iio: Use octal permissions and DEVICE_ATTR_{RO,RW}.

As reported by checkpatch.pl.  Where possible use DEVICE_ATTR_RO(),
DEVICE_ATTR_RW(), and __ATTR_RO().  Change function names to be
<var>_show() for read and <var>_store() for write.

Suggested-by: Joe Perches <joe@perches.com>
Suggested-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Joe Simmons-Talbott <joetalbott@gmail.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20220601185414.251571-1-joetalbott@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

1 files changed, 21 insertions, 35 deletions

diff --git a/drivers/iio/industrialio-buffer.c b/drivers/iio/industrialio-buffer.c
index 06141ca27e1f..3d2b7712a8e6 100644
--- a/drivers/iio/industrialio-buffer.c
+++ b/drivers/iio/industrialio-buffer.c
@@ -630,18 +630,16 @@ static int iio_buffer_add_channel_sysfs(struct iio_dev *indio_dev,
 	return ret;
 }
 
-static ssize_t iio_buffer_read_length(struct device *dev,
-				      struct device_attribute *attr,
-				      char *buf)
+static ssize_t length_show(struct device *dev, struct device_attribute *attr,
+			   char *buf)
 {
 	struct iio_buffer *buffer = to_iio_dev_attr(attr)->buffer;
 
 	return sysfs_emit(buf, "%d\n", buffer->length);
 }
 
-static ssize_t iio_buffer_write_length(struct device *dev,
-				       struct device_attribute *attr,
-				       const char *buf, size_t len)
+static ssize_t length_store(struct device *dev, struct device_attribute *attr,
+			    const char *buf, size_t len)
 {
 	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
 	struct iio_buffer *buffer = to_iio_dev_attr(attr)->buffer;
@@ -672,9 +670,8 @@ out:
 	return ret ? ret : len;
 }
 
-static ssize_t iio_buffer_show_enable(struct device *dev,
-				      struct device_attribute *attr,
-				      char *buf)
+static ssize_t enable_show(struct device *dev, struct device_attribute *attr,
+			   char *buf)
 {
 	struct iio_buffer *buffer = to_iio_dev_attr(attr)->buffer;
 
@@ -1292,10 +1289,8 @@ void iio_disable_all_buffers(struct iio_dev *indio_dev)
 	iio_buffer_deactivate_all(indio_dev);
 }
 
-static ssize_t iio_buffer_store_enable(struct device *dev,
-				       struct device_attribute *attr,
-				       const char *buf,
-				       size_t len)
+static ssize_t enable_store(struct device *dev, struct device_attribute *attr,
+			    const char *buf, size_t len)
 {
 	int ret;
 	bool requested_state;
@@ -1325,19 +1320,17 @@ done:
 	return (ret < 0) ? ret : len;
 }
 
-static ssize_t iio_buffer_show_watermark(struct device *dev,
-					 struct device_attribute *attr,
-					 char *buf)
+static ssize_t watermark_show(struct device *dev, struct device_attribute *attr,
+			      char *buf)
 {
 	struct iio_buffer *buffer = to_iio_dev_attr(attr)->buffer;
 
 	return sysfs_emit(buf, "%u\n", buffer->watermark);
 }
 
-static ssize_t iio_buffer_store_watermark(struct device *dev,
-					  struct device_attribute *attr,
-					  const char *buf,
-					  size_t len)
+static ssize_t watermark_store(struct device *dev,
+			       struct device_attribute *attr,
+			       const char *buf, size_t len)
 {
 	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
 	struct iio_buffer *buffer = to_iio_dev_attr(attr)->buffer;
@@ -1369,9 +1362,8 @@ out:
 	return ret ? ret : len;
 }
 
-static ssize_t iio_dma_show_data_available(struct device *dev,
-						struct device_attribute *attr,
-						char *buf)
+static ssize_t data_available_show(struct device *dev,
+				   struct device_attribute *attr, char *buf)
 {
 	struct iio_buffer *buffer = to_iio_dev_attr(attr)->buffer;
 
@@ -1394,18 +1386,12 @@ static ssize_t direction_show(struct device *dev,
 	}
 }
 
-static DEVICE_ATTR(length, S_IRUGO | S_IWUSR, iio_buffer_read_length,
-		   iio_buffer_write_length);
-static struct device_attribute dev_attr_length_ro = __ATTR(length,
-	S_IRUGO, iio_buffer_read_length, NULL);
-static DEVICE_ATTR(enable, S_IRUGO | S_IWUSR,
-		   iio_buffer_show_enable, iio_buffer_store_enable);
-static DEVICE_ATTR(watermark, S_IRUGO | S_IWUSR,
-		   iio_buffer_show_watermark, iio_buffer_store_watermark);
-static struct device_attribute dev_attr_watermark_ro = __ATTR(watermark,
-	S_IRUGO, iio_buffer_show_watermark, NULL);
-static DEVICE_ATTR(data_available, S_IRUGO,
-		iio_dma_show_data_available, NULL);
+static DEVICE_ATTR_RW(length);
+static struct device_attribute dev_attr_length_ro = __ATTR_RO(length);
+static DEVICE_ATTR_RW(enable);
+static DEVICE_ATTR_RW(watermark);
+static struct device_attribute dev_attr_watermark_ro = __ATTR_RO(watermark);
+static DEVICE_ATTR_RO(data_available);
 static DEVICE_ATTR_RO(direction);
 
 /*