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tty: Use static attribute groups for sysfs entries 

Instead of manual calls of device_create_file() and
device_remove_file(), pass the static attribute groups using
device_create_with_groups().

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Takashi Iwai 2015-02-05 11:07:42 +01:00 committed by Greg Kroah-Hartman
parent 1569039db0
commit 1083a7be45
2 changed files with 41 additions and 43 deletions
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14
drivers/tty/tty_io.c
View File

@ -3593,6 +3593,13 @@ static ssize_t show_cons_active(struct device *dev,
}
static DEVICE_ATTR(active, S_IRUGO, show_cons_active, NULL);
static struct attribute *cons_dev_attrs[] = {
&dev_attr_active.attr,
NULL
};
ATTRIBUTE_GROUPS(cons_dev);
static struct device *consdev;
void console_sysfs_notify(void)
@ -3617,12 +3624,11 @@ int __init tty_init(void)
if (cdev_add(&console_cdev, MKDEV(TTYAUX_MAJOR, 1), 1) ||
register_chrdev_region(MKDEV(TTYAUX_MAJOR, 1), 1, "/dev/console") < 0)
panic("Couldn't register /dev/console driver\n");
consdev = device_create(tty_class, NULL, MKDEV(TTYAUX_MAJOR, 1), NULL,
"console");
consdev = device_create_with_groups(tty_class, NULL,
MKDEV(TTYAUX_MAJOR, 1), NULL,
cons_dev_groups, "console");
if (IS_ERR(consdev))
consdev = NULL;
else
WARN_ON(device_create_file(consdev, &dev_attr_active) < 0);
#ifdef CONFIG_VT
vty_init(&console_fops);

70
drivers/tty/vt/vt.c
View File

@ -3041,17 +3041,24 @@ static ssize_t show_tty_active(struct device *dev,
}
static DEVICE_ATTR(active, S_IRUGO, show_tty_active, NULL);
static struct attribute *vt_dev_attrs[] = {
&dev_attr_active.attr,
NULL
};
ATTRIBUTE_GROUPS(vt_dev);
int __init vty_init(const struct file_operations *console_fops)
{
cdev_init(&vc0_cdev, console_fops);
if (cdev_add(&vc0_cdev, MKDEV(TTY_MAJOR, 0), 1) ||
register_chrdev_region(MKDEV(TTY_MAJOR, 0), 1, "/dev/vc/0") < 0)
panic("Couldn't register /dev/tty0 driver\n");
tty0dev = device_create(tty_class, NULL, MKDEV(TTY_MAJOR, 0), NULL, "tty0");
tty0dev = device_create_with_groups(tty_class, NULL,
MKDEV(TTY_MAJOR, 0), NULL,
vt_dev_groups, "tty0");
if (IS_ERR(tty0dev))
tty0dev = NULL;
else
WARN_ON(device_create_file(tty0dev, &dev_attr_active) < 0);
vcs_init();
@ -3423,42 +3430,26 @@ static ssize_t show_name(struct device *dev, struct device_attribute *attr,
}
static struct device_attribute device_attrs[] = {
__ATTR(bind, S_IRUGO|S_IWUSR, show_bind, store_bind),
__ATTR(name, S_IRUGO, show_name, NULL),
static DEVICE_ATTR(bind, S_IRUGO|S_IWUSR, show_bind, store_bind);
static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
static struct attribute *con_dev_attrs[] = {
&dev_attr_bind.attr,
&dev_attr_name.attr,
NULL
};
ATTRIBUTE_GROUPS(con_dev);
static int vtconsole_init_device(struct con_driver *con)
{
int i;
int error = 0;
con->flag |= CON_DRIVER_FLAG_ATTR;
dev_set_drvdata(con->dev, con);
for (i = 0; i < ARRAY_SIZE(device_attrs); i++) {
error = device_create_file(con->dev, &device_attrs[i]);
if (error)
break;
}
if (error) {
while (--i >= 0)
device_remove_file(con->dev, &device_attrs[i]);
con->flag &= ~CON_DRIVER_FLAG_ATTR;
}
return error;
return 0;
}
static void vtconsole_deinit_device(struct con_driver *con)
{
int i;
if (con->flag & CON_DRIVER_FLAG_ATTR) {
for (i = 0; i < ARRAY_SIZE(device_attrs); i++)
device_remove_file(con->dev, &device_attrs[i]);
con->flag &= ~CON_DRIVER_FLAG_ATTR;
}
con->flag &= ~CON_DRIVER_FLAG_ATTR;
}
/**
@ -3621,11 +3612,11 @@ static int do_register_con_driver(const struct consw *csw, int first, int last)
if (retval)
goto err;
con_driver->dev = device_create(vtconsole_class, NULL,
MKDEV(0, con_driver->node),
NULL, "vtcon%i",
con_driver->node);
con_driver->dev =
device_create_with_groups(vtconsole_class, NULL,
MKDEV(0, con_driver->node),
con_driver, con_dev_groups,
"vtcon%i", con_driver->node);
if (IS_ERR(con_driver->dev)) {
printk(KERN_WARNING "Unable to create device for %s; "
"errno = %ld\n", con_driver->desc,
@ -3739,10 +3730,11 @@ static int __init vtconsole_class_init(void)
struct con_driver *con = &registered_con_driver[i];
if (con->con && !con->dev) {
con->dev = device_create(vtconsole_class, NULL,
MKDEV(0, con->node),
NULL, "vtcon%i",
con->node);
con->dev =
device_create_with_groups(vtconsole_class, NULL,
MKDEV(0, con->node),
con, con_dev_groups,
"vtcon%i", con->node);
if (IS_ERR(con->dev)) {
printk(KERN_WARNING "Unable to create "