From 3525e5c5b3dea03ff999c53be6392819165df820 Mon Sep 17 00:00:00 2001 From: Chris Lapa Date: Fri, 24 Jun 2016 12:26:10 +1000 Subject: [PATCH] max8903: removes non zero validity checks on gpios. Prior to this commit a zero gpio was treated as invalid. Whereas gpio_is_valid() will treat a zero gpio as valid. This commit removes the confusion and explicitly uses gpio_is_valid() throughout. Which in turn results in several of the error messages becoming redundant and thus removed. Signed-off-by: Chris Lapa Reviewed-by: Krzysztof Kozlowski Signed-off-by: Sebastian Reichel --- drivers/power/max8903_charger.c | 115 +++++++++++++------------------- 1 file changed, 47 insertions(+), 68 deletions(-) diff --git a/drivers/power/max8903_charger.c b/drivers/power/max8903_charger.c index 3f35593443b3..643a87aac60f 100644 --- a/drivers/power/max8903_charger.c +++ b/drivers/power/max8903_charger.c @@ -53,7 +53,7 @@ static int max8903_get_property(struct power_supply *psy, switch (psp) { case POWER_SUPPLY_PROP_STATUS: val->intval = POWER_SUPPLY_STATUS_UNKNOWN; - if (data->pdata->chg) { + if (gpio_is_valid(data->pdata->chg)) { if (gpio_get_value(data->pdata->chg) == 0) val->intval = POWER_SUPPLY_STATUS_CHARGING; else if (data->usb_in || data->ta_in) @@ -93,11 +93,11 @@ static irqreturn_t max8903_dcin(int irq, void *_data) data->ta_in = ta_in; /* Set Current-Limit-Mode 1:DC 0:USB */ - if (pdata->dcm) + if (gpio_is_valid(pdata->dcm)) gpio_set_value(pdata->dcm, ta_in ? 1 : 0); /* Charger Enable / Disable (cen is negated) */ - if (pdata->cen) + if (gpio_is_valid(pdata->cen)) gpio_set_value(pdata->cen, ta_in ? 0 : (data->usb_in ? 0 : 1)); @@ -136,7 +136,7 @@ static irqreturn_t max8903_usbin(int irq, void *_data) /* Do not touch Current-Limit-Mode */ /* Charger Enable / Disable (cen is negated) */ - if (pdata->cen) + if (gpio_is_valid(pdata->cen)) gpio_set_value(pdata->cen, usb_in ? 0 : (data->ta_in ? 0 : 1)); @@ -190,7 +190,7 @@ static int max8903_setup_gpios(struct platform_device *pdev) int usb_in = 0; if (pdata->dc_valid) { - if (pdata->dok && gpio_is_valid(pdata->dok)) { + if (gpio_is_valid(pdata->dok)) { ret = devm_gpio_request(dev, pdata->dok, data->psy_desc.name); if (ret) { @@ -208,27 +208,21 @@ static int max8903_setup_gpios(struct platform_device *pdev) } } - if (pdata->dcm) { - if (gpio_is_valid(pdata->dcm)) { - ret = devm_gpio_request(dev, pdata->dcm, - data->psy_desc.name); - if (ret) { - dev_err(dev, - "Failed GPIO request for dcm: %d err %d\n", - pdata->dcm, ret); - return ret; - } - - gpio = pdata->dcm; /* Output */ - gpio_set_value(gpio, ta_in); - } else { - dev_err(dev, "Invalid pin: dcm.\n"); - return -EINVAL; + if (gpio_is_valid(pdata->dcm)) { + ret = devm_gpio_request(dev, pdata->dcm, data->psy_desc.name); + if (ret) { + dev_err(dev, + "Failed GPIO request for dcm: %d err %d\n", + pdata->dcm, ret); + return ret; } + + gpio = pdata->dcm; /* Output */ + gpio_set_value(gpio, ta_in); } if (pdata->usb_valid) { - if (pdata->uok && gpio_is_valid(pdata->uok)) { + if (gpio_is_valid(pdata->uok)) { ret = devm_gpio_request(dev, pdata->uok, data->psy_desc.name); if (ret) { @@ -247,60 +241,45 @@ static int max8903_setup_gpios(struct platform_device *pdev) } } - if (pdata->cen) { - if (gpio_is_valid(pdata->cen)) { - ret = devm_gpio_request(dev, pdata->cen, - data->psy_desc.name); - if (ret) { - dev_err(dev, - "Failed GPIO request for cen: %d err %d\n", - pdata->cen, ret); - return ret; - } - - gpio_set_value(pdata->cen, (ta_in || usb_in) ? 0 : 1); - } else { - dev_err(dev, "Invalid pin: cen.\n"); - return -EINVAL; + if (gpio_is_valid(pdata->cen)) { + ret = devm_gpio_request(dev, pdata->cen, data->psy_desc.name); + if (ret) { + dev_err(dev, + "Failed GPIO request for cen: %d err %d\n", + pdata->cen, ret); + return ret; } + + gpio_set_value(pdata->cen, (ta_in || usb_in) ? 0 : 1); } - if (pdata->chg) { - if (gpio_is_valid(pdata->chg)) { - ret = devm_gpio_request(dev, pdata->chg, - data->psy_desc.name); - if (ret) { - dev_err(dev, - "Failed GPIO request for chg: %d err %d\n", - pdata->chg, ret); - return ret; - } + if (gpio_is_valid(pdata->chg)) { + ret = devm_gpio_request(dev, pdata->chg, data->psy_desc.name); + if (ret) { + dev_err(dev, + "Failed GPIO request for chg: %d err %d\n", + pdata->chg, ret); + return ret; } } - if (pdata->flt) { - if (gpio_is_valid(pdata->flt)) { - ret = devm_gpio_request(dev, pdata->flt, - data->psy_desc.name); - if (ret) { - dev_err(dev, - "Failed GPIO request for flt: %d err %d\n", - pdata->flt, ret); - return ret; - } + if (gpio_is_valid(pdata->flt)) { + ret = devm_gpio_request(dev, pdata->flt, data->psy_desc.name); + if (ret) { + dev_err(dev, + "Failed GPIO request for flt: %d err %d\n", + pdata->flt, ret); + return ret; } } - if (pdata->usus) { - if (gpio_is_valid(pdata->usus)) { - ret = devm_gpio_request(dev, pdata->usus, - data->psy_desc.name); - if (ret) { - dev_err(dev, - "Failed GPIO request for usus: %d err %d\n", - pdata->usus, ret); - return ret; - } + if (gpio_is_valid(pdata->usus)) { + ret = devm_gpio_request(dev, pdata->usus, data->psy_desc.name); + if (ret) { + dev_err(dev, + "Failed GPIO request for usus: %d err %d\n", + pdata->usus, ret); + return ret; } } @@ -385,7 +364,7 @@ static int max8903_probe(struct platform_device *pdev) } } - if (pdata->flt) { + if (gpio_is_valid(pdata->flt)) { ret = devm_request_threaded_irq(dev, gpio_to_irq(pdata->flt), NULL, max8903_fault, IRQF_TRIGGER_FALLING | -- 2.39.5