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Subject[PATCH] 2.6.24: make /proc/acpi/ac_adapter dependent on ACPI_PROCFS
Date
Let's make it consistent with battery code; also it fixes HAL case of 
duplicated adapters. Somebody will have to sort out HAL with ACPI_PROCFS
case ...

-andrey
Subject: [PATCH] 2.6.24: make /proc/acpi/ac_adapter dependent on ACPI_PROCFS
From: Andrey Borzenkov <arvidjaar@mail.ru>

Do not provide /proc/acpi/ac_adapter if ACPI_PROCFS is not defined.
This eliminates duplicated power adapters in HAL and makes it consistent
with battery module

Signed-off-by: Andrey Borzenkov <arvidjaar@mail.ru>

---

drivers/acpi/ac.c | 23 ++++++++++++++++++++++-
1 files changed, 22 insertions(+), 1 deletions(-)

diff --git a/drivers/acpi/ac.c b/drivers/acpi/ac.c
index e03de37..1461dc9 100644
--- a/drivers/acpi/ac.c
+++ b/drivers/acpi/ac.c
@@ -27,8 +27,10 @@
#include <linux/module.h>
#include <linux/init.h>
#include <linux/types.h>
+#ifdef CONFIG_ACPI_PROCFS
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
+#endif
#include <linux/power_supply.h>
#include <acpi/acpi_bus.h>
#include <acpi/acpi_drivers.h>
@@ -49,12 +51,14 @@ MODULE_AUTHOR("Paul Diefenbaugh");
MODULE_DESCRIPTION("ACPI AC Adapter Driver");
MODULE_LICENSE("GPL");

+#ifdef CONFIG_ACPI_PROCFS
extern struct proc_dir_entry *acpi_lock_ac_dir(void);
extern void *acpi_unlock_ac_dir(struct proc_dir_entry *acpi_ac_dir);
+static int acpi_ac_open_fs(struct inode *inode, struct file *file);
+#endif

static int acpi_ac_add(struct acpi_device *device);
static int acpi_ac_remove(struct acpi_device *device, int type);
-static int acpi_ac_open_fs(struct inode *inode, struct file *file);

const static struct acpi_device_id ac_device_ids[] = {
{"ACPI0003", 0},
@@ -80,12 +84,15 @@ struct acpi_ac {

#define to_acpi_ac(x) container_of(x, struct acpi_ac, charger);

+#ifdef CONFIG_ACPI_PROCFS
static const struct file_operations acpi_ac_fops = {
.open = acpi_ac_open_fs,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
+#endif
+
static int get_ac_property(struct power_supply *psy,
enum power_supply_property psp,
union power_supply_propval *val)
@@ -127,6 +134,7 @@ static int acpi_ac_get_state(struct acpi_ac *ac)
return 0;
}

+#ifdef CONFIG_ACPI_PROCFS
/* --------------------------------------------------------------------------
FS Interface (/proc)
-------------------------------------------------------------------------- */
@@ -206,6 +214,7 @@ static int acpi_ac_remove_fs(struct acpi_device *device)

return 0;
}
+#endif

/* --------------------------------------------------------------------------
Driver Model
@@ -264,7 +273,9 @@ static int acpi_ac_add(struct acpi_device *device)
if (result)
goto end;

+#ifdef CONFIG_ACPI_PROCFS
result = acpi_ac_add_fs(device);
+#endif
if (result)
goto end;
ac->charger.name = acpi_device_bid(device);
@@ -287,7 +298,9 @@ static int acpi_ac_add(struct acpi_device *device)

end:
if (result) {
+#ifdef CONFIG_ACPI_PROCFS
acpi_ac_remove_fs(device);
+#endif
kfree(ac);
}

@@ -309,7 +322,9 @@ static int acpi_ac_remove(struct acpi_device *device, int type)
ACPI_ALL_NOTIFY, acpi_ac_notify);
if (ac->charger.dev)
power_supply_unregister(&ac->charger);
+#ifdef CONFIG_ACPI_PROCFS
acpi_ac_remove_fs(device);
+#endif

kfree(ac);

@@ -323,13 +338,17 @@ static int __init acpi_ac_init(void)
if (acpi_disabled)
return -ENODEV;

+#ifdef CONFIG_ACPI_PROCFS
acpi_ac_dir = acpi_lock_ac_dir();
if (!acpi_ac_dir)
return -ENODEV;
+#endif

result = acpi_bus_register_driver(&acpi_ac_driver);
if (result < 0) {
+#ifdef CONFIG_ACPI_PROCFS
acpi_unlock_ac_dir(acpi_ac_dir);
+#endif
return -ENODEV;
}

@@ -341,7 +360,9 @@ static void __exit acpi_ac_exit(void)

acpi_bus_unregister_driver(&acpi_ac_driver);

+#ifdef CONFIG_ACPI_PROCFS
acpi_unlock_ac_dir(acpi_ac_dir);
+#endif

return;
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