linux-kernel - [PATCH 2/6] staging: iio: tsl2x7x: remove redundant power

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Date:   Thu, 29 Jun 2017 13:03:48 -0400
From:   Brian Masney <masneyb@...tation.org>
To:     jic23@...nel.org, linux-iio@...r.kernel.org
Cc:     gregkh@...uxfoundation.org, devel@...verdev.osuosl.org,
        knaack.h@....de, lars@...afoo.de, pmeerw@...erw.net,
        linux-kernel@...r.kernel.org, Jon.Brenner@....com
Subject: [PATCH 2/6] staging: iio: tsl2x7x: remove redundant power_state sysfs attribute

The TSL2X7X driver has a custom power_state sysfs attribute. Remove this
attribute since the runtime power management code provides a sysfs
attribute to control the power state of the device.

Signed-off-by: Brian Masney <masneyb@...tation.org>
---
 drivers/staging/iio/light/tsl2x7x.c | 34 ----------------------------------
 1 file changed, 34 deletions(-)

diff --git a/drivers/staging/iio/light/tsl2x7x.c b/drivers/staging/iio/light/tsl2x7x.c
index 3f4f1f3..3ea29e2 100644
--- a/drivers/staging/iio/light/tsl2x7x.c
+++ b/drivers/staging/iio/light/tsl2x7x.c
@@ -915,33 +915,6 @@ static void tsl2x7x_prox_cal(struct iio_dev *indio_dev)
 		tsl2x7x_chip_on(indio_dev);
 }
 
-static ssize_t power_state_show(struct device *dev,
-					struct device_attribute *attr,
-					char *buf)
-{
-	struct tsl2X7X_chip *chip = iio_priv(dev_to_iio_dev(dev));
-
-	return snprintf(buf, PAGE_SIZE, "%d\n", chip->tsl2x7x_chip_status);
-}
-
-static ssize_t power_state_store(struct device *dev,
-					 struct device_attribute *attr,
-					 const char *buf, size_t len)
-{
-	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
-	bool value;
-
-	if (strtobool(buf, &value))
-		return -EINVAL;
-
-	if (value)
-		tsl2x7x_chip_on(indio_dev);
-	else
-		tsl2x7x_chip_off(indio_dev);
-
-	return len;
-}
-
 static ssize_t in_illuminance0_calibscale_available_show(struct device *dev,
 					   struct device_attribute *attr,
 					   char *buf)
@@ -1494,8 +1467,6 @@ static int tsl2x7x_write_raw(struct iio_dev *indio_dev,
 	return 0;
 }
 
-static DEVICE_ATTR_RW(power_state);
-
 static DEVICE_ATTR_RO(in_proximity0_calibscale_available);
 
 static DEVICE_ATTR_RO(in_illuminance0_calibscale_available);
@@ -1580,7 +1551,6 @@ static irqreturn_t tsl2x7x_event_handler(int irq, void *private)
 }
 
 static struct attribute *tsl2x7x_ALS_device_attrs[] = {
-	&dev_attr_power_state.attr,
 	&dev_attr_in_illuminance0_calibscale_available.attr,
 	&dev_attr_in_illuminance0_integration_time.attr,
 	&iio_const_attr_in_illuminance0_integration_time_available.dev_attr.attr,
@@ -1591,13 +1561,11 @@ static struct attribute *tsl2x7x_ALS_device_attrs[] = {
 };
 
 static struct attribute *tsl2x7x_PRX_device_attrs[] = {
-	&dev_attr_power_state.attr,
 	&dev_attr_in_proximity0_calibrate.attr,
 	NULL
 };
 
 static struct attribute *tsl2x7x_ALSPRX_device_attrs[] = {
-	&dev_attr_power_state.attr,
 	&dev_attr_in_illuminance0_calibscale_available.attr,
 	&dev_attr_in_illuminance0_integration_time.attr,
 	&iio_const_attr_in_illuminance0_integration_time_available.dev_attr.attr,
@@ -1609,14 +1577,12 @@ static struct attribute *tsl2x7x_ALSPRX_device_attrs[] = {
 };
 
 static struct attribute *tsl2x7x_PRX2_device_attrs[] = {
-	&dev_attr_power_state.attr,
 	&dev_attr_in_proximity0_calibrate.attr,
 	&dev_attr_in_proximity0_calibscale_available.attr,
 	NULL
 };
 
 static struct attribute *tsl2x7x_ALSPRX2_device_attrs[] = {
-	&dev_attr_power_state.attr,
 	&dev_attr_in_illuminance0_calibscale_available.attr,
 	&dev_attr_in_illuminance0_integration_time.attr,
 	&iio_const_attr_in_illuminance0_integration_time_available.dev_attr.attr,
-- 
2.9.4