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zorro: stop creating attributes by hand

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Instead of creating attributes one by one, define attribute_group array
and attach it to bus->dev_groups, so that all needed attributes are created
automatically when a new device is registered on the bus.

Also switch to using standard DEVICE_ATTR_RO() macros.

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Dmitry Torokhov 2017-02-14 12:24:09 -08:00 committed by Greg Kroah-Hartman
parent a553910fba
commit 87e715deb8
4 changed files with 50 additions and 47 deletions
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3
drivers/zorro/zorro-driver.c
View File

@ -14,6 +14,8 @@
#include <linux/module.h>
#include <linux/zorro.h>
#include "zorro.h"
/**
* zorro_match_device - Tell if a Zorro device structure has a matching
@ -163,6 +165,7 @@ static int zorro_uevent(struct device *dev, struct kobj_uevent_env *env)
struct bus_type zorro_bus_type = {
.name = "zorro",
.dev_name = "zorro",
.dev_groups = zorro_device_attribute_groups,
.match = zorro_bus_match,
.uevent = zorro_uevent,
.probe = zorro_device_probe,

76
drivers/zorro/zorro-sysfs.c
View File

@ -23,33 +23,33 @@
/* show configuration fields */
#define zorro_config_attr(name, field, format_string) \
static ssize_t \
show_##name(struct device *dev, struct device_attribute *attr, char *buf) \
static ssize_t name##_show(struct device *dev, \
struct device_attribute *attr, char *buf) \
{ \
struct zorro_dev *z; \
\
z = to_zorro_dev(dev); \
return sprintf(buf, format_string, z->field); \
} \
static DEVICE_ATTR(name, S_IRUGO, show_##name, NULL);
static DEVICE_ATTR_RO(name);
zorro_config_attr(id, id, "0x%08x\n");
zorro_config_attr(type, rom.er_Type, "0x%02x\n");
zorro_config_attr(slotaddr, slotaddr, "0x%04x\n");
zorro_config_attr(slotsize, slotsize, "0x%04x\n");
static ssize_t
show_serial(struct device *dev, struct device_attribute *attr, char *buf)
static ssize_t serial_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct zorro_dev *z;
z = to_zorro_dev(dev);
return sprintf(buf, "0x%08x\n", be32_to_cpu(z->rom.er_SerialNumber));
}
static DEVICE_ATTR_RO(serial);
static DEVICE_ATTR(serial, S_IRUGO, show_serial, NULL);
static ssize_t zorro_show_resource(struct device *dev, struct device_attribute *attr, char *buf)
static ssize_t resource_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct zorro_dev *z = to_zorro_dev(dev);
@ -58,8 +58,27 @@ static ssize_t zorro_show_resource(struct device *dev, struct device_attribute *
(unsigned long)zorro_resource_end(z),
zorro_resource_flags(z));
}
static DEVICE_ATTR_RO(resource);
static DEVICE_ATTR(resource, S_IRUGO, zorro_show_resource, NULL);
static ssize_t modalias_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct zorro_dev *z = to_zorro_dev(dev);
return sprintf(buf, ZORRO_DEVICE_MODALIAS_FMT "\n", z->id);
}
static DEVICE_ATTR_RO(modalias);
static struct attribute *zorro_device_attrs[] = {
&dev_attr_id.attr,
&dev_attr_type.attr,
&dev_attr_serial.attr,
&dev_attr_slotaddr.attr,
&dev_attr_slotsize.attr,
&dev_attr_resource.attr,
&dev_attr_modalias.attr,
NULL
};
static ssize_t zorro_read_config(struct file *filp, struct kobject *kobj,
struct bin_attribute *bin_attr,
@ -88,32 +107,17 @@ static struct bin_attribute zorro_config_attr = {
.read = zorro_read_config,
};
static ssize_t modalias_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct zorro_dev *z = to_zorro_dev(dev);
static struct bin_attribute *zorro_device_bin_attrs[] = {
&zorro_config_attr,
NULL
};
return sprintf(buf, ZORRO_DEVICE_MODALIAS_FMT "\n", z->id);
}
static DEVICE_ATTR(modalias, S_IRUGO, modalias_show, NULL);
int zorro_create_sysfs_dev_files(struct zorro_dev *z)
{
struct device *dev = &z->dev;
int error;
/* current configuration's attributes */
if ((error = device_create_file(dev, &dev_attr_id)) ||
(error = device_create_file(dev, &dev_attr_type)) ||
(error = device_create_file(dev, &dev_attr_serial)) ||
(error = device_create_file(dev, &dev_attr_slotaddr)) ||
(error = device_create_file(dev, &dev_attr_slotsize)) ||
(error = device_create_file(dev, &dev_attr_resource)) ||
(error = device_create_file(dev, &dev_attr_modalias)) ||
(error = sysfs_create_bin_file(&dev->kobj, &zorro_config_attr)))
return error;
return 0;
}
static const struct attribute_group zorro_device_attr_group = {
.attrs = zorro_device_attrs,
.bin_attrs = zorro_device_bin_attrs,
};
const struct attribute_group *zorro_device_attribute_groups[] = {
&zorro_device_attr_group,
NULL
};

3
drivers/zorro/zorro.c
View File

@ -197,9 +197,6 @@ static int __init amiga_zorro_probe(struct platform_device *pdev)
put_device(&z->dev);
continue;
}
error = zorro_create_sysfs_dev_files(z);
if (error)
dev_err(&z->dev, "Error creating sysfs files\n");
}
/* Mark all available Zorro II memory */

3
drivers/zorro/zorro.h
View File

@ -5,5 +5,4 @@ extern void zorro_name_device(struct zorro_dev *z);
static inline void zorro_name_device(struct zorro_dev *dev) { }
#endif
extern int zorro_create_sysfs_dev_files(struct zorro_dev *z);
extern const struct attribute_group *zorro_device_attribute_groups[];