosuspend(dev); pm_runtime_disable(dev); return ret; -- 2.9.3