From: Zhang Rui <rui.zhang@xxxxxxxxx>
Mark the ACPI thermal procfs I/F deprecated, because /sys/class/thermal/
is already available and has been working for years w/o any problem.
The ACPI thermal procfs I/F will be removed in 2.6.37.
Signed-off-by: Zhang Rui <rui.zhang@xxxxxxxxx>
Signed-off-by: Len Brown <len.brown@xxxxxxxxx>
---
drivers/acpi/Kconfig | 1 +
drivers/acpi/thermal.c | 86 +++++++++++++++++++++++++++++------------------
2 files changed, 54 insertions(+), 33 deletions(-)
diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
index 354e613..5ed51b3 100644
--- a/drivers/acpi/Kconfig
+++ b/drivers/acpi/Kconfig
@@ -57,6 +57,7 @@ config ACPI_PROCFS
/proc/acpi/processor/*/throttling (/sys/class/thermal/
cooling_device*/*)
/proc/acpi/video/*/brightness (/sys/class/backlight/)
+ /proc/acpi/thermal_zone/*/* (/sys/class/thermal/)
This option has no effect on /proc/acpi/ files
and functions which do not yet exist in /sys.
diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c
index efad1f3..2f8f171 100644
--- a/drivers/acpi/thermal.c
+++ b/drivers/acpi/thermal.c
@@ -37,10 +37,14 @@
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/types.h>
+
+#ifdef CONFIG_ACPI_PROCFS
#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#endif
+
#include <linux/jiffies.h>
#include <linux/kmod.h>
-#include <linux/seq_file.h>
#include <linux/reboot.h>
#include <linux/device.h>
#include <asm/uaccess.h>
@@ -102,16 +106,6 @@ static int acpi_thermal_add(struct acpi_device *device);
static int acpi_thermal_remove(struct acpi_device *device, int type);
static int acpi_thermal_resume(struct acpi_device *device);
static void acpi_thermal_notify(struct acpi_device *device, u32 event);
-static int acpi_thermal_state_open_fs(struct inode *inode, struct file *file);
-static int acpi_thermal_temp_open_fs(struct inode *inode, struct file *file);
-static int acpi_thermal_trip_open_fs(struct inode *inode, struct file *file);
-static int acpi_thermal_cooling_open_fs(struct inode *inode, struct file *file);
-static ssize_t acpi_thermal_write_cooling_mode(struct file *,
- const char __user *, size_t,
- loff_t *);
-static int acpi_thermal_polling_open_fs(struct inode *inode, struct file *file);
-static ssize_t acpi_thermal_write_polling(struct file *, const char __user *,
- size_t, loff_t *);
static const struct acpi_device_id thermal_device_ids[] = {
{ACPI_THERMAL_HID, 0},
@@ -201,6 +195,18 @@ struct acpi_thermal {
struct mutex lock;
};
+#ifdef CONFIG_ACPI_PROCFS
+static int acpi_thermal_state_open_fs(struct inode *inode, struct file *file);
+static int acpi_thermal_temp_open_fs(struct inode *inode, struct file *file);
+static int acpi_thermal_trip_open_fs(struct inode *inode, struct file *file);
+static int acpi_thermal_cooling_open_fs(struct inode *inode, struct file *file);
+static ssize_t acpi_thermal_write_cooling_mode(struct file *,
+ const char __user *, size_t,
+ loff_t *);
+static int acpi_thermal_polling_open_fs(struct inode *inode, struct file *file);
+static ssize_t acpi_thermal_write_polling(struct file *, const char __user *,
+ size_t, loff_t *);
+
static const struct file_operations acpi_thermal_state_fops = {
.owner = THIS_MODULE,
.open = acpi_thermal_state_open_fs,
@@ -242,6 +248,7 @@ static const struct file_operations acpi_thermal_polling_fops = {
.llseek = seq_lseek,
.release = single_release,
};
+#endif /* CONFIG_ACPI_PROCFS*/
/* --------------------------------------------------------------------------
Thermal Zone Management
@@ -287,26 +294,6 @@ static int acpi_thermal_get_polling_frequency(struct acpi_thermal *tz)
return 0;
}
-static int acpi_thermal_set_polling(struct acpi_thermal *tz, int seconds)
-{
-
- if (!tz)
- return -EINVAL;
-
- tz->polling_frequency = seconds * 10; /* Convert value to deci-seconds */
-
- tz->thermal_zone->polling_delay = seconds * 1000;
-
- if (tz->tz_enabled)
- thermal_zone_device_update(tz->thermal_zone);
-
- ACPI_DEBUG_PRINT((ACPI_DB_INFO,
- "Polling frequency set to %lu seconds\n",
- tz->polling_frequency/10));
-
- return 0;
-}
-
static int acpi_thermal_set_cooling_mode(struct acpi_thermal *tz, int mode)
{
acpi_status status = AE_OK;
@@ -973,7 +960,7 @@ static void acpi_thermal_unregister_thermal_zone(struct acpi_thermal *tz)
/* --------------------------------------------------------------------------
FS Interface (/proc)
-------------------------------------------------------------------------- */
-
+#ifdef CONFIG_ACPI_PROCFS
static struct proc_dir_entry *acpi_thermal_dir;
static int acpi_thermal_state_seq_show(struct seq_file *seq, void *offset)
@@ -1187,6 +1174,26 @@ static int acpi_thermal_polling_open_fs(struct inode *inode, struct file *file)
PDE(inode)->data);
}
+static int acpi_thermal_set_polling(struct acpi_thermal *tz, int seconds)
+{
+ if (!tz)
+ return -EINVAL;
+
+ /* Convert value to deci-seconds */
+ tz->polling_frequency = seconds * 10;
+
+ tz->thermal_zone->polling_delay = seconds * 1000;
+
+ if (tz->tz_enabled)
+ thermal_zone_device_update(tz->thermal_zone);
+
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+ "Polling frequency set to %lu seconds\n",
+ tz->polling_frequency/10));
+
+ return 0;
+}
+
static ssize_t
acpi_thermal_write_polling(struct file *file,
const char __user * buffer,
@@ -1295,7 +1302,13 @@ static int acpi_thermal_remove_fs(struct acpi_device *device)
return 0;
}
-
+#else
+static inline int acpi_thermal_add_fs(struct acpi_device *device) { return 0; }
+static inline int acpi_thermal_remove_fs(struct acpi_device *device)
+{
+ return 0;
+}
+#endif /* CONFIG_ACPI_PROCFS */
/* --------------------------------------------------------------------------
Driver Interface
-------------------------------------------------------------------------- */
@@ -1566,13 +1579,18 @@ static int __init acpi_thermal_init(void)
printk(KERN_NOTICE "ACPI: thermal control disabled\n");
return -ENODEV;
}
+
+#ifdef CONFIG_ACPI_PROCFS
acpi_thermal_dir = proc_mkdir(ACPI_THERMAL_CLASS, acpi_root_dir);
if (!acpi_thermal_dir)
return -ENODEV;
+#endif
result = acpi_bus_register_driver(&acpi_thermal_driver);
if (result < 0) {
+#ifdef CONFIG_ACPI_PROCFS
remove_proc_entry(ACPI_THERMAL_CLASS, acpi_root_dir);
+#endif
return -ENODEV;
}
@@ -1584,7 +1602,9 @@ static void __exit acpi_thermal_exit(void)
acpi_bus_unregister_driver(&acpi_thermal_driver);
+#ifdef CONFIG_ACPI_PROCFS
remove_proc_entry(ACPI_THERMAL_CLASS, acpi_root_dir);
+#endif
return;
}
--
1.7.2.1.95.g3d045
--
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