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ACPI: Battery: don't use acpi_extract_package()

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acpi_extract_package() creates more problems with memory management than
it solves as helper for package handling.

Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Alexey Starikovskiy 2007-09-26 19:42:46 +04:00 committed by Len Brown
parent ff0ce6845b
commit 038fdea296
1 changed files with 141 additions and 222 deletions
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357
drivers/acpi/battery.c
View File

@ -36,9 +36,6 @@
#define ACPI_BATTERY_VALUE_UNKNOWN 0xFFFFFFFF #define ACPI_BATTERY_VALUE_UNKNOWN 0xFFFFFFFF
#define ACPI_BATTERY_FORMAT_BIF "NNNNNNNNNSSSS"
#define ACPI_BATTERY_FORMAT_BST "NNNN"
#define ACPI_BATTERY_COMPONENT 0x00040000 #define ACPI_BATTERY_COMPONENT 0x00040000
#define ACPI_BATTERY_CLASS "battery" #define ACPI_BATTERY_CLASS "battery"
#define ACPI_BATTERY_DEVICE_NAME "Battery" #define ACPI_BATTERY_DEVICE_NAME "Battery"
@ -90,29 +87,6 @@ static struct acpi_driver acpi_battery_driver = {
}, },
}; };
struct acpi_battery_state {
acpi_integer state;
acpi_integer present_rate;
acpi_integer remaining_capacity;
acpi_integer present_voltage;
};
struct acpi_battery_info {
acpi_integer power_unit;
acpi_integer design_capacity;
acpi_integer last_full_capacity;
acpi_integer battery_technology;
acpi_integer design_voltage;
acpi_integer design_capacity_warning;
acpi_integer design_capacity_low;
acpi_integer battery_capacity_granularity_1;
acpi_integer battery_capacity_granularity_2;
acpi_string model_number;
acpi_string serial_number;
acpi_string battery_type;
acpi_string oem_info;
};
enum acpi_battery_files { enum acpi_battery_files {
ACPI_BATTERY_INFO = 0, ACPI_BATTERY_INFO = 0,
ACPI_BATTERY_STATE, ACPI_BATTERY_STATE,
@ -120,31 +94,42 @@ enum acpi_battery_files{
ACPI_BATTERY_NUMFILES, ACPI_BATTERY_NUMFILES,
}; };
struct acpi_battery_flags { struct acpi_battery {
u8 battery_present_prev; struct acpi_device *device;
struct mutex lock;
unsigned long alarm;
unsigned long update_time[ACPI_BATTERY_NUMFILES];
int state;
int present_rate;
int remaining_capacity;
int present_voltage;
int power_unit;
int design_capacity;
int last_full_capacity;
int technology;
int design_voltage;
int design_capacity_warning;
int design_capacity_low;
int capacity_granularity_1;
int capacity_granularity_2;
char model_number[32];
char serial_number[32];
char type[32];
char oem_info[32];
u8 present_prev;
u8 alarm_present; u8 alarm_present;
u8 init_update; u8 init_update;
u8 update[ACPI_BATTERY_NUMFILES]; u8 update[ACPI_BATTERY_NUMFILES];
u8 power_unit;
};
struct acpi_battery {
struct mutex mutex;
struct acpi_device *device;
struct acpi_battery_flags flags;
struct acpi_buffer bif_data;
struct acpi_buffer bst_data;
unsigned long alarm;
unsigned long update_time[ACPI_BATTERY_NUMFILES];
}; };
inline int acpi_battery_present(struct acpi_battery *battery) inline int acpi_battery_present(struct acpi_battery *battery)
{ {
return battery->device->status.battery_present; return battery->device->status.battery_present;
} }
inline char *acpi_battery_power_units(struct acpi_battery *battery) inline char *acpi_battery_power_units(struct acpi_battery *battery)
{ {
if (battery->flags.power_unit) if (battery->power_unit)
return ACPI_BATTERY_UNITS_AMPS; return ACPI_BATTERY_UNITS_AMPS;
else else
return ACPI_BATTERY_UNITS_WATTS; return ACPI_BATTERY_UNITS_WATTS;
@ -165,43 +150,63 @@ static void acpi_battery_check_result(struct acpi_battery *battery, int result)
return; return;
if (result) { if (result) {
battery->flags.init_update = 1; battery->init_update = 1;
} }
} }
static int acpi_battery_extract_package(struct acpi_battery *battery, struct acpi_offsets {
size_t offset; /* offset inside struct acpi_sbs_battery */
u8 mode; /* int or string? */
};
static struct acpi_offsets state_offsets[] = {
{offsetof(struct acpi_battery, state), 0},
{offsetof(struct acpi_battery, present_rate), 0},
{offsetof(struct acpi_battery, remaining_capacity), 0},
{offsetof(struct acpi_battery, present_voltage), 0},
};
static struct acpi_offsets info_offsets[] = {
{offsetof(struct acpi_battery, power_unit), 0},
{offsetof(struct acpi_battery, design_capacity), 0},
{offsetof(struct acpi_battery, last_full_capacity), 0},
{offsetof(struct acpi_battery, technology), 0},
{offsetof(struct acpi_battery, design_voltage), 0},
{offsetof(struct acpi_battery, design_capacity_warning), 0},
{offsetof(struct acpi_battery, design_capacity_low), 0},
{offsetof(struct acpi_battery, capacity_granularity_1), 0},
{offsetof(struct acpi_battery, capacity_granularity_2), 0},
{offsetof(struct acpi_battery, model_number), 1},
{offsetof(struct acpi_battery, serial_number), 1},
{offsetof(struct acpi_battery, type), 1},
{offsetof(struct acpi_battery, oem_info), 1},
};
static int extract_package(struct acpi_battery *battery,
union acpi_object *package, union acpi_object *package,
struct acpi_buffer *format, struct acpi_offsets *offsets, int num)
struct acpi_buffer *data,
char *package_name)
{ {
acpi_status status = AE_OK; int i, *x;
struct acpi_buffer data_null = { 0, NULL }; union acpi_object *element;
if (package->type != ACPI_TYPE_PACKAGE)
status = acpi_extract_package(package, format, &data_null); return -EFAULT;
if (status != AE_BUFFER_OVERFLOW) { for (i = 0; i < num; ++i) {
ACPI_EXCEPTION((AE_INFO, status, "Extracting size %s", if (package->package.count <= i)
package_name)); return -EFAULT;
return -ENODEV; element = &package->package.elements[i];
if (offsets[i].mode) {
if (element->type != ACPI_TYPE_STRING &&
element->type != ACPI_TYPE_BUFFER)
return -EFAULT;
strncpy((u8 *)battery + offsets[i].offset,
element->string.pointer, 32);
} else {
if (element->type != ACPI_TYPE_INTEGER)
return -EFAULT;
x = (int *)((u8 *)battery + offsets[i].offset);
*x = element->integer.value;
} }
if (data_null.length != data->length) {
kfree(data->pointer);
data->pointer = kzalloc(data_null.length, GFP_KERNEL);
if (!data->pointer) {
ACPI_EXCEPTION((AE_INFO, AE_NO_MEMORY, "kzalloc()"));
return -ENOMEM;
} }
data->length = data_null.length;
}
status = acpi_extract_package(package, format, data);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status, "Extracting %s",
package_name));
return -ENODEV;
}
return 0; return 0;
} }
@ -222,49 +227,21 @@ static int acpi_battery_get_info(struct acpi_battery *battery)
int result = 0; int result = 0;
acpi_status status = 0; acpi_status status = 0;
struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
struct acpi_buffer format = { sizeof(ACPI_BATTERY_FORMAT_BIF),
ACPI_BATTERY_FORMAT_BIF
};
union acpi_object *package = NULL;
struct acpi_buffer *data = NULL;
struct acpi_battery_info *bif = NULL;
battery->update_time[ACPI_BATTERY_INFO] = get_seconds(); battery->update_time[ACPI_BATTERY_INFO] = get_seconds();
if (!acpi_battery_present(battery)) if (!acpi_battery_present(battery))
return 0; return 0;
mutex_lock(&battery->lock);
/* Evaluate _BIF */ status = acpi_evaluate_object(acpi_battery_handle(battery), "_BIF",
NULL, &buffer);
status = mutex_unlock(&battery->lock);
acpi_evaluate_object(acpi_battery_handle(battery), "_BIF", NULL,
&buffer);
if (ACPI_FAILURE(status)) { if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status, "Evaluating _BIF")); ACPI_EXCEPTION((AE_INFO, status, "Evaluating _BIF"));
return -ENODEV; return -ENODEV;
} }
result = extract_package(battery, buffer.pointer,
package = buffer.pointer; info_offsets, ARRAY_SIZE(info_offsets));
data = &battery->bif_data;
/* Extract Package Data */
result =
acpi_battery_extract_package(battery, package, &format, data,
"_BIF");
if (result)
goto end;
end:
kfree(buffer.pointer); kfree(buffer.pointer);
if (!result) {
bif = data->pointer;
battery->flags.power_unit = bif->power_unit;
}
return result; return result;
} }
@ -273,42 +250,24 @@ static int acpi_battery_get_state(struct acpi_battery *battery)
int result = 0; int result = 0;
acpi_status status = 0; acpi_status status = 0;
struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
struct acpi_buffer format = { sizeof(ACPI_BATTERY_FORMAT_BST),
ACPI_BATTERY_FORMAT_BST
};
union acpi_object *package = NULL;
struct acpi_buffer *data = NULL;
battery->update_time[ACPI_BATTERY_STATE] = get_seconds(); battery->update_time[ACPI_BATTERY_STATE] = get_seconds();
if (!acpi_battery_present(battery)) if (!acpi_battery_present(battery))
return 0; return 0;
/* Evaluate _BST */ mutex_lock(&battery->lock);
status = acpi_evaluate_object(acpi_battery_handle(battery), "_BST",
NULL, &buffer);
mutex_unlock(&battery->lock);
status =
acpi_evaluate_object(acpi_battery_handle(battery), "_BST", NULL,
&buffer);
if (ACPI_FAILURE(status)) { if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status, "Evaluating _BST")); ACPI_EXCEPTION((AE_INFO, status, "Evaluating _BST"));
return -ENODEV; return -ENODEV;
} }
result = extract_package(battery, buffer.pointer,
package = buffer.pointer; state_offsets, ARRAY_SIZE(state_offsets));
data = &battery->bst_data;
/* Extract Package Data */
result =
acpi_battery_extract_package(battery, package, &format, data,
"_BST");
if (result)
goto end;
end:
kfree(buffer.pointer); kfree(buffer.pointer);
return result; return result;
} }
@ -331,14 +290,15 @@ static int acpi_battery_set_alarm(struct acpi_battery *battery,
if (!acpi_battery_present(battery)) if (!acpi_battery_present(battery))
return -ENODEV; return -ENODEV;
if (!battery->flags.alarm_present) if (!battery->alarm_present)
return -ENODEV; return -ENODEV;
arg0.integer.value = alarm; arg0.integer.value = alarm;
status = mutex_lock(&battery->lock);
acpi_evaluate_object(acpi_battery_handle(battery), "_BTP", status = acpi_evaluate_object(acpi_battery_handle(battery), "_BTP",
&arg_list, NULL); &arg_list, NULL);
mutex_unlock(&battery->lock);
if (ACPI_FAILURE(status)) if (ACPI_FAILURE(status))
return -ENODEV; return -ENODEV;
@ -354,22 +314,21 @@ static int acpi_battery_init_alarm(struct acpi_battery *battery)
int result = 0; int result = 0;
acpi_status status = AE_OK; acpi_status status = AE_OK;
acpi_handle handle = NULL; acpi_handle handle = NULL;
struct acpi_battery_info *bif = battery->bif_data.pointer;
unsigned long alarm = battery->alarm; unsigned long alarm = battery->alarm;
/* See if alarms are supported, and if so, set default */ /* See if alarms are supported, and if so, set default */
status = acpi_get_handle(acpi_battery_handle(battery), "_BTP", &handle); status = acpi_get_handle(acpi_battery_handle(battery), "_BTP", &handle);
if (ACPI_SUCCESS(status)) { if (ACPI_SUCCESS(status)) {
battery->flags.alarm_present = 1; battery->alarm_present = 1;
if (!alarm && bif) { if (!alarm) {
alarm = bif->design_capacity_warning; alarm = battery->design_capacity_warning;
} }
result = acpi_battery_set_alarm(battery, alarm); result = acpi_battery_set_alarm(battery, alarm);
if (result) if (result)
goto end; goto end;
} else { } else {
battery->flags.alarm_present = 0; battery->alarm_present = 0;
} }
end: end:
@ -385,7 +344,7 @@ static int acpi_battery_init_update(struct acpi_battery *battery)
if (result) if (result)
return result; return result;
battery->flags.battery_present_prev = acpi_battery_present(battery); battery->present_prev = acpi_battery_present(battery);
if (acpi_battery_present(battery)) { if (acpi_battery_present(battery)) {
result = acpi_battery_get_info(battery); result = acpi_battery_get_info(battery);
@ -411,7 +370,7 @@ static int acpi_battery_update(struct acpi_battery *battery,
update = 1; update = 1;
} }
if (battery->flags.init_update) { if (battery->init_update) {
result = acpi_battery_init_update(battery); result = acpi_battery_init_update(battery);
if (result) if (result)
goto end; goto end;
@ -420,8 +379,8 @@ static int acpi_battery_update(struct acpi_battery *battery,
result = acpi_battery_get_status(battery); result = acpi_battery_get_status(battery);
if (result) if (result)
goto end; goto end;
if ((!battery->flags.battery_present_prev & acpi_battery_present(battery)) if ((!battery->present_prev & acpi_battery_present(battery))
|| (battery->flags.battery_present_prev & !acpi_battery_present(battery))) { || (battery->present_prev & !acpi_battery_present(battery))) {
result = acpi_battery_init_update(battery); result = acpi_battery_init_update(battery);
if (result) if (result)
goto end; goto end;
@ -433,7 +392,7 @@ static int acpi_battery_update(struct acpi_battery *battery,
end: end:
battery->flags.init_update = (result != 0); battery->init_update = (result != 0);
*update_result_ptr = update_result; *update_result_ptr = update_result;
@ -444,19 +403,19 @@ static void acpi_battery_notify_update(struct acpi_battery *battery)
{ {
acpi_battery_get_status(battery); acpi_battery_get_status(battery);
if (battery->flags.init_update) { if (battery->init_update) {
return; return;
} }
if ((!battery->flags.battery_present_prev & if ((!battery->present_prev &
acpi_battery_present(battery)) || acpi_battery_present(battery)) ||
(battery->flags.battery_present_prev & (battery->present_prev &
!acpi_battery_present(battery))) { !acpi_battery_present(battery))) {
battery->flags.init_update = 1; battery->init_update = 1;
} else { } else {
battery->flags.update[ACPI_BATTERY_INFO] = 1; battery->update[ACPI_BATTERY_INFO] = 1;
battery->flags.update[ACPI_BATTERY_STATE] = 1; battery->update[ACPI_BATTERY_STATE] = 1;
battery->flags.update[ACPI_BATTERY_ALARM] = 1; battery->update[ACPI_BATTERY_ALARM] = 1;
} }
} }
@ -469,7 +428,6 @@ static struct proc_dir_entry *acpi_battery_dir;
static int acpi_battery_print_info(struct seq_file *seq, int result) static int acpi_battery_print_info(struct seq_file *seq, int result)
{ {
struct acpi_battery *battery = seq->private; struct acpi_battery *battery = seq->private;
struct acpi_battery_info *bif = NULL;
char *units = "?"; char *units = "?";
if (result) if (result)
@ -482,30 +440,23 @@ static int acpi_battery_print_info(struct seq_file *seq, int result)
goto end; goto end;
} }
bif = battery->bif_data.pointer;
if (!bif) {
ACPI_EXCEPTION((AE_INFO, AE_ERROR, "BIF buffer is NULL"));
result = -ENODEV;
goto end;
}
/* Battery Units */ /* Battery Units */
units = acpi_battery_power_units(battery); units = acpi_battery_power_units(battery);
if (bif->design_capacity == ACPI_BATTERY_VALUE_UNKNOWN) if (battery->design_capacity == ACPI_BATTERY_VALUE_UNKNOWN)
seq_printf(seq, "design capacity: unknown\n"); seq_printf(seq, "design capacity: unknown\n");
else else
seq_printf(seq, "design capacity: %d %sh\n", seq_printf(seq, "design capacity: %d %sh\n",
(u32) bif->design_capacity, units); (u32) battery->design_capacity, units);
if (bif->last_full_capacity == ACPI_BATTERY_VALUE_UNKNOWN) if (battery->last_full_capacity == ACPI_BATTERY_VALUE_UNKNOWN)
seq_printf(seq, "last full capacity: unknown\n"); seq_printf(seq, "last full capacity: unknown\n");
else else
seq_printf(seq, "last full capacity: %d %sh\n", seq_printf(seq, "last full capacity: %d %sh\n",
(u32) bif->last_full_capacity, units); (u32) battery->last_full_capacity, units);
switch ((u32) bif->battery_technology) { switch ((u32) battery->technology) {
case 0: case 0:
seq_printf(seq, "battery technology: non-rechargeable\n"); seq_printf(seq, "battery technology: non-rechargeable\n");
break; break;
@ -517,23 +468,23 @@ static int acpi_battery_print_info(struct seq_file *seq, int result)
break; break;
} }
if (bif->design_voltage == ACPI_BATTERY_VALUE_UNKNOWN) if (battery->design_voltage == ACPI_BATTERY_VALUE_UNKNOWN)
seq_printf(seq, "design voltage: unknown\n"); seq_printf(seq, "design voltage: unknown\n");
else else
seq_printf(seq, "design voltage: %d mV\n", seq_printf(seq, "design voltage: %d mV\n",
(u32) bif->design_voltage); (u32) battery->design_voltage);
seq_printf(seq, "design capacity warning: %d %sh\n", seq_printf(seq, "design capacity warning: %d %sh\n",
(u32) bif->design_capacity_warning, units); (u32) battery->design_capacity_warning, units);
seq_printf(seq, "design capacity low: %d %sh\n", seq_printf(seq, "design capacity low: %d %sh\n",
(u32) bif->design_capacity_low, units); (u32) battery->design_capacity_low, units);
seq_printf(seq, "capacity granularity 1: %d %sh\n", seq_printf(seq, "capacity granularity 1: %d %sh\n",
(u32) bif->battery_capacity_granularity_1, units); (u32) battery->capacity_granularity_1, units);
seq_printf(seq, "capacity granularity 2: %d %sh\n", seq_printf(seq, "capacity granularity 2: %d %sh\n",
(u32) bif->battery_capacity_granularity_2, units); (u32) battery->capacity_granularity_2, units);
seq_printf(seq, "model number: %s\n", bif->model_number); seq_printf(seq, "model number: %s\n", battery->model_number);
seq_printf(seq, "serial number: %s\n", bif->serial_number); seq_printf(seq, "serial number: %s\n", battery->serial_number);
seq_printf(seq, "battery type: %s\n", bif->battery_type); seq_printf(seq, "battery type: %s\n", battery->type);
seq_printf(seq, "OEM info: %s\n", bif->oem_info); seq_printf(seq, "OEM info: %s\n", battery->oem_info);
end: end:
@ -546,7 +497,6 @@ static int acpi_battery_print_info(struct seq_file *seq, int result)
static int acpi_battery_print_state(struct seq_file *seq, int result) static int acpi_battery_print_state(struct seq_file *seq, int result)
{ {
struct acpi_battery *battery = seq->private; struct acpi_battery *battery = seq->private;
struct acpi_battery_state *bst = NULL;
char *units = "?"; char *units = "?";
if (result) if (result)
@ -559,50 +509,43 @@ static int acpi_battery_print_state(struct seq_file *seq, int result)
goto end; goto end;
} }
bst = battery->bst_data.pointer;
if (!bst) {
ACPI_EXCEPTION((AE_INFO, AE_ERROR, "BST buffer is NULL"));
result = -ENODEV;
goto end;
}
/* Battery Units */ /* Battery Units */
units = acpi_battery_power_units(battery); units = acpi_battery_power_units(battery);
if (!(bst->state & 0x04)) if (!(battery->state & 0x04))
seq_printf(seq, "capacity state: ok\n"); seq_printf(seq, "capacity state: ok\n");
else else
seq_printf(seq, "capacity state: critical\n"); seq_printf(seq, "capacity state: critical\n");
if ((bst->state & 0x01) && (bst->state & 0x02)) { if ((battery->state & 0x01) && (battery->state & 0x02)) {
seq_printf(seq, seq_printf(seq,
"charging state: charging/discharging\n"); "charging state: charging/discharging\n");
} else if (bst->state & 0x01) } else if (battery->state & 0x01)
seq_printf(seq, "charging state: discharging\n"); seq_printf(seq, "charging state: discharging\n");
else if (bst->state & 0x02) else if (battery->state & 0x02)
seq_printf(seq, "charging state: charging\n"); seq_printf(seq, "charging state: charging\n");
else { else {
seq_printf(seq, "charging state: charged\n"); seq_printf(seq, "charging state: charged\n");
} }
if (bst->present_rate == ACPI_BATTERY_VALUE_UNKNOWN) if (battery->present_rate == ACPI_BATTERY_VALUE_UNKNOWN)
seq_printf(seq, "present rate: unknown\n"); seq_printf(seq, "present rate: unknown\n");
else else
seq_printf(seq, "present rate: %d %s\n", seq_printf(seq, "present rate: %d %s\n",
(u32) bst->present_rate, units); (u32) battery->present_rate, units);
if (bst->remaining_capacity == ACPI_BATTERY_VALUE_UNKNOWN) if (battery->remaining_capacity == ACPI_BATTERY_VALUE_UNKNOWN)
seq_printf(seq, "remaining capacity: unknown\n"); seq_printf(seq, "remaining capacity: unknown\n");
else else
seq_printf(seq, "remaining capacity: %d %sh\n", seq_printf(seq, "remaining capacity: %d %sh\n",
(u32) bst->remaining_capacity, units); (u32) battery->remaining_capacity, units);
if (bst->present_voltage == ACPI_BATTERY_VALUE_UNKNOWN) if (battery->present_voltage == ACPI_BATTERY_VALUE_UNKNOWN)
seq_printf(seq, "present voltage: unknown\n"); seq_printf(seq, "present voltage: unknown\n");
else else
seq_printf(seq, "present voltage: %d mV\n", seq_printf(seq, "present voltage: %d mV\n",
(u32) bst->present_voltage); (u32) battery->present_voltage);
end: end:
@ -658,8 +601,6 @@ acpi_battery_write_alarm(struct file *file,
if (!battery || (count > sizeof(alarm_string) - 1)) if (!battery || (count > sizeof(alarm_string) - 1))
return -EINVAL; return -EINVAL;
mutex_lock(&battery->mutex);
result = acpi_battery_update(battery, 1, &update_result); result = acpi_battery_update(battery, 1, &update_result);
if (result) { if (result) {
result = -ENODEV; result = -ENODEV;
@ -689,9 +630,6 @@ acpi_battery_write_alarm(struct file *file,
if (!result) if (!result)
result = count; result = count;
mutex_unlock(&battery->mutex);
return result; return result;
} }
@ -714,10 +652,8 @@ static int acpi_battery_read(int fid, struct seq_file *seq)
int update_result = ACPI_BATTERY_NONE_UPDATE; int update_result = ACPI_BATTERY_NONE_UPDATE;
int update = 0; int update = 0;
mutex_lock(&battery->mutex);
update = (get_seconds() - battery->update_time[fid] >= update_time); update = (get_seconds() - battery->update_time[fid] >= update_time);
update = (update | battery->flags.update[fid]); update = (update | battery->update[fid]);
result = acpi_battery_update(battery, update, &update_result); result = acpi_battery_update(battery, update, &update_result);
if (result) if (result)
@ -732,8 +668,7 @@ static int acpi_battery_read(int fid, struct seq_file *seq)
end: end:
result = acpi_read_funcs[fid].print(seq, result); result = acpi_read_funcs[fid].print(seq, result);
acpi_battery_check_result(battery, result); acpi_battery_check_result(battery, result);
battery->flags.update[fid] = result; battery->update[fid] = result;
mutex_unlock(&battery->mutex);
return result; return result;
} }
@ -900,20 +835,16 @@ static int acpi_battery_add(struct acpi_device *device)
if (!battery) if (!battery)
return -ENOMEM; return -ENOMEM;
mutex_init(&battery->mutex);
mutex_lock(&battery->mutex);
battery->device = device; battery->device = device;
strcpy(acpi_device_name(device), ACPI_BATTERY_DEVICE_NAME); strcpy(acpi_device_name(device), ACPI_BATTERY_DEVICE_NAME);
strcpy(acpi_device_class(device), ACPI_BATTERY_CLASS); strcpy(acpi_device_class(device), ACPI_BATTERY_CLASS);
acpi_driver_data(device) = battery; acpi_driver_data(device) = battery;
mutex_init(&battery->lock);
result = acpi_battery_get_status(battery); result = acpi_battery_get_status(battery);
if (result) if (result)
goto end; goto end;
battery->flags.init_update = 1; battery->init_update = 1;
result = acpi_battery_add_fs(device); result = acpi_battery_add_fs(device);
if (result) if (result)
@ -939,8 +870,6 @@ static int acpi_battery_add(struct acpi_device *device)
kfree(battery); kfree(battery);
} }
mutex_unlock(&battery->mutex);
return result; return result;
} }
@ -954,22 +883,12 @@ static int acpi_battery_remove(struct acpi_device *device, int type)
battery = acpi_driver_data(device); battery = acpi_driver_data(device);
mutex_lock(&battery->mutex);
status = acpi_remove_notify_handler(device->handle, status = acpi_remove_notify_handler(device->handle,
ACPI_ALL_NOTIFY, ACPI_ALL_NOTIFY,
acpi_battery_notify); acpi_battery_notify);
acpi_battery_remove_fs(device); acpi_battery_remove_fs(device);
mutex_destroy(&battery->lock);
kfree(battery->bif_data.pointer);
kfree(battery->bst_data.pointer);
mutex_unlock(&battery->mutex);
mutex_destroy(&battery->mutex);
kfree(battery); kfree(battery);
return 0; return 0;
@ -985,7 +904,7 @@ static int acpi_battery_resume(struct acpi_device *device)
battery = device->driver_data; battery = device->driver_data;
battery->flags.init_update = 1; battery->init_update = 1;
return 0; return 0;
} }