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iio: adc: sc27xx: Use devm_hwspin_lock_request_specific() to simplify code 

Change to use devm_hwspin_lock_request_specific() to help to simplify the
cleanup code for drivers requesting one hwlock.

Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Baolin Wang 2019-09-27 10:41:19 +08:00 committed by Jonathan Cameron
parent 0c8a6e72f3
commit 420119fcc5
1 changed files with 1 additions and 15 deletions
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16
drivers/iio/adc/sc27xx_adc.c
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@ -477,13 +477,6 @@ static void sc27xx_adc_disable(void *_data)
SC27XX_MODULE_ADC_EN, 0); SC27XX_MODULE_ADC_EN, 0);
} }
static void sc27xx_adc_free_hwlock(void *_data)
{
struct hwspinlock *hwlock = _data;
hwspin_lock_free(hwlock);
}
static int sc27xx_adc_probe(struct platform_device *pdev) static int sc27xx_adc_probe(struct platform_device *pdev)
{ {
struct device *dev = &pdev->dev; struct device *dev = &pdev->dev;
@ -520,19 +513,12 @@ static int sc27xx_adc_probe(struct platform_device *pdev)
return ret; return ret;
} }
sc27xx_data->hwlock = hwspin_lock_request_specific(ret); sc27xx_data->hwlock = devm_hwspin_lock_request_specific(dev, ret);
if (!sc27xx_data->hwlock) { if (!sc27xx_data->hwlock) {
dev_err(dev, "failed to request hwspinlock\n"); dev_err(dev, "failed to request hwspinlock\n");
return -ENXIO; return -ENXIO;
} }
ret = devm_add_action_or_reset(dev, sc27xx_adc_free_hwlock,
sc27xx_data->hwlock);
if (ret) {
dev_err(dev, "failed to add hwspinlock action\n");
return ret;
}
sc27xx_data->dev = dev; sc27xx_data->dev = dev;
ret = sc27xx_adc_enable(sc27xx_data); ret = sc27xx_adc_enable(sc27xx_data);