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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-08-21 15:45:03 -0700
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-08-22 11:05:43 -0700
commit9365261db45ddf1dc0800ce70830928beb0efd78 (patch)
tree96a7eeb770f739949f2610c2686b9190696f6c2e /drivers/w1/slaves
parentfa33a65a9cf7e2069cc1f26b057867e865daadba (diff)
downloadlinux-9365261db45ddf1dc0800ce70830928beb0efd78.tar.bz2
w1: slaves: w1_ds2780: convert to use w1_family_ops.groups
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> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/w1/slaves')
-rw-r--r--drivers/w1/slaves/w1_ds2780.c36
1 files changed, 18 insertions, 18 deletions
diff --git a/drivers/w1/slaves/w1_ds2780.c b/drivers/w1/slaves/w1_ds2780.c
index 0cd7a27b5d6b..50e85f7929d4 100644
--- a/drivers/w1/slaves/w1_ds2780.c
+++ b/drivers/w1/slaves/w1_ds2780.c
@@ -89,22 +89,28 @@ int w1_ds2780_eeprom_cmd(struct device *dev, int addr, int cmd)
}
EXPORT_SYMBOL(w1_ds2780_eeprom_cmd);
-static ssize_t w1_ds2780_read_bin(struct file *filp,
- struct kobject *kobj,
- struct bin_attribute *bin_attr,
- char *buf, loff_t off, size_t count)
+static ssize_t w1_slave_read(struct file *filp, struct kobject *kobj,
+ struct bin_attribute *bin_attr, char *buf,
+ loff_t off, size_t count)
{
struct device *dev = container_of(kobj, struct device, kobj);
return w1_ds2780_io(dev, buf, off, count, 0);
}
-static struct bin_attribute w1_ds2780_bin_attr = {
- .attr = {
- .name = "w1_slave",
- .mode = S_IRUGO,
- },
- .size = DS2780_DATA_SIZE,
- .read = w1_ds2780_read_bin,
+static BIN_ATTR_RO(w1_slave, DS2780_DATA_SIZE);
+
+static struct bin_attribute *w1_ds2780_bin_attrs[] = {
+ &bin_attr_w1_slave,
+ NULL,
+};
+
+static const struct attribute_group w1_ds2780_group = {
+ .bin_attrs = w1_ds2780_bin_attrs,
+};
+
+static const struct attribute_group *w1_ds2780_groups[] = {
+ &w1_ds2780_group,
+ NULL,
};
static DEFINE_IDA(bat_ida);
@@ -132,16 +138,10 @@ static int w1_ds2780_add_slave(struct w1_slave *sl)
if (ret)
goto pdev_add_failed;
- ret = sysfs_create_bin_file(&sl->dev.kobj, &w1_ds2780_bin_attr);
- if (ret)
- goto bin_attr_failed;
-
dev_set_drvdata(&sl->dev, pdev);
return 0;
-bin_attr_failed:
- platform_device_del(pdev);
pdev_add_failed:
platform_device_put(pdev);
pdev_alloc_failed:
@@ -157,12 +157,12 @@ static void w1_ds2780_remove_slave(struct w1_slave *sl)
platform_device_unregister(pdev);
ida_simple_remove(&bat_ida, id);
- sysfs_remove_bin_file(&sl->dev.kobj, &w1_ds2780_bin_attr);
}
static struct w1_family_ops w1_ds2780_fops = {
.add_slave = w1_ds2780_add_slave,
.remove_slave = w1_ds2780_remove_slave,
+ .groups = w1_ds2780_groups,
};
static struct w1_family w1_ds2780_family = {