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w1: slaves: w1_ds2423: convert to use w1_family_ops.groups

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This moves the sysfs file creation/removal to the w1 core by using the
.groups field, saving code in the slave driver.

Acked-by: Evgeniy Polyakov <zbr@ioremap.net>
Cc: Alexander Stein <alexander.stein@informatik.tu-chemnitz.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Greg Kroah-Hartman 2013-08-21 15:44:59 -07:00
parent 729fb9d33f
commit 94c9e6d665
1 changed files with 9 additions and 18 deletions
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27
drivers/w1/slaves/w1_ds2423.c
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@ -40,14 +40,8 @@
#define COUNTER_COUNT 4
#define READ_BYTE_COUNT 42
static ssize_t w1_counter_read(struct device *device,
struct device_attribute *attr, char *buf);
static struct device_attribute w1_counter_attr =
__ATTR(w1_slave, S_IRUGO, w1_counter_read, NULL);
static ssize_t w1_counter_read(struct device *device,
struct device_attribute *attr, char *out_buf)
static ssize_t w1_slave_show(struct device *device,
struct device_attribute *attr, char *out_buf)
{
struct w1_slave *sl = dev_to_w1_slave(device);
struct w1_master *dev = sl->master;
@ -128,19 +122,16 @@ static ssize_t w1_counter_read(struct device *device,
return PAGE_SIZE - c;
}
static int w1_f1d_add_slave(struct w1_slave *sl)
{
return device_create_file(&sl->dev, &w1_counter_attr);
}
static DEVICE_ATTR_RO(w1_slave);
static void w1_f1d_remove_slave(struct w1_slave *sl)
{
device_remove_file(&sl->dev, &w1_counter_attr);
}
static struct attribute *w1_f1d_attrs[] = {
&dev_attr_w1_slave.attr,
NULL,
};
ATTRIBUTE_GROUPS(w1_f1d);
static struct w1_family_ops w1_f1d_fops = {
.add_slave = w1_f1d_add_slave,
.remove_slave = w1_f1d_remove_slave,
.groups = w1_f1d_groups,
};
static struct w1_family w1_family_1d = {