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media: i2c: use DEVICE_ATTR_RO() helper macro

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Use DEVICE_ATTR_RO() helper macro instead of DEVICE_ATTR(), which is
simpler and more readable.

Due to the name of the read function of the sysfs attribute is normalized,
there is a natural association.

Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
This commit is contained in:
Zhen Lei 2021-06-03 09:17:50 +02:00 committed by Mauro Carvalho Chehab
parent 5fca4169f5
commit 9256de0694
1 changed files with 4 additions and 7 deletions
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11
drivers/media/i2c/ccs/ccs-core.c
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@ -2673,8 +2673,7 @@ static int ccs_get_skip_top_lines(struct v4l2_subdev *subdev, u32 *lines)
*/
static ssize_t
ccs_sysfs_nvm_read(struct device *dev, struct device_attribute *attr,
char *buf)
nvm_show(struct device *dev, struct device_attribute *attr, char *buf)
{
struct v4l2_subdev *subdev = i2c_get_clientdata(to_i2c_client(dev));
struct i2c_client *client = v4l2_get_subdevdata(subdev);
@ -2704,11 +2703,10 @@ ccs_sysfs_nvm_read(struct device *dev, struct device_attribute *attr,
*/
return rval;
}
static DEVICE_ATTR(nvm, S_IRUGO, ccs_sysfs_nvm_read, NULL);
static DEVICE_ATTR_RO(nvm);
static ssize_t
ccs_sysfs_ident_read(struct device *dev, struct device_attribute *attr,
char *buf)
ident_show(struct device *dev, struct device_attribute *attr, char *buf)
{
struct v4l2_subdev *subdev = i2c_get_clientdata(to_i2c_client(dev));
struct ccs_sensor *sensor = to_ccs_sensor(subdev);
@ -2723,8 +2721,7 @@ ccs_sysfs_ident_read(struct device *dev, struct device_attribute *attr,
minfo->smia_manufacturer_id, minfo->model_id,
minfo->revision_number) + 1;
}
static DEVICE_ATTR(ident, S_IRUGO, ccs_sysfs_ident_read, NULL);
static DEVICE_ATTR_RO(ident);
/* -----------------------------------------------------------------------------
* V4L2 subdev core operations