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Driver core: change misc class_devices to be real devices 

This also ment that some of the misc drivers had to also be fixed
up as they were assuming the device was a class_device.

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
hifive-unleashed-5.1
Greg Kroah-Hartman 2006-07-27 16:16:04 -07:00
parent cd15422b9f
commit 94fbcded4e
5 changed files with 27 additions and 33 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

38
drivers/char/hw_random/core.c
View File

@ -162,7 +162,8 @@ static struct miscdevice rng_miscdev = {
};
static ssize_t hwrng_attr_current_store(struct class_device *class,
static ssize_t hwrng_attr_current_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t len)
{
int err;
@ -192,7 +193,8 @@ static ssize_t hwrng_attr_current_store(struct class_device *class,
return err ? : len;
}
static ssize_t hwrng_attr_current_show(struct class_device *class,
static ssize_t hwrng_attr_current_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
int err;
@ -210,7 +212,8 @@ static ssize_t hwrng_attr_current_show(struct class_device *class,
return ret;
}
static ssize_t hwrng_attr_available_show(struct class_device *class,
static ssize_t hwrng_attr_available_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
int err;
@ -234,20 +237,18 @@ static ssize_t hwrng_attr_available_show(struct class_device *class,
return ret;
}
static CLASS_DEVICE_ATTR(rng_current, S_IRUGO | S_IWUSR,
hwrng_attr_current_show,
hwrng_attr_current_store);
static CLASS_DEVICE_ATTR(rng_available, S_IRUGO,
hwrng_attr_available_show,
NULL);
static DEVICE_ATTR(rng_current, S_IRUGO | S_IWUSR,
hwrng_attr_current_show,
hwrng_attr_current_store);
static DEVICE_ATTR(rng_available, S_IRUGO,
hwrng_attr_available_show,
NULL);
static void unregister_miscdev(void)
{
class_device_remove_file(rng_miscdev.class,
&class_device_attr_rng_available);
class_device_remove_file(rng_miscdev.class,
&class_device_attr_rng_current);
device_remove_file(rng_miscdev.this_device, &dev_attr_rng_available);
device_remove_file(rng_miscdev.this_device, &dev_attr_rng_current);
misc_deregister(&rng_miscdev);
}
@ -258,20 +259,19 @@ static int register_miscdev(void)
err = misc_register(&rng_miscdev);
if (err)
goto out;
err = class_device_create_file(rng_miscdev.class,
&class_device_attr_rng_current);
err = device_create_file(rng_miscdev.this_device,
&dev_attr_rng_current);
if (err)
goto err_misc_dereg;
err = class_device_create_file(rng_miscdev.class,
&class_device_attr_rng_available);
err = device_create_file(rng_miscdev.this_device,
&dev_attr_rng_available);
if (err)
goto err_remove_current;
out:
return err;
err_remove_current:
class_device_remove_file(rng_miscdev.class,
&class_device_attr_rng_current);
device_remove_file(rng_miscdev.this_device, &dev_attr_rng_current);
err_misc_dereg:
misc_deregister(&rng_miscdev);
goto out;

13
drivers/char/misc.c
View File

@ -169,11 +169,6 @@ fail:
return err;
}
/*
* TODO for 2.7:
* - add a struct kref to struct miscdevice and make all usages of
* them dynamic.
*/
static struct class *misc_class;
static const struct file_operations misc_fops = {
@ -228,10 +223,10 @@ int misc_register(struct miscdevice * misc)
misc_minors[misc->minor >> 3] |= 1 << (misc->minor & 7);
dev = MKDEV(MISC_MAJOR, misc->minor);
misc->class = class_device_create(misc_class, NULL, dev, misc->dev,
misc->this_device = device_create(misc_class, misc->parent, dev,
"%s", misc->name);
if (IS_ERR(misc->class)) {
err = PTR_ERR(misc->class);
if (IS_ERR(misc->this_device)) {
err = PTR_ERR(misc->this_device);
goto out;
}
@ -264,7 +259,7 @@ int misc_deregister(struct miscdevice * misc)
down(&misc_sem);
list_del(&misc->list);
class_device_destroy(misc_class, MKDEV(MISC_MAJOR, misc->minor));
device_destroy(misc_class, MKDEV(MISC_MAJOR, misc->minor));
if (i < DYNAMIC_MINORS && i>0) {
misc_minors[i>>3] &= ~(1 << (misc->minor & 7));
}

2
drivers/char/tpm/tpm.c
View File

@ -1130,7 +1130,7 @@ struct tpm_chip *tpm_register_hardware(struct device *dev, const struct tpm_vend
scnprintf(devname, DEVNAME_SIZE, "%s%d", "tpm", chip->dev_num);
chip->vendor.miscdev.name = devname;
chip->vendor.miscdev.dev = dev;
chip->vendor.miscdev.parent = dev;
chip->dev = get_device(dev);
if (misc_register(&chip->vendor.miscdev)) {

2
drivers/input/serio/serio_raw.c
View File

@ -297,7 +297,7 @@ static int serio_raw_connect(struct serio *serio, struct serio_driver *drv)
serio_raw->dev.minor = PSMOUSE_MINOR;
serio_raw->dev.name = serio_raw->name;
serio_raw->dev.dev = &serio->dev;
serio_raw->dev.parent = &serio->dev;
serio_raw->dev.fops = &serio_raw_fops;
err = misc_register(&serio_raw->dev);

5
include/linux/miscdevice.h
View File

@ -31,15 +31,14 @@
#define HPET_MINOR 228
struct device;
struct class_device;
struct miscdevice {
int minor;
const char *name;
const struct file_operations *fops;
struct list_head list;
struct device *dev;
struct class_device *class;
struct device *parent;
struct device *this_device;
};
extern int misc_register(struct miscdevice * misc);