From: Brian Masney Date: Sat, 12 Nov 2016 18:19:18 +0000 (-0500) Subject: staging: iio: tsl2583: remove unnecessary chip status checks in suspend/resume X-Git-Tag: v4.10-rc1~148^2~229^2~23 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=2ff8a35bd79e5a67137f6201b7d44515f19cf726;p=karo-tx-linux.git staging: iio: tsl2583: remove unnecessary chip status checks in suspend/resume The device probing and the suspend/resume code checks a flag internal to the driver that determines whether or not the chip is in a working state. These checks are not needed. This patch removes the unnecessary checks. It will do no harm to the hardware if the chip is reinitialized if it is already powered on. Signed-off-by: Brian Masney Signed-off-by: Jonathan Cameron --- diff --git a/drivers/staging/iio/light/tsl2583.c b/drivers/staging/iio/light/tsl2583.c index a550023fa910..40aa78e8c867 100644 --- a/drivers/staging/iio/light/tsl2583.c +++ b/drivers/staging/iio/light/tsl2583.c @@ -412,13 +412,6 @@ static int tsl2583_chip_init_and_power_on(struct iio_dev *indio_dev) struct tsl2583_chip *chip = iio_priv(indio_dev); int ret; - /* and make sure we're not already on */ - if (chip->taos_chip_status == TSL258X_CHIP_WORKING) { - /* if forcing a register update - turn off, then on */ - dev_info(&chip->client->dev, "device is already enabled\n"); - return -EINVAL; - } - /* Power on the device; ADC off. */ ret = tsl2583_set_power_state(chip, TSL258X_CNTL_PWR_ON); if (ret < 0) @@ -841,10 +834,8 @@ static int __maybe_unused taos_suspend(struct device *dev) mutex_lock(&chip->als_mutex); - if (chip->taos_chip_status == TSL258X_CHIP_WORKING) { - ret = tsl2583_set_power_state(chip, TSL258X_CNTL_PWR_OFF); - chip->taos_chip_status = TSL258X_CHIP_SUSPENDED; - } + ret = tsl2583_set_power_state(chip, TSL258X_CNTL_PWR_OFF); + chip->taos_chip_status = TSL258X_CHIP_SUSPENDED; mutex_unlock(&chip->als_mutex); return ret; @@ -858,8 +849,7 @@ static int __maybe_unused taos_resume(struct device *dev) mutex_lock(&chip->als_mutex); - if (chip->taos_chip_status == TSL258X_CHIP_SUSPENDED) - ret = tsl2583_chip_init_and_power_on(indio_dev); + ret = tsl2583_chip_init_and_power_on(indio_dev); mutex_unlock(&chip->als_mutex); return ret;