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yaml
---
r: 217657
b: refs/heads/master
c: b2a4498
h: refs/heads/master
i:
  217655: c2b41d8
v: v3
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Zhang Rui authored and Len Brown committed Oct 16, 2010
1 parent 62ee666 commit e4e8cb4
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Showing 2 changed files with 2 additions and 139 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: 1b3d4c3b9a597e216c08bff2c59a8de872ef2d09
refs/heads/master: b2a44989c1dbfae409035eaffad4292c27fc7cb8
139 changes: 1 addition & 138 deletions trunk/drivers/acpi/fan.c
Original file line number Diff line number Diff line change
Expand Up @@ -27,8 +27,6 @@
#include <linux/module.h>
#include <linux/init.h>
#include <linux/types.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <asm/uaccess.h>
#include <linux/thermal.h>
#include <acpi/acpi_bus.h>
Expand Down Expand Up @@ -118,122 +116,6 @@ static struct thermal_cooling_device_ops fan_cooling_ops = {
.set_cur_state = fan_set_cur_state,
};

/* --------------------------------------------------------------------------
FS Interface (/proc)
-------------------------------------------------------------------------- */
#ifdef CONFIG_ACPI_PROCFS

static struct proc_dir_entry *acpi_fan_dir;

static int acpi_fan_read_state(struct seq_file *seq, void *offset)
{
struct acpi_device *device = seq->private;
int state = 0;


if (device) {
if (acpi_bus_get_power(device->handle, &state))
seq_printf(seq, "status: ERROR\n");
else
seq_printf(seq, "status: %s\n",
!state ? "on" : "off");
}
return 0;
}

static int acpi_fan_state_open_fs(struct inode *inode, struct file *file)
{
return single_open(file, acpi_fan_read_state, PDE(inode)->data);
}

static ssize_t
acpi_fan_write_state(struct file *file, const char __user * buffer,
size_t count, loff_t * ppos)
{
int result = 0;
struct seq_file *m = file->private_data;
struct acpi_device *device = m->private;
char state_string[3] = { '\0' };

if (count > sizeof(state_string) - 1)
return -EINVAL;

if (copy_from_user(state_string, buffer, count))
return -EFAULT;

state_string[count] = '\0';
if ((state_string[0] < '0') || (state_string[0] > '3'))
return -EINVAL;
if (state_string[1] == '\n')
state_string[1] = '\0';
if (state_string[1] != '\0')
return -EINVAL;

result = acpi_bus_set_power(device->handle,
simple_strtoul(state_string, NULL, 0));
if (result)
return result;

return count;
}

static const struct file_operations acpi_fan_state_ops = {
.open = acpi_fan_state_open_fs,
.read = seq_read,
.write = acpi_fan_write_state,
.llseek = seq_lseek,
.release = single_release,
.owner = THIS_MODULE,
};

static int acpi_fan_add_fs(struct acpi_device *device)
{
struct proc_dir_entry *entry = NULL;


if (!device)
return -EINVAL;

if (!acpi_device_dir(device)) {
acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device),
acpi_fan_dir);
if (!acpi_device_dir(device))
return -ENODEV;
}

/* 'status' [R/W] */
entry = proc_create_data(ACPI_FAN_FILE_STATE,
S_IFREG | S_IRUGO | S_IWUSR,
acpi_device_dir(device),
&acpi_fan_state_ops,
device);
if (!entry)
return -ENODEV;
return 0;
}

static int acpi_fan_remove_fs(struct acpi_device *device)
{

if (acpi_device_dir(device)) {
remove_proc_entry(ACPI_FAN_FILE_STATE, acpi_device_dir(device));
remove_proc_entry(acpi_device_bid(device), acpi_fan_dir);
acpi_device_dir(device) = NULL;
}

return 0;
}
#else
static int acpi_fan_add_fs(struct acpi_device *device)
{
return 0;
}

static int acpi_fan_remove_fs(struct acpi_device *device)
{
return 0;
}
#endif
/* --------------------------------------------------------------------------
Driver Interface
-------------------------------------------------------------------------- */
Expand Down Expand Up @@ -284,10 +166,6 @@ static int acpi_fan_add(struct acpi_device *device)
dev_err(&device->dev, "Failed to create sysfs link "
"'device'\n");

result = acpi_fan_add_fs(device);
if (result)
goto end;

printk(KERN_INFO PREFIX "%s [%s] (%s)\n",
acpi_device_name(device), acpi_device_bid(device),
!device->power.state ? "on" : "off");
Expand All @@ -303,7 +181,6 @@ static int acpi_fan_remove(struct acpi_device *device, int type)
if (!device || !cdev)
return -EINVAL;

acpi_fan_remove_fs(device);
sysfs_remove_link(&device->dev.kobj, "thermal_cooling");
sysfs_remove_link(&cdev->device.kobj, "device");
thermal_cooling_device_unregister(cdev);
Expand Down Expand Up @@ -347,19 +224,9 @@ static int __init acpi_fan_init(void)
{
int result = 0;

#ifdef CONFIG_ACPI_PROCFS
acpi_fan_dir = proc_mkdir(ACPI_FAN_CLASS, acpi_root_dir);
if (!acpi_fan_dir)
return -ENODEV;
#endif

result = acpi_bus_register_driver(&acpi_fan_driver);
if (result < 0) {
#ifdef CONFIG_ACPI_PROCFS
remove_proc_entry(ACPI_FAN_CLASS, acpi_root_dir);
#endif
if (result < 0)
return -ENODEV;
}

return 0;
}
Expand All @@ -369,10 +236,6 @@ static void __exit acpi_fan_exit(void)

acpi_bus_unregister_driver(&acpi_fan_driver);

#ifdef CONFIG_ACPI_PROCFS
remove_proc_entry(ACPI_FAN_CLASS, acpi_root_dir);
#endif

return;
}

Expand Down

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